Repository navigation
Expand file tree
/
Copy pathmcp.ts
More file actions
196 lines (184 loc) · 6.12 KB
/
Copy pathmcp.ts
File metadata and controls
196 lines (184 loc) · 6.12 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
import { Server } from '@modelcontextprotocol/sdk/server/index.js'
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'
import {
CallToolRequestSchema,
type CallToolResult,
ListToolsRequestSchema,
type ListToolsResult,
type Tool,
} from '@modelcontextprotocol/sdk/types.js'
import { getDefaultAppState } from 'src/state/AppStateStore.js'
import review from '../commands/review.js'
import type { Command } from '../commands.js'
import {
findToolByName,
getEmptyToolPermissionContext,
type ToolUseContext,
} from '../Tool.js'
import { getTools } from '../tools.js'
import { createAbortController } from '../utils/abortController.js'
import { createFileStateCacheWithSizeLimit } from '../utils/fileStateCache.js'
import { logError } from '../utils/log.js'
import { createAssistantMessage } from '../utils/messages.js'
import { getMainLoopModel } from '../utils/model/model.js'
import { hasPermissionsToUseTool } from '../utils/permissions/permissions.js'
import { setCwd } from '../utils/Shell.js'
import { jsonStringify } from '../utils/slowOperations.js'
import { getErrorParts } from '../utils/toolErrors.js'
import { zodToJsonSchema } from '../utils/zodToJsonSchema.js'
type ToolInput = Tool['inputSchema']
type ToolOutput = Tool['outputSchema']
const MCP_COMMANDS: Command[] = [review]
export async function s
CCE9
tartMCPServer(
cwd: string,
debug: boolean,
verbose: boolean,
): Promise<void> {
// Use size-limited LRU cache for readFileState to prevent unbounded memory growth
// 100 files and 25MB limit should be sufficient for MCP server operations
const READ_FILE_STATE_CACHE_SIZE = 100
const readFileStateCache = createFileStateCacheWithSizeLimit(
READ_FILE_STATE_CACHE_SIZE,
)
setCwd(cwd)
const server = new Server(
{
name: 'claude/tengu',
version: MACRO.VERSION,
},
{
capabilities: {
tools: {},
},
},
)
server.setRequestHandler(
ListToolsRequestSchema,
async (): Promise<ListToolsResult> => {
// TODO: Also re-expose any MCP tools
const toolPermissionContext = getEmptyToolPermissionContext()
const tools = getTools(toolPermissionContext)
return {
tools: await Promise.all(
tools.map(async tool => {
let outputSchema: ToolOutput | undefined
if (tool.outputSchema) {
const convertedSchema = zodToJsonSchema(tool.outputSchema)
// MCP SDK requires outputSchema to have type: "object" at root level
// Skip schemas with anyOf/oneOf at root (from z.union, z.discriminatedUnion, etc.)
// See: https://github.com/anthropics/claude-code/issues/8014
if (
typeof convertedSchema === 'object' &&
convertedSchema !== null &&
'type' in convertedSchema &&
convertedSchema.type === 'object'
) {
outputSchema = convertedSchema as ToolOutput
}
}
return {
...tool,
description: await tool.prompt({
getToolPermissionContext: async () => toolPermissionContext,
tools,
agents: [],
}),
inputSchema: zodToJsonSchema(tool.inputSchema) as ToolInput,
outputSchema,
}
}),
),
}
},
)
server.setRequestHandler(
CallToolRequestSchema,
async ({ params: { name, arguments: args } }): Promise<CallToolResult> => {
const toolPermissionContext = getEmptyToolPermissionContext()
// TODO: Also re-expose any MCP tools
const tools = getTools(toolPermissionContext)
const tool = findToolByName(tools, name)
if (!tool) {
throw new Error(`Tool ${name} not found`)
}
// Assume MCP servers do not read messages separately from the tool
// call arguments.
const toolUseContext: ToolUseContext = {
abortController: createAbortController(),
options: {
commands: MCP_COMMANDS,
tools,
mainLoopModel: getMainLoopModel(),
thinkingConfig: { type: 'disabled' },
mcpClients: [],
mcpResources: {},
isNonInteractiveSession: true,
debug,
verbose,
agentDefinitions: { activeAgents: [], allAgents: [] },
},
getAppState: () => getDefaultAppState(),
setAppState: () => {},
messages: [],
readFileState: readFileStateCache,
setInProgressToolUseIDs: () => {},
setResponseLength: () => {},
updateFileHistoryState: () => {},
updateAttributionState: () => {},
}
// TODO: validate input types with zod
try {
if (!tool.isEnabled()) {
throw new Error(`Tool ${name} is not enabled`)
}
const validationResult = await tool.validateInput?.(
(args as never) ?? {},
toolUseContext,
)
if (validationResult && !validationResult.result) {
throw new Error(
`Tool ${name} input is invalid: ${validationResult.message}`,
)
}
const finalResult = await tool.call(
(args ?? {}) as never,
toolUseContext,
hasPermissionsToUseTool,
createAssistantMessage({
content: [],
}),
)
return {
content: [
{
type: 'text' as const,
text:
typeof finalResult === 'string'
? finalResult
: jsonStringify(finalResult.data),
},
],
}
} catch (error) {
logError(error)
const parts =
error instanceof Error ? getErrorParts(error) : [String(error)]
const errorText = parts.filter(Boolean).join('\n').trim() || 'Error'
return {
isError: true,
content: [
{
type: 'text',
text: errorText,
},
],
}
}
},
)
async function runServer() {
const transport = new StdioServerTransport()
await server.connect(transport)
}
return await runServer()
}