Files
goodbuddy/src/main/agent/knowledge-mcp-gateway.ts
T
mesalogo 17186b0c11 feat: add file-backed canvas notes
Magic Notes previously supported rich-text records without a paged drawing or
PDF annotation workflow. Add the integrated PeopleLib Fabric and Quill editor
with flowing text, pen/highlighter, object transforms, images, paper templates,
PDF backgrounds with native text extraction, and raster PDF export. Saves are
manual; undo/redo remains scoped to an annotation page or Quill mode.

Analyze drafts, saved canvases and canvas-source todos with page images and
text when the default model supports images, or an explicitly labelled
text-only fallback. Keep successful saves when automatic analysis fails and
prevent MCP plain-text replacement of canvas records.

Move entry bodies and binary assets into local note files with schema 38
migration and verified readback. SQLite retains metadata, indexes, revisions,
todos and comments. Backups must coordinate SQLite and the adjacent notes
directory while writes are paused or the app is closed; no one-click backup
action is included.

Show a continuous record stream with independent collapsible record index and
AI pane, real first-page thumbnails, and scroll-only record navigation. Open a
blank text/canvas composer by default and reset it after creation. Protect
unsaved drafts and establish normalized editor baselines after saving so clean
records do not prompt again when leaving.

Validation: latest recorded focused run passed 149 tests across five files;
typecheck, lint and git diff --check passed. The prior user-reported full run
passed 4,713 tests before later corrections and UI changes; it is not a full
validation of this final snapshot. Tests were not rerun for this commit, as
requested; independent systematic review follows the commit.

Release note: Create paged notes with handwriting, flowing text and PDF
annotations, browse records through thumbnails, and request AI comments with
an explicit text-only fallback. Existing notes migrate to local file storage;
backups now need both the database and notes directory.
2026-09-19 11:54:23 +08:00

1927 lines
59 KiB
TypeScript

import { randomBytes } from 'node:crypto'
import { knowledgeReferenceKey, toKnowledgeReference } from '../../shared/knowledge-reference'
import {
createServer,
type IncomingMessage,
type Server,
type ServerResponse
} from 'node:http'
import { Client } from '@modelcontextprotocol/sdk/client/index.js'
import { Server as McpProtocolServer } from '@modelcontextprotocol/sdk/server/index.js'
import { StreamableHTTPServerTransport } from '@modelcontextprotocol/sdk/server/streamableHttp.js'
import type { JsonSchemaValidator } from '@modelcontextprotocol/sdk/validation'
import { AjvJsonSchemaValidator } from '@modelcontextprotocol/sdk/validation/ajv'
import {
CallToolRequestSchema,
CallToolResultSchema,
ListToolsRequestSchema,
isInitializeRequest,
type CallToolResult,
type Tool
} from '@modelcontextprotocol/sdk/types.js'
import { z } from 'zod'
import type {
BrowserTabId,
BrowserTabSummary,
KnowledgeSearchReference
} from '../../shared/contracts'
import {
knowledgeToolNames,
knowledgeScopedDataToolCatalog,
goodbuddyConfigReadToolNames,
goodbuddyConfigWriteToolNames,
magicNoteScopedDataToolCatalog,
magicNoteReadToolNames,
magicNoteWriteToolNames,
maximumScopedToolCount,
scopedDataToolByName,
scopedReadToolNames,
type GoodBuddyConfigToolName,
type ScopedDataToolName
} from '../../shared/scoped-data-tools'
import type { KnowledgeService } from '../knowledge/knowledge-service'
import type {
MagicNoteDetail,
MagicNoteEntry,
MagicNoteRichContent,
MagicNoteContent,
MagicNoteSearchResult,
MagicNoteSummary
} from '../../shared/magic-notes-contracts'
import {
magicNotePlainText,
validateMagicNoteRichContent
} from '../magic-notes/rich-content'
import type {
GoodBuddyConfigApplyAuthorizer,
GoodBuddyConfigService
} from '../goodbuddy-config-service'
import {
createMcpTransport
} from '../capabilities/mcp-client-transport'
import type {
ResolvedMcpServer
} from '../capabilities/capability-service'
import {
createMcpToolName,
isValidMcpToolName,
listAllMcpTools,
normalizeMcpToolSchema
} from './mcp-tool-utils'
import type { LaunchEnvironmentProvider } from '../local-tool-environment'
import {
BrowserModelTools,
browserNavigateInputSchema,
browserToolNames,
type BrowserToolName,
type BrowserToolService
} from '../browser/browser-model-tools'
import type { BrowserService, BrowserTabUsageLease } from '../browser/browser-service'
import { BrowserStaleReferenceError } from '../browser/cdp-browser-driver'
import { safeToolErrorDetail } from './approval-summary'
const MAX_REQUEST_BODY_BYTES = 64 * 1024
const MAX_RESULT_BYTES = 128 * 1024
const MAX_CUSTOM_MCP_RESULT_BYTES = 256 * 1024
const MAX_CUSTOM_MCP_SERVERS = 16
const MAX_CUSTOM_MCP_TOOLS = 100
const MAX_DOWNSTREAM_MCP_SESSIONS_PER_CAPABILITY = 8
const CUSTOM_MCP_TIMEOUT_MS = 30_000
const CUSTOM_MCP_MAX_TOTAL_TIMEOUT_MS = 5 * 60_000
const CUSTOM_MCP_TASK_CANCEL_TIMEOUT_MS = 5_000
const DEFAULT_CAPABILITY_TTL_MS = 10 * 60_000
const MAX_CAPABILITY_TTL_MS = 15 * 60_000
const customMcpJsonSchemaValidator = new AjvJsonSchemaValidator()
export {
browserToolNames,
knowledgeToolNames,
magicNoteReadToolNames,
magicNoteWriteToolNames,
maximumScopedToolCount,
scopedReadToolNames
}
export type GoodBuddyBuiltinToolName =
| 'generate_image'
| ScopedDataToolName
| BrowserToolName
const {
knowledge_list: knowledgeListTool,
knowledge_search: knowledgeSearchTool
} = knowledgeScopedDataToolCatalog
const {
note_list: magicNoteListTool,
note_get: magicNoteGetTool,
note_search: magicNoteSearchTool,
note_create: magicNoteCreateTool,
note_update: magicNoteUpdateTool,
note_entry_create: magicNoteEntryCreateTool,
note_entry_update: magicNoteEntryUpdateTool,
note_entry_delete: magicNoteEntryDeleteTool,
note_delete: magicNoteDeleteTool
} = magicNoteScopedDataToolCatalog
export type MagicNotesDatabase = {
listMagicNotes(): MagicNoteSummary[]
getMagicNote(noteId: string): MagicNoteDetail
getMagicNoteEntry(entryId: string): MagicNoteEntry
searchMagicNotes(query: string, limit: number): MagicNoteSearchResult[]
createMagicNote(input: {
title: string
content?: MagicNoteContent
}): MagicNoteDetail
updateMagicNote(input: {
noteId: string
title?: string
pinned?: boolean
expectedRevision: number
}): MagicNoteDetail
deleteMagicNote(noteId: string): void
createMagicNoteEntry(input: {
noteId: string
content: MagicNoteContent
plainText: string
}): MagicNoteDetail
updateMagicNoteEntry(input: {
entryId: string
content: MagicNoteContent
plainText: string
expectedRevision: number
}): MagicNoteDetail
deleteMagicNoteEntry(entryId: string): MagicNoteDetail
}
export type MagicNotesCapabilityAccess = 'none' | 'read' | 'write'
export type MagicNoteToolSummary = {
id: string
title: string
preview: string
entryCount: number
pinned: boolean
revision: number
createdAt: string
updatedAt: string
}
export type MagicNoteToolEntry = {
id: string
content: string
contentKind: 'rich-text' | 'paged-canvas'
contentVersion: 1 | 2
plainTextEditable: boolean
revision: number
createdAt: string
updatedAt: string
}
export type MagicNoteToolDetail = MagicNoteToolSummary & {
entries: MagicNoteToolEntry[]
truncated: boolean
}
export type KnowledgeLibraryListItem = {
id: string
name: string
description?: string
}
type Capability = {
imageToolBinding?: ImageToolBinding
requestId: string
libraryIds: readonly string[]
magicNotesAccess: MagicNotesCapabilityAccess
configAccess: MagicNotesCapabilityAccess
configWorkspacePath?: string
authorizeConfigApply?: GoodBuddyConfigApplyAuthorizer
browserConversationId?: string
browserTabId?: BrowserTabId
browserUsageLease?: BrowserTabUsageLease
expiresAt: number
signal: AbortSignal
brokerController: AbortController
customMcpServers: readonly ResolvedMcpServer[]
customMcpConnections?: Promise<CustomMcpConnection[]>
references: Map<string, KnowledgeSearchReference>
removeAbortListener: () => void
}
type CustomMcpBinding = {
client: Client
server: ResolvedMcpServer
originalName: string
exposedTool: Tool
taskSupport?: 'forbidden' | 'optional' | 'required'
outputValidator?: JsonSchemaValidator<Record<string, unknown>>
}
type CustomMcpConnection = {
client: Client
server: ResolvedMcpServer
bindings: CustomMcpBinding[]
dynamicToolsSupported: boolean
dynamicToolsChanged: boolean
dynamicToolsChangeVersion: number
dynamicToolsRefresh?: Promise<void>
}
type DownstreamMcpSession = {
id?: string
registryKey: string
token: string
mcp: McpProtocolServer
transport: StreamableHTTPServerTransport
initialized: boolean
listedTools: boolean
closing?: Promise<void>
}
export type KnowledgeMcpGatewayOptions = {
capabilityTtlMs?: number
maximumBodyBytes?: number
now?: () => number
magicNotesDatabase?: MagicNotesDatabase
configService?: GoodBuddyConfigService
browserService?: BrowserToolService & {
createTab: BrowserService['createTab']
listTabs(conversationId: string): BrowserTabSummary[]
acquireTabUsage(
conversationId: string,
tabId: BrowserTabId,
owner: string
): BrowserTabUsageLease
}
launchEnvironmentProvider?: LaunchEnvironmentProvider
}
function toMagicNoteToolSummary(
note: MagicNoteSummary
): MagicNoteToolSummary {
return {
id: note.id,
title: note.title.slice(0, 100),
preview: note.preview.slice(0, 500),
entryCount: note.entryCount,
pinned: note.pinned,
revision: note.revision,
createdAt: note.createdAt,
updatedAt: note.updatedAt
}
}
function textContent(value: string): MagicNoteRichContent {
return validateMagicNoteRichContent({
version: 1,
ops: [{ insert: value.endsWith('\n') ? value : `${value}\n` }]
})
}
function referenceKey(reference: KnowledgeSearchReference): string {
return knowledgeReferenceKey(reference)
}
function ensureBoundedCustomMcpResult(result: unknown): CallToolResult {
const normalized =
result &&
typeof result === 'object' &&
'toolResult' in result
? {
content: [
{
type: 'text' as const,
text: JSON.stringify(
(result as { toolResult: unknown }).toolResult
)
}
]
}
: result
const parsed = CallToolResultSchema.parse(normalized)
let serialized: string
try {
serialized = JSON.stringify(parsed)
} catch (error) {
throw new Error('MCP 工具结果无法序列化', { cause: error })
}
if (
!serialized ||
Buffer.byteLength(serialized) > MAX_CUSTOM_MCP_RESULT_BYTES
) {
throw new Error('MCP 工具结果超过 256KB 安全限制')
}
return parsed
}
function sendJson(
response: ServerResponse,
status: number,
value: unknown
): void {
if (response.headersSent) {
response.end()
return
}
const body = JSON.stringify(value)
response.writeHead(status, {
'content-type': 'application/json',
'content-length': Buffer.byteLength(body)
})
response.end(body)
}
async function readBoundedJson(
request: IncomingMessage,
maximumBytes: number
): Promise<unknown> {
const declaredLength = Number(request.headers['content-length'])
if (
Number.isFinite(declaredLength) &&
declaredLength > maximumBytes
) {
throw new RangeError('request body too large')
}
const chunks: Buffer[] = []
let total = 0
for await (const chunk of request) {
const buffer = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)
total += buffer.length
if (total > maximumBytes) {
throw new RangeError('request body too large')
}
chunks.push(buffer)
}
try {
return JSON.parse(Buffer.concat(chunks).toString('utf8'))
} catch (error) {
throw new SyntaxError('invalid JSON', { cause: error })
}
}
export class KnowledgeMcpGateway {
private readonly capabilities = new Map<string, Capability>()
private readonly downstreamMcpSessions = new Map<
string,
DownstreamMcpSession
>()
private readonly downstreamMcpCleanups = new Set<Promise<void>>()
private readonly customMcpCleanups = new Set<Promise<void>>()
private readonly now: () => number
private readonly capabilityTtlMs: number
private readonly maximumBodyBytes: number
private readonly magicNotesDatabase?: MagicNotesDatabase
private readonly configService?: GoodBuddyConfigService
private readonly browserService?: BrowserToolService & {
createTab: BrowserService['createTab']
listTabs(conversationId: string): BrowserTabSummary[]
acquireTabUsage(
conversationId: string,
tabId: BrowserTabId,
owner: string
): BrowserTabUsageLease
}
private readonly launchEnvironmentProvider?: LaunchEnvironmentProvider
private server?: Server
private endpoint?: string
constructor(
private readonly knowledgeService: KnowledgeService,
options: KnowledgeMcpGatewayOptions = {}
) {
const ttl = options.capabilityTtlMs ?? DEFAULT_CAPABILITY_TTL_MS
if (
!Number.isSafeInteger(ttl) ||
ttl < 1 ||
ttl > MAX_CAPABILITY_TTL_MS
) {
throw new RangeError('Knowledge capability TTL is invalid')
}
this.capabilityTtlMs = ttl
this.maximumBodyBytes =
options.maximumBodyBytes ?? MAX_REQUEST_BODY_BYTES
this.now = options.now ?? Date.now
this.magicNotesDatabase = options.magicNotesDatabase
this.configService = options.configService
this.browserService = options.browserService
this.launchEnvironmentProvider = options.launchEnvironmentProvider
}
async start(): Promise<void> {
if (this.server) {
return
}
const server = createServer((request, response) => {
void this.handleRequest(request, response).catch(() => {
sendJson(response, 500, {
jsonrpc: '2.0',
error: { code: -32603, message: 'Internal server error' },
id: null
})
})
})
await new Promise<void>((resolve, reject) => {
const onError = (error: Error): void => {
server.off('listening', onListening)
reject(error)
}
const onListening = (): void => {
server.off('error', onError)
resolve()
}
server.once('error', onError)
server.once('listening', onListening)
server.listen(0, '127.0.0.1')
})
const address = server.address()
if (!address || typeof address === 'string') {
await new Promise<void>((resolve) => server.close(() => resolve()))
throw new Error('Knowledge MCP gateway did not bind a TCP port')
}
this.server = server
this.endpoint = `http://127.0.0.1:${address.port}/mcp`
}
getEndpoint(): string | undefined {
return this.endpoint
}
grant(
requestId: string,
authorizedLibraryIds: readonly string[],
signal: AbortSignal,
magicNotesAccess: MagicNotesCapabilityAccess = 'none',
config?: {
access: MagicNotesCapabilityAccess
workspacePath: string
authorizeApply?: GoodBuddyConfigApplyAuthorizer
},
browserConversationId?: string,
browserTabId?: BrowserTabId,
browserUsageLease?: BrowserTabUsageLease
): string | undefined {
const effectiveMagicNotesAccess = this.magicNotesDatabase
? magicNotesAccess
: 'none'
const effectiveConfigAccess = this.configService
? config?.access ?? 'none'
: 'none'
const effectiveBrowserConversationId = this.browserService
? browserConversationId
: undefined
const effectiveBrowserTabId = effectiveBrowserConversationId
? browserTabId
: undefined
if (
effectiveBrowserConversationId &&
(!effectiveBrowserTabId ||
(!browserUsageLease && !this.browserService!
.listTabs(effectiveBrowserConversationId)
.some((tab) => tab.tabId === effectiveBrowserTabId)))
) {
throw new Error('浏览器标签页不存在或不属于当前对话')
}
let effectiveBrowserUsageLease: BrowserTabUsageLease | undefined
if (effectiveBrowserConversationId && effectiveBrowserTabId) {
effectiveBrowserUsageLease = browserUsageLease ??
this.browserService!.acquireTabUsage(
effectiveBrowserConversationId,
effectiveBrowserTabId,
requestId
)
if (
effectiveBrowserUsageLease.conversationId !==
effectiveBrowserConversationId ||
effectiveBrowserUsageLease.tabId !== effectiveBrowserTabId ||
effectiveBrowserUsageLease.owner !== requestId
) {
effectiveBrowserUsageLease.release()
throw new Error('浏览器标签页使用租约与当前请求不匹配')
}
} else if (browserUsageLease) {
browserUsageLease.release()
throw new Error('浏览器标签页使用租约与当前请求不匹配')
}
if (
authorizedLibraryIds.length === 0 &&
effectiveMagicNotesAccess === 'none' &&
effectiveConfigAccess === 'none' &&
!effectiveBrowserConversationId
) {
return undefined
}
try {
signal.throwIfAborted()
effectiveBrowserUsageLease?.signal.throwIfAborted()
return this.storeCapability({
requestId,
libraryIds: Object.freeze([...new Set(authorizedLibraryIds)]),
magicNotesAccess: effectiveMagicNotesAccess,
configAccess: effectiveConfigAccess,
browserConversationId: effectiveBrowserConversationId,
browserTabId: effectiveBrowserTabId,
browserUsageLease: effectiveBrowserUsageLease,
...(effectiveConfigAccess !== 'none'
? {
configWorkspacePath: config?.workspacePath,
authorizeConfigApply: config?.authorizeApply
}
: {}),
signal,
customMcpServers: []
})
} catch (error) {
effectiveBrowserUsageLease?.release()
throw error
}
}
bindImageTool(binding: ImageToolBinding, signal: AbortSignal, existingToken?: string): string {
signal.throwIfAborted()
if (existingToken) {
const capability = this.getCapability(existingToken)
if (capability.requestId !== binding.context.requestId) throw new Error('Image capability request does not match')
capability.imageToolBinding = binding
return existingToken
}
return this.storeCapability({
requestId: binding.context.requestId, libraryIds: [], magicNotesAccess: 'none', configAccess: 'none',
customMcpServers: [], signal, imageToolBinding: binding
})
}
grantCustomMcp(
requestId: string,
servers: readonly ResolvedMcpServer[],
signal: AbortSignal
): string | undefined {
if (servers.length === 0) {
return undefined
}
if (servers.length > MAX_CUSTOM_MCP_SERVERS) {
throw new Error(
`Agent Runtime 最多可加载 ${MAX_CUSTOM_MCP_SERVERS} 个 MCP Server`
)
}
if (
servers.some(
(server) =>
!server.enabled ||
server.assignments.length === 0
)
) {
throw new Error('Agent Runtime MCP 授权包含无效 Server')
}
return this.storeCapability({
requestId,
libraryIds: [],
magicNotesAccess: 'none',
configAccess: 'none',
signal,
customMcpServers: Object.freeze([...servers])
})
}
private storeCapability(
value: Omit<
Capability,
| 'expiresAt'
| 'references'
| 'removeAbortListener'
| 'brokerController'
| 'customMcpConnections'
>
): string {
value.signal.throwIfAborted()
const token = randomBytes(32).toString('base64url')
const brokerController = new AbortController()
const abort = (): void => {
this.revoke(token)
}
value.signal.addEventListener('abort', abort, { once: true })
this.capabilities.set(token, {
...value,
expiresAt: this.now() + this.capabilityTtlMs,
brokerController,
references: new Map(),
removeAbortListener: () => {
value.signal.removeEventListener('abort', abort)
}
})
return token
}
revoke(token: string | undefined): void {
if (!token) {
return
}
const capability = this.capabilities.get(token)
if (!capability) {
return
}
capability.removeAbortListener()
this.capabilities.delete(token)
capability.brokerController.abort(
new Error('MCP capability was revoked')
)
capability.browserUsageLease?.release()
for (const session of this.downstreamMcpSessions.values()) {
if (session.token === token) {
void this.closeDownstreamMcpSession(session)
}
}
if (capability.configAccess !== 'none') {
this.configService?.revokeRequest(capability.requestId)
}
const cleanup = this.closeCustomMcpConnections(capability)
this.customMcpCleanups.add(cleanup)
void cleanup.finally(() => {
this.customMcpCleanups.delete(cleanup)
})
}
private closeDownstreamMcpSession(
session: DownstreamMcpSession
): Promise<void> {
if (session.closing) {
return session.closing
}
this.downstreamMcpSessions.delete(session.registryKey)
const cleanup = session.mcp
.close()
.catch(() => undefined)
.finally(() => {
this.downstreamMcpCleanups.delete(cleanup)
})
session.closing = cleanup
this.downstreamMcpCleanups.add(cleanup)
return cleanup
}
drainReferences(
token: string | undefined
): KnowledgeSearchReference[] {
if (!token) {
return []
}
const capability = this.capabilities.get(token)
if (!capability) {
return []
}
const references = [...capability.references.values()]
capability.references.clear()
return references
}
private getCapability(token: string): Capability {
const capability = this.capabilities.get(token)
if (
!capability ||
capability.signal.aborted ||
capability.expiresAt <= this.now()
) {
this.revoke(token)
throw new Error('Knowledge capability is unavailable or expired')
}
return capability
}
async search(
token: string,
input: unknown,
signal?: AbortSignal
): Promise<KnowledgeSearchReference[]> {
const capability = this.getCapability(token)
const { query, limit } = knowledgeSearchTool.inputSchema.parse(
input
)
const effectiveSignal = AbortSignal.any([capability.signal, capability.brokerController.signal, ...(signal ? [signal] : [])])
effectiveSignal.throwIfAborted()
const libraries = this.knowledgeService.database.listKnowledgeBases(500)
const libraryNames = new Map(
libraries.map((library) => [library.id, library.name])
)
const outcomes = await this.knowledgeService.retrieveMany(
capability.libraryIds,
query,
effectiveSignal
)
effectiveSignal.throwIfAborted()
const warnings = outcomes.flatMap(item => item.response.diagnostics.failure ? [item.response.diagnostics.failure] : [])
if (outcomes.length && warnings.length === outcomes.length) throw new Error(warnings.join('; '))
const results = outcomes.flatMap(item => item.response.results.map(result => ({ knowledgeBaseId: item.knowledgeBaseId, result })))
if (!results.length && warnings.length) throw new Error(warnings.join('; '))
const references: KnowledgeSearchReference[] = []
const seen = new Set<string>()
for (const { knowledgeBaseId, result } of results.sort(
(left, right) => left.result.rank - right.result.rank
)) {
if (references.length >= limit) {
break
}
const reference: KnowledgeSearchReference = {
...toKnowledgeReference(result, libraryNames.get(knowledgeBaseId) ?? '知识库'),
...(warnings.length ? { warnings } : {})
}
const key = referenceKey(reference)
if (seen.has(key)) {
continue
}
seen.add(key)
const candidate = [...references, reference]
if (
Buffer.byteLength(JSON.stringify({ references: candidate })) >
MAX_RESULT_BYTES
) {
break
}
references.push(reference)
capability.references.set(key, reference)
}
return references
}
listLibraries(
token: string,
input: unknown = {}
): KnowledgeLibraryListItem[] {
const capability = this.getCapability(token)
knowledgeListTool.inputSchema.parse(input)
const librariesById = new Map(
this.knowledgeService.database
.listKnowledgeBases(500)
.map((library) => [library.id, library])
)
const libraries: KnowledgeLibraryListItem[] = []
for (const libraryId of capability.libraryIds) {
const library = librariesById.get(libraryId)
if (!library) {
continue
}
const item: KnowledgeLibraryListItem = {
id: library.id,
name: library.name.slice(0, 500),
...(library.description
? { description: library.description.slice(0, 4_000) }
: {})
}
const candidate = [...libraries, item]
if (
Buffer.byteLength(JSON.stringify({ libraries: candidate })) >
MAX_RESULT_BYTES
) {
break
}
libraries.push(item)
}
return libraries
}
getAvailableToolNames(token: string): GoodBuddyBuiltinToolName[] {
const capability = this.getCapability(token)
return [
...(capability.imageToolBinding ? ['generate_image' as const] : []),
...(capability.libraryIds.length > 0
? knowledgeToolNames
: []),
...(capability.magicNotesAccess !== 'none'
? magicNoteReadToolNames
: []),
...(capability.magicNotesAccess === 'write'
? magicNoteWriteToolNames
: []),
...(capability.configAccess !== 'none'
? goodbuddyConfigReadToolNames
: []),
...(capability.configAccess === 'write'
? goodbuddyConfigWriteToolNames
: []),
...(capability.browserConversationId && capability.browserTabId
? browserToolNames
: [])
]
}
private createCustomMcpBindings(
client: Client,
server: ResolvedMcpServer,
tools: Awaited<ReturnType<Client['listTools']>>['tools']
): CustomMcpBinding[] {
if (tools.length > MAX_CUSTOM_MCP_TOOLS) {
throw new Error(
`MCP Server「${server.name}」提供的工具数量超过安全限制`
)
}
return tools.map((tool) => {
if (!isValidMcpToolName(tool.name)) {
throw new Error(
`MCP Server「${server.name}」返回了无效工具名称`
)
}
return {
client,
server,
originalName: tool.name,
taskSupport: tool.execution?.taskSupport,
outputValidator: tool.outputSchema
? customMcpJsonSchemaValidator.getValidator<
Record<string, unknown>
>(normalizeMcpToolSchema(tool.outputSchema))
: undefined,
exposedTool: {
name: createMcpToolName(server.id, tool.name),
title: `${server.name} / ${tool.name}`.slice(0, 200),
description: [
`GoodBuddy 代理的自定义 MCP Server「${server.name}」工具。`,
tool.description
]
.filter(Boolean)
.join(' ')
.slice(0, 1_000),
inputSchema: normalizeMcpToolSchema(tool.inputSchema),
annotations: tool.annotations
}
}
})
}
private async listAllCustomMcpTools(
client: Client,
server: ResolvedMcpServer,
signal: AbortSignal
): Promise<Awaited<ReturnType<Client['listTools']>>['tools']> {
return listAllMcpTools(client, server.name, signal, {
maximumTools: MAX_CUSTOM_MCP_TOOLS,
pageTimeoutMs: CUSTOM_MCP_TIMEOUT_MS,
totalTimeoutMs: CUSTOM_MCP_MAX_TOTAL_TIMEOUT_MS
})
}
private async publishCustomMcpToolListChanged(
capability: Capability
): Promise<void> {
const token = [...this.capabilities.entries()].find(
([, value]) => value === capability
)?.[0]
if (!token) {
return
}
const sessions = [...this.downstreamMcpSessions.values()].filter(
(session) =>
session.token === token &&
session.initialized &&
session.listedTools
)
await Promise.allSettled(
sessions.map((session) => session.mcp.sendToolListChanged())
)
}
private scheduleDynamicToolsRefresh(
capability: Capability,
connection: CustomMcpConnection
): void {
void this.refreshDynamicTools(capability, connection).catch(
() => undefined
)
}
private refreshDynamicTools(
capability: Capability,
connection: CustomMcpConnection,
signal?: AbortSignal
): Promise<void> {
if (connection.dynamicToolsRefresh) {
return connection.dynamicToolsRefresh
}
const effectiveSignal = signal
? AbortSignal.any([
signal,
capability.signal,
capability.brokerController.signal
])
: AbortSignal.any([
capability.signal,
capability.brokerController.signal
])
const changeVersion = connection.dynamicToolsChangeVersion
let refreshSucceeded = false
const refresh = (async () => {
try {
const tools = await this.listAllCustomMcpTools(
connection.client,
connection.server,
effectiveSignal
)
const bindings = this.createCustomMcpBindings(
connection.client,
connection.server,
tools
)
connection.bindings = bindings
connection.dynamicToolsChanged =
connection.dynamicToolsChangeVersion !== changeVersion
refreshSucceeded = true
await this.publishCustomMcpToolListChanged(capability)
} catch (error) {
connection.dynamicToolsChanged = true
if (effectiveSignal.aborted) {
throw effectiveSignal.reason
}
throw new Error(
`无法刷新 MCP Server「${connection.server.name}」的工具`,
{ cause: error }
)
}
})()
connection.dynamicToolsRefresh = refresh
void refresh.finally(() => {
connection.dynamicToolsRefresh = undefined
if (
refreshSucceeded &&
connection.dynamicToolsChanged &&
!capability.signal.aborted &&
!capability.brokerController.signal.aborted
) {
this.scheduleDynamicToolsRefresh(capability, connection)
}
}).catch(() => undefined)
return refresh
}
private async connectCustomMcpServer(
capability: Capability,
server: ResolvedMcpServer
): Promise<CustomMcpConnection> {
let connection: CustomMcpConnection | undefined
let dynamicToolsChangeVersion = 0
const client = new Client(
{
name: 'goodbuddy-main-mcp-broker',
version: '1.0.0'
},
server.allowDynamicTools
? {
listChanged: {
tools: {
autoRefresh: false,
debounceMs: 0,
onChanged: (error) => {
if (!error) {
dynamicToolsChangeVersion += 1
if (connection) {
connection.dynamicToolsChangeVersion =
dynamicToolsChangeVersion
connection.dynamicToolsChanged = true
this.scheduleDynamicToolsRefresh(
capability,
connection
)
}
}
}
}
}
}
: undefined
)
const signal = AbortSignal.any([
capability.signal,
capability.brokerController.signal
])
try {
await client.connect(
createMcpTransport(server, this.launchEnvironmentProvider),
{
timeout: CUSTOM_MCP_TIMEOUT_MS,
signal
}
)
const listedAtChangeVersion = dynamicToolsChangeVersion
const tools = await this.listAllCustomMcpTools(
client,
server,
signal
)
connection = {
client,
server,
bindings: this.createCustomMcpBindings(
client,
server,
tools
),
dynamicToolsSupported:
server.allowDynamicTools &&
client.getServerCapabilities()?.tools?.listChanged === true,
dynamicToolsChanged:
dynamicToolsChangeVersion !== listedAtChangeVersion,
dynamicToolsChangeVersion
}
if (connection.dynamicToolsChanged) {
this.scheduleDynamicToolsRefresh(capability, connection)
}
return connection
} catch (error) {
await client.close().catch(() => undefined)
throw new Error(
`无法加载 MCP Server「${server.name}」的工具`,
{ cause: error }
)
}
}
private async getCustomMcpBindings(
token: string,
signal?: AbortSignal,
refreshDynamic = true
): Promise<Map<string, CustomMcpBinding>> {
const capability = this.getCapability(token)
if (capability.customMcpServers.length === 0) {
return new Map()
}
if (!capability.customMcpConnections) {
capability.customMcpConnections = (async () => {
const results = await Promise.allSettled(
capability.customMcpServers.map((server) =>
this.connectCustomMcpServer(capability, server)
)
)
const connections = results.flatMap((result) =>
result.status === 'fulfilled' ? [result.value] : []
)
const failure = results.find(
(result) => result.status === 'rejected'
)
if (failure?.status === 'rejected') {
await Promise.allSettled(
connections.map((connection) => connection.client.close())
)
throw failure.reason
}
return connections
})()
}
let connections: CustomMcpConnection[]
try {
connections = await capability.customMcpConnections
} catch (error) {
capability.customMcpConnections = undefined
throw error
}
if (refreshDynamic) {
for (const connection of connections) {
if (
!connection.dynamicToolsSupported ||
(!connection.dynamicToolsChanged &&
!connection.dynamicToolsRefresh)
) {
continue
}
await this.refreshDynamicTools(
capability,
connection,
signal
)
}
}
const bindings = new Map<string, CustomMcpBinding>()
for (const connection of connections) {
for (const binding of connection.bindings) {
if (bindings.size >= MAX_CUSTOM_MCP_TOOLS) {
throw new Error('Agent Runtime MCP 工具总数超过 100 个安全限制')
}
if (bindings.has(binding.exposedTool.name)) {
throw new Error('Agent Runtime MCP 工具名称发生冲突')
}
bindings.set(binding.exposedTool.name, binding)
}
}
return bindings
}
async prepareCustomMcpTools(
token: string,
signal?: AbortSignal
): Promise<Tool[]> {
return [
...(await this.getCustomMcpBindings(token, signal)).values()
].map((binding) => binding.exposedTool)
}
private async callCustomMcpTool(
token: string,
binding: CustomMcpBinding,
argumentsValue: Record<string, unknown>,
signal: AbortSignal
): Promise<CallToolResult> {
const capability = this.getCapability(token)
const effectiveSignal = AbortSignal.any([
signal,
capability.signal,
capability.brokerController.signal
])
const params = {
name: binding.originalName,
arguments: argumentsValue
}
const options = {
timeout: CUSTOM_MCP_TIMEOUT_MS,
signal: effectiveSignal,
onprogress: () => undefined,
resetTimeoutOnProgress: true,
maxTotalTimeout: CUSTOM_MCP_MAX_TOTAL_TIMEOUT_MS
}
try {
if (binding.taskSupport !== 'required') {
return this.validateCustomMcpResult(
binding,
await binding.client.callTool(params, undefined, options)
)
}
let taskId: string | undefined
try {
for await (const message of binding.client.experimental.tasks.callToolStream(
params,
undefined,
{
...options,
task: {}
}
)) {
if (
(message.type === 'taskCreated' ||
message.type === 'taskStatus') &&
typeof message.task.taskId === 'string'
) {
taskId = message.task.taskId
} else if (message.type === 'result') {
return this.validateCustomMcpResult(
binding,
message.result
)
} else if (message.type === 'error') {
throw message.error
}
}
throw new Error('MCP 任务工具未返回最终结果')
} catch (error) {
if (taskId) {
await binding.client.experimental.tasks
.cancelTask(taskId, {
timeout: CUSTOM_MCP_TASK_CANCEL_TIMEOUT_MS,
maxTotalTimeout: CUSTOM_MCP_TASK_CANCEL_TIMEOUT_MS
})
.catch(() => undefined)
}
throw error
}
} catch (error) {
if (effectiveSignal.aborted) {
throw effectiveSignal.reason
}
throw new Error(
`MCP Server「${binding.server.name}」工具调用失败`,
{ cause: error }
)
}
}
private validateCustomMcpResult(
binding: CustomMcpBinding,
result: unknown
): CallToolResult {
const bounded = ensureBoundedCustomMcpResult(result)
if (!binding.outputValidator) {
return bounded
}
if (!bounded.structuredContent) {
if (!bounded.isError) {
throw new Error(
`MCP 工具「${binding.originalName}」未返回结构化结果`
)
}
return bounded
}
const validation = binding.outputValidator(
bounded.structuredContent
)
if (!validation.valid) {
throw new Error(
`MCP 工具「${binding.originalName}」返回结果不符合声明结构:${validation.errorMessage.slice(0, 500)}`
)
}
return bounded
}
private async closeCustomMcpConnections(
capability: Capability
): Promise<void> {
const pending = capability.customMcpConnections
capability.customMcpConnections = undefined
if (!pending) {
return
}
const connections = await pending.catch(() => [])
await Promise.allSettled(
connections.map((connection) => connection.client.close())
)
}
private requireConfig(
token: string,
requiredAccess: Exclude<MagicNotesCapabilityAccess, 'none'>
): {
capability: Capability
service: GoodBuddyConfigService
workspacePath: string
} {
const capability = this.getCapability(token)
const allowed =
capability.configAccess === 'write' ||
(requiredAccess === 'read' && capability.configAccess === 'read')
if (
!allowed ||
!this.configService ||
!capability.configWorkspacePath
) {
throw new Error('GoodBuddy configuration capability is unavailable')
}
return {
capability,
service: this.configService,
workspacePath: capability.configWorkspacePath
}
}
async callGoodBuddyConfigTool(
token: string,
name: GoodBuddyConfigToolName,
input: unknown,
signal?: AbortSignal
): Promise<Record<string, unknown>> {
const requiredAccess =
name === 'goodbuddy_config_apply' ? 'write' : 'read'
const { capability, service, workspacePath } =
this.requireConfig(token, requiredAccess)
const effectiveSignal = signal
? AbortSignal.any([signal, capability.signal])
: capability.signal
effectiveSignal.throwIfAborted()
switch (name) {
case 'goodbuddy_config_capabilities':
return { capabilities: service.getCapabilities(input) }
case 'goodbuddy_config_get':
return { config: await service.getSnapshot(input) }
case 'goodbuddy_config_plan':
return {
plan: await service.plan(
capability.requestId,
workspacePath,
input
)
}
case 'goodbuddy_config_apply':
return {
result: await service.apply(
capability.requestId,
input,
effectiveSignal,
capability.authorizeConfigApply
)
}
}
}
private requireMagicNotes(
token: string,
requiredAccess: Exclude<MagicNotesCapabilityAccess, 'none'>
): { capability: Capability; database: MagicNotesDatabase } {
const capability = this.getCapability(token)
const allowed =
capability.magicNotesAccess === 'write' ||
(requiredAccess === 'read' &&
capability.magicNotesAccess === 'read')
if (!allowed || !this.magicNotesDatabase) {
throw new Error('Magic Notes capability is unavailable')
}
return { capability, database: this.magicNotesDatabase }
}
listMagicNotes(
token: string,
input: unknown = {}
): MagicNoteToolSummary[] {
const { database } = this.requireMagicNotes(token, 'read')
const { limit } = magicNoteListTool.inputSchema.parse(input)
const notes: MagicNoteToolSummary[] = []
for (const note of database.listMagicNotes().slice(0, limit)) {
const item = toMagicNoteToolSummary(note)
if (
Buffer.byteLength(JSON.stringify({ notes: [...notes, item] })) >
MAX_RESULT_BYTES
) {
break
}
notes.push(item)
}
return notes
}
getMagicNote(token: string, input: unknown): MagicNoteToolDetail {
const { database } = this.requireMagicNotes(token, 'read')
const { noteId } = magicNoteGetTool.inputSchema.parse(input)
const detail = database.getMagicNote(noteId)
const result: MagicNoteToolDetail = {
...toMagicNoteToolSummary(detail),
entries: [],
truncated: false
}
for (const entry of detail.entries) {
const item: MagicNoteToolEntry = {
id: entry.id,
content: entry.plainText.slice(0, 12_000),
contentKind: entry.content.version === 2 ? 'paged-canvas' : 'rich-text',
contentVersion: entry.content.version,
plainTextEditable: entry.content.version === 1,
revision: entry.revision,
createdAt: entry.createdAt,
updatedAt: entry.updatedAt
}
if (
Buffer.byteLength(
JSON.stringify({
note: { ...result, entries: [...result.entries, item] }
})
) > MAX_RESULT_BYTES
) {
result.truncated = true
break
}
result.entries.push(item)
}
if (result.entries.length < detail.entries.length) {
result.truncated = true
}
return result
}
searchMagicNotes(
token: string,
input: unknown,
signal?: AbortSignal
): MagicNoteSearchResult[] {
const { capability, database } = this.requireMagicNotes(token, 'read')
const { query, limit } = magicNoteSearchTool.inputSchema.parse(input)
const effectiveSignal = signal
? AbortSignal.any([signal, capability.signal])
: capability.signal
effectiveSignal.throwIfAborted()
const notes = database.searchMagicNotes(query, limit)
const bounded: MagicNoteSearchResult[] = []
for (const note of notes) {
const candidate = [...bounded, note]
if (
Buffer.byteLength(JSON.stringify({ notes: candidate })) >
MAX_RESULT_BYTES
) {
break
}
bounded.push(note)
}
return bounded
}
createMagicNote(token: string, input: unknown): MagicNoteToolDetail {
const { database } = this.requireMagicNotes(token, 'write')
const parsed = magicNoteCreateTool.inputSchema.parse(input)
const content =
typeof parsed.content === 'string'
? textContent(parsed.content)
: undefined
return this.getMagicNote(
token,
{
noteId: database.createMagicNote({
title: parsed.title,
...(content ? { content } : {})
}).id
}
)
}
updateMagicNote(token: string, input: unknown): MagicNoteToolDetail {
const { database } = this.requireMagicNotes(token, 'write')
const parsed = magicNoteUpdateTool.inputSchema.parse(input)
database.updateMagicNote(parsed)
return this.getMagicNote(token, { noteId: parsed.noteId })
}
createMagicNoteEntry(
token: string,
input: unknown
): MagicNoteToolDetail {
const { database } = this.requireMagicNotes(token, 'write')
const parsed = magicNoteEntryCreateTool.inputSchema.parse(input)
const content = textContent(parsed.content)
database.createMagicNoteEntry({
noteId: parsed.noteId,
content,
plainText: magicNotePlainText(content)
})
return this.getMagicNote(token, { noteId: parsed.noteId })
}
updateMagicNoteEntry(
token: string,
input: unknown
): MagicNoteToolDetail {
const { database } = this.requireMagicNotes(token, 'write')
const parsed = magicNoteEntryUpdateTool.inputSchema.parse(input)
if (database.getMagicNoteEntry(parsed.entryId).content.version === 2) {
throw new Error('画布记录不能通过纯文本工具覆盖,请在画布编辑器中修改,或追加新的纯文本记录')
}
const content = textContent(parsed.content)
const detail = database.updateMagicNoteEntry({
entryId: parsed.entryId,
content,
plainText: magicNotePlainText(content),
expectedRevision: parsed.expectedRevision
})
return this.getMagicNote(token, { noteId: detail.id })
}
deleteMagicNoteEntry(
token: string,
input: unknown
): MagicNoteToolDetail {
const { database } = this.requireMagicNotes(token, 'write')
const parsed = magicNoteEntryDeleteTool.inputSchema.parse(input)
const entry = database.getMagicNoteEntry(parsed.entryId)
if (entry.revision !== parsed.expectedRevision) {
throw new Error('记录已被更新,请重新读取后重试')
}
const detail = database.deleteMagicNoteEntry(parsed.entryId)
return this.getMagicNote(token, { noteId: detail.id })
}
deleteMagicNote(
token: string,
input: unknown
): { deleted: true; noteId: string } {
const { database } = this.requireMagicNotes(token, 'write')
const parsed = magicNoteDeleteTool.inputSchema.parse(input)
const note = database.getMagicNote(parsed.noteId)
if (note.revision !== parsed.expectedRevision) {
throw new Error('笔记已被更新,请重新读取后重试')
}
database.deleteMagicNote(parsed.noteId)
return { deleted: true, noteId: parsed.noteId }
}
private async callScopedTool(
token: string,
name: ScopedDataToolName,
input: unknown,
signal?: AbortSignal
): Promise<Record<string, unknown>> {
switch (name) {
case 'knowledge_list':
return { libraries: this.listLibraries(token, input) }
case 'knowledge_search':
return { references: await this.search(token, input, signal) }
case 'note_list':
return { notes: this.listMagicNotes(token, input) }
case 'note_get':
return { note: this.getMagicNote(token, input) }
case 'note_search':
return { notes: this.searchMagicNotes(token, input) }
case 'note_create':
return { note: this.createMagicNote(token, input) }
case 'note_update':
return { note: this.updateMagicNote(token, input) }
case 'note_entry_create':
return { note: this.createMagicNoteEntry(token, input) }
case 'note_entry_update':
return { note: this.updateMagicNoteEntry(token, input) }
case 'note_entry_delete':
return { note: this.deleteMagicNoteEntry(token, input) }
case 'note_delete':
return this.deleteMagicNote(token, input)
case 'goodbuddy_config_capabilities':
case 'goodbuddy_config_get':
case 'goodbuddy_config_plan':
case 'goodbuddy_config_apply':
return this.callGoodBuddyConfigTool(token, name, input)
}
}
private createDownstreamMcpSession(
token: string,
availableTools: ReadonlySet<GoodBuddyBuiltinToolName>
): DownstreamMcpSession {
const mcp = new McpProtocolServer(
{
name: 'goodbuddy-request-scoped-capabilities',
version: '1.0.0'
},
{
capabilities: {
tools: {
listChanged: true
}
}
}
)
const transport = new StreamableHTTPServerTransport({
sessionIdGenerator: () => randomBytes(32).toString('base64url'),
onsessioninitialized: (sessionId) => {
this.downstreamMcpSessions.delete(session.registryKey)
session.id = sessionId
session.registryKey = sessionId
this.downstreamMcpSessions.set(sessionId, session)
},
onsessionclosed: (sessionId) => {
this.downstreamMcpSessions.delete(sessionId)
}
})
const session: DownstreamMcpSession = {
registryKey: randomBytes(32).toString('base64url'),
token,
mcp,
transport,
initialized: false,
listedTools: false
}
transport.onclose = () => {
this.downstreamMcpSessions.delete(session.registryKey)
}
mcp.oninitialized = () => {
session.initialized = true
}
mcp.setRequestHandler(
ListToolsRequestSchema,
async (_request, extra) => {
const customBindings = await this.getCustomMcpBindings(
token,
extra.signal
)
const scopedTools = [...availableTools].flatMap(
(name): Tool[] => {
const definition = scopedDataToolByName.get(
name as ScopedDataToolName
)
if (!definition) {
return []
}
const inputSchema = z.toJSONSchema(
definition.inputSchema,
{ target: 'draft-7' }
) as Tool['inputSchema'] & { $schema?: string }
Reflect.deleteProperty(inputSchema, '$schema')
return [
{
name,
title: definition.title,
description: definition.description,
inputSchema,
annotations: {
readOnlyHint: definition.access === 'read',
destructiveHint:
name === 'goodbuddy_config_apply' ||
name === 'note_delete' ||
name === 'note_entry_delete'
}
}
]
}
)
const capability = this.getCapability(token)
const imageTool = await imageToolDefinition(capability.imageToolBinding)
const browserTools = capability.browserConversationId && capability.browserTabId
? new BrowserModelTools({
service: this.browserService!,
conversationId: capability.browserConversationId,
browserTabId: capability.browserTabId
})
: undefined
const browserDefinitions = browserTools
? browserTools.listTools().map(
(definition): Tool => ({
name: definition.name,
title: definition.displayName,
description: definition.description,
inputSchema: definition.inputSchema as Tool['inputSchema'],
annotations: {
readOnlyHint:
definition.name === 'browser_snapshot' ||
definition.name === 'browser_screenshot',
destructiveHint: false
}
})
)
: []
session.listedTools = true
return {
tools: [
...(imageTool ? [{ name: imageTool.name, description: imageTool.description, inputSchema: imageTool.inputSchema as Tool['inputSchema'], annotations: { readOnlyHint: false, destructiveHint: false } }] : []),
...scopedTools,
...browserDefinitions,
...[...customBindings.values()].map(
(binding) => binding.exposedTool
)
]
}
}
)
mcp.setRequestHandler(
CallToolRequestSchema,
async (call, extra) => {
const name = call.params.name
const input = call.params.arguments ?? {}
if (name === 'generate_image') {
const capability = this.getCapability(token)
if (!capability.imageToolBinding) throw new Error('Image capability is unavailable')
const operation = await capability.imageToolBinding.call(input, `${session.registryKey}:${extra.requestId}`, AbortSignal.any([extra.signal, capability.signal]))
return { content: [{ type: 'text' as const, text: JSON.stringify(operation) }] }
}
if (availableTools.has(name as ScopedDataToolName)) {
const definition = scopedDataToolByName.get(
name as ScopedDataToolName
)
if (definition) {
const parsedInput = definition.inputSchema.safeParse(input)
if (!parsedInput.success) {
return {
isError: true,
content: [{
type: 'text' as const,
text: `Invalid arguments for ${name}: ${parsedInput.error.issues
.map((issue) => `${issue.path.join('.') || 'arguments'}: ${issue.message}`)
.join('; ')}. Correct the arguments and retry.`
}]
}
}
return {
content: [
{
type: 'text' as const,
text: JSON.stringify(
await this.callScopedTool(
token,
name as ScopedDataToolName,
parsedInput.data,
extra.signal
)
)
}
]
}
}
const capability = this.getCapability(token)
let browserTools = capability.browserConversationId && capability.browserTabId
? new BrowserModelTools({
service: this.browserService!,
conversationId: capability.browserConversationId,
browserTabId: capability.browserTabId
})
: undefined
if (browserTools?.ownsTool(name)) {
let lease = capability.browserUsageLease!
try {
const callSignal = AbortSignal.any([
extra.signal,
capability.signal,
capability.brokerController.signal
])
callSignal.throwIfAborted()
if (lease.signal.aborted) {
if (name !== 'browser_navigate') {
throw new Error('浏览器标签页已关闭,请调用 browser_navigate 打开新标签页。')
}
browserNavigateInputSchema.parse(input)
// A stable, request-specific ID also deduplicates concurrent recovery calls.
const tab = await this.browserService!.createTab(
capability.browserConversationId!,
undefined,
callSignal,
`browser-recovery:${capability.requestId}:${lease.tabId}`
)
callSignal.throwIfAborted()
if (capability.browserUsageLease === lease) {
const replacement = this.browserService!.acquireTabUsage(
capability.browserConversationId!,
tab.tabId,
capability.requestId
)
capability.browserTabId = tab.tabId
capability.browserUsageLease = replacement
lease.release()
}
lease = capability.browserUsageLease!
browserTools = new BrowserModelTools({
service: this.browserService!,
conversationId: capability.browserConversationId!,
browserTabId: capability.browserTabId!
})
}
const browserSignal = AbortSignal.any([callSignal, lease.signal])
browserSignal.throwIfAborted()
const result = await browserTools.callTool(
name,
input,
browserSignal
)
browserSignal.throwIfAborted()
const openedTabId = browserTools.getBoundTabId()
if (openedTabId !== lease.tabId && capability.browserUsageLease === lease) {
const replacement = this.browserService!.acquireTabUsage(
capability.browserConversationId!, openedTabId, capability.requestId
)
capability.browserTabId = openedTabId
capability.browserUsageLease = replacement
lease.release()
}
return {
content: result.parts.map((part) =>
part.type === 'text'
? { type: 'text' as const, text: part.text }
: {
type: 'image' as const,
data: part.data,
mimeType: part.mimeType
}
)
}
} catch (error) {
const detail =
(lease.signal.aborted
? '浏览器标签页已关闭,请调用 browser_navigate 打开新标签页。'
: safeToolErrorDetail(error, 2_000)) ??
'内置浏览器工具执行失败'
return {
isError: true,
content: [
{
type: 'text' as const,
text:
error instanceof BrowserStaleReferenceError
? `${detail}。请调用 browser_snapshot 获取新快照,然后使用新引用重试。`
: detail
}
]
}
}
}
}
const binding = (
await this.getCustomMcpBindings(token, extra.signal)
).get(name)
if (!binding) {
throw new Error('GoodBuddy MCP 工具不存在或已失效')
}
return this.callCustomMcpTool(
token,
binding,
input,
extra.signal
)
}
)
return session
}
private async handleRequest(
request: IncomingMessage,
response: ServerResponse
): Promise<void> {
if (request.url !== '/mcp') {
sendJson(response, 404, { error: 'Not found' })
return
}
if (
request.method !== 'POST' &&
request.method !== 'GET' &&
request.method !== 'DELETE'
) {
response.setHeader('allow', 'POST, GET, DELETE')
sendJson(response, 405, {
jsonrpc: '2.0',
error: { code: -32000, message: 'Method not allowed' },
id: null
})
return
}
const authorization = request.headers.authorization
if (
typeof authorization !== 'string' ||
!authorization.startsWith('Bearer ')
) {
sendJson(response, 401, { error: 'Unauthorized' })
return
}
const token = authorization.slice('Bearer '.length)
try {
this.getCapability(token)
} catch {
sendJson(response, 401, { error: 'Unauthorized' })
return
}
let body: unknown
if (request.method === 'POST') {
try {
body = await readBoundedJson(request, this.maximumBodyBytes)
} catch (error) {
sendJson(response, error instanceof RangeError ? 413 : 400, {
error:
error instanceof RangeError
? 'Request body too large'
: 'Invalid JSON'
})
return
}
}
const sessionId = request.headers['mcp-session-id']
let createdSession = false
let session =
typeof sessionId === 'string'
? this.downstreamMcpSessions.get(sessionId)
: undefined
if (session && session.token !== token) {
session = undefined
}
if (!session) {
if (
request.method !== 'POST' ||
!isInitializeRequest(body) ||
typeof sessionId === 'string'
) {
sendJson(response, typeof sessionId === 'string' ? 404 : 400, {
jsonrpc: '2.0',
error: {
code:
typeof sessionId === 'string' ? -32001 : -32000,
message:
typeof sessionId === 'string'
? 'Session not found'
: 'Bad Request: No valid session ID provided'
},
id: null
})
return
}
const sessionCount = [
...this.downstreamMcpSessions.values()
].filter((candidate) => candidate.token === token).length
if (
sessionCount >=
MAX_DOWNSTREAM_MCP_SESSIONS_PER_CAPABILITY
) {
sendJson(response, 429, {
jsonrpc: '2.0',
error: {
code: -32000,
message: 'Too many MCP sessions'
},
id: null
})
return
}
const availableTools = new Set(
this.getAvailableToolNames(token)
)
session = this.createDownstreamMcpSession(
token,
availableTools
)
createdSession = true
this.downstreamMcpSessions.set(session.registryKey, session)
await session.mcp.connect(session.transport)
}
try {
await session.transport.handleRequest(request, response, body)
} finally {
if (createdSession && session.id === undefined) {
await this.closeDownstreamMcpSession(session)
}
}
}
async dispose(): Promise<void> {
for (const token of [...this.capabilities.keys()]) {
this.revoke(token)
}
await Promise.allSettled([...this.downstreamMcpCleanups])
await Promise.allSettled([...this.customMcpCleanups])
const server = this.server
this.server = undefined
this.endpoint = undefined
if (server) {
await new Promise<void>((resolve) => server.close(() => resolve()))
}
}
}
import { imageToolDefinition, type ImageToolBinding } from './image-tool-binding'