Spaces:
Runtime error
Runtime error
File size: 15,649 Bytes
a876f68 | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 | """
ToolStore as an MCP server.
Exposes all indexed tools (api, mcp, skill) as MCP tools/resources/prompts
so any MCP-compatible host (Claude Desktop, VS Code, etc.) can connect and
use the entire ToolStore catalog.
Implements the full MCP server feature set:
- tools/list, tools/call
- resources/list, resources/read
- prompts/list, prompts/get
- notifications for list changes
Supports stdio transport natively, plus a FastAPI integration for SSE.
"""
from __future__ import annotations
import json
import sys
import threading
from typing import Dict, List, Any, Optional, Callable
from toolstore.schema_converter import (
toolstore_to_mcp, flatten_mcp_content, bulk_to_openai
)
from toolstore.skill_manager import get_skill_manager
# ---------------------------------------------------------------------------
# ToolStore MCP Server (protocol logic only — transport agnostic)
# ---------------------------------------------------------------------------
class ToolStoreMCPServer:
"""Protocol handler for ToolStore-as-MCP-server.
This is transport-agnostic. Hook it up to stdio or an SSE endpoint.
"""
PROTOCOL_VERSION = "2024-11-05"
SERVER_NAME = "toolstore"
SERVER_VERSION = "2.0.0"
def __init__(self, index_manager, config_manager, skill_manager=None):
self._index = index_manager
self._config = config_manager
self._skills = skill_manager or get_skill_manager()
self._request_id = 0
self._lock = threading.Lock()
self._on_send: Optional[Callable[[Dict[str, Any]], None]] = None
# Track whether capabilities were declared
self._declared_caps: Dict[str, Any] = {}
# ------------------------------------------------------------------
# Transport hook
# ------------------------------------------------------------------
def set_send_callback(self, callback: Callable[[Dict[str, Any]], None]) -> None:
"""Register the function used to send messages back to the client."""
self._on_send = callback
def handle_message(self, raw: Dict[str, Any]) -> None:
"""Process an incoming JSON-RPC message from the client."""
method = raw.get("method")
rid = raw.get("id")
params = raw.get("params", {})
# Notification (no id)
if rid is None:
self._handle_notification(method, params)
return
# Request
try:
result = self._dispatch(method, params)
self._send({"jsonrpc": "2.0", "id": rid, "result": result})
except Exception as exc:
self._send({
"jsonrpc": "2.0", "id": rid,
"error": {"code": -32603, "message": str(exc)},
})
# ------------------------------------------------------------------
# Dispatch
# ------------------------------------------------------------------
def _dispatch(self, method: str, params: Any) -> Any:
handlers = {
"initialize": self._handle_initialize,
"tools/list": self._handle_tools_list,
"tools/call": self._handle_tools_call,
"resources/list": self._handle_resources_list,
"resources/read": self._handle_resources_read,
"prompts/list": self._handle_prompts_list,
"prompts/get": self._handle_prompts_get,
}
handler = handlers.get(method)
if handler is None:
raise RuntimeError(f"Unknown method: {method}")
return handler(params)
def _handle_notification(self, method: str, params: Any) -> None:
if method == "notifications/initialized":
pass # client is ready
# Silently ignore others
# ------------------------------------------------------------------
# initialize
# ------------------------------------------------------------------
def _handle_initialize(self, params: Dict[str, Any]) -> Dict[str, Any]:
self._declared_caps = {
"tools": {"listChanged": True},
"resources": {"listChanged": False},
"prompts": {"listChanged": False},
}
return {
"protocolVersion": self.PROTOCOL_VERSION,
"capabilities": self._declared_caps,
"serverInfo": {
"name": self.SERVER_NAME,
"version": self.SERVER_VERSION,
},
}
# ------------------------------------------------------------------
# tools/list
# ------------------------------------------------------------------
def _handle_tools_list(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""Return all indexed tools in MCP format."""
tools = []
all_tools = self._index.index_data.get("tools", {})
for _name, tool_def in all_tools.items():
tools.append(toolstore_to_mcp(tool_def))
# Also include live MCP-scanned tools not yet in index? For now,
# only indexed tools are exposed.
return {"tools": tools}
# ------------------------------------------------------------------
# tools/call
# ------------------------------------------------------------------
def _handle_tools_call(self, params: Dict[str, Any]) -> Dict[str, Any]:
tool_name = params["name"]
arguments = params.get("arguments", {})
tool_def = self._index.get_tool(tool_name)
if not tool_def:
return {
"content": [{"type": "text", "text": f"Tool '{tool_name}' not found"}],
"isError": True,
}
# Dispatch by type
tool_type = tool_def.get("type", "api")
try:
if tool_type == "skill":
return self._execute_skill(tool_def, arguments)
elif tool_type == "api":
return self._execute_api(tool_def, arguments)
elif tool_type == "mcp":
return self._execute_mcp(tool_def, arguments)
else:
return {
"content": [{"type": "text",
"text": f"Unknown tool type: {tool_type}"}],
"isError": True,
}
except Exception as exc:
return {
"content": [{"type": "text", "text": str(exc)}],
"isError": True,
}
def _execute_api(self, tool_def: Dict[str, Any],
args: Dict[str, Any]) -> Dict[str, Any]:
import httpx
url = tool_def["endpoint"]
method = tool_def.get("method", "GET").upper()
# Path param substitution
final_url = url
for k, v in args.items():
if f"{{{k}}}" in final_url:
final_url = final_url.replace(f"{{{k}}}", str(v))
request_params = {k: v for k, v in args.items()
if f"{{{k}}}" not in url}
if method == "GET":
resp = httpx.get(final_url, params=request_params, timeout=30.0)
else:
resp = httpx.request(method, final_url, json=request_params,
timeout=30.0)
try:
body = json.dumps(resp.json(), indent=2)
except Exception:
body = resp.text
return {"content": [{"type": "text", "text": body}]}
def _execute_mcp(self, tool_def: Dict[str, Any],
args: Dict[str, Any]) -> Dict[str, Any]:
from toolstore.mcp_client import get_client
server_name = tool_def.get("mcp_server")
if not server_name:
return {"content": [{"type": "text",
"text": "Tool missing mcp_server"}],
"isError": True}
servers = self._config.get_mcp_servers()
config = servers.get(server_name)
if not config:
return {"content": [{"type": "text",
"text": f"MCP server '{server_name}' "
"not configured"}],
"isError": True}
client = get_client(server_name, config)
result = client.call_tool(tool_def["name"], args)
return result # already has 'content' and 'isError'
def _execute_skill(self, tool_def: Dict[str, Any],
args: Dict[str, Any]) -> Dict[str, Any]:
"""Execute a skill tool. Args: load/files/file/run, script?"""
action = args.get("action", "load")
skill_name = tool_def["name"]
# Ensure the skill manager has this skill loaded
if not self._skills.get_skill(skill_name):
from toolstore.skill_manager import SkillManager
dirs = self._config.get_skill_dirs()
if dirs:
fresh = SkillManager(dirs)
fresh.scan()
self._skills = fresh
if action == "load":
body = self._skills.get_skill_body(skill_name)
if body is None:
return {"content": [{"type": "text",
"text": f"Skill '{skill_name}' not loaded"}],
"isError": True}
return {"content": [{"type": "text", "text": body}]}
elif action == "files":
sd = self._skills.get_skill(skill_name)
if not sd:
return {"content": [{"type": "text",
"text": f"Skill '{skill_name}' not found"}],
"isError": True}
flist = [str(f) for f in sd.list_files()]
return {"content": [{"type": "text",
"text": "\n".join(flist) or "(no extra files)"}]}
elif action == "file":
file_path = args.get("file_path", "")
if not file_path:
return {"content": [{"type": "text",
"text": "file_path is required for "
"action='file'"}],
"isError": True}
content = self._skills.get_skill_file(skill_name, file_path)
if content is None:
return {"content": [{"type": "text",
"text": f"File '{file_path}' not found "
f"in skill '{skill_name}'"}],
"isError": True}
return {"content": [{"type": "text", "text": content}]}
elif action == "run":
script = args.get("script", "")
if not script:
return {"content": [{"type": "text",
"text": "'script' argument required for action='run'"}],
"isError": True}
output = self._skills.run_skill_script(skill_name, script)
return {"content": [{"type": "text", "text": output}]}
else:
return {"content": [{"type": "text",
"text": f"Unknown action: {action}"}],
"isError": True}
# ------------------------------------------------------------------
# resources/list
# ------------------------------------------------------------------
def _handle_resources_list(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""Expose skill SKILL.md files as resources."""
resources = []
for name, sd in self._skills._skills.items():
resources.append({
"uri": f"skill://{name}/SKILL.md",
"name": f"Skill: {name}",
"description": sd.description,
"mimeType": "text/markdown",
})
return {"resources": resources}
# ------------------------------------------------------------------
# resources/read
# ------------------------------------------------------------------
def _handle_resources_read(self, params: Dict[str, Any]) -> Dict[str, Any]:
uri = params["uri"]
# Parse skill:// URIs
if uri.startswith("skill://") and uri.endswith("/SKILL.md"):
name = uri[len("skill://"):-len("/SKILL.md")]
body = self._skills.get_skill_body(name)
if body is not None:
return {
"contents": [{
"uri": uri,
"mimeType": "text/markdown",
"text": body,
}],
}
# Fallback: read raw from any indexed tool's schema
for tname, tool_def in self._index.index_data.get("tools", {}).items():
if uri == f"tool://{tname}":
return {
"contents": [{
"uri": uri,
"mimeType": "application/json",
"text": json.dumps(tool_def, indent=2),
}],
}
raise RuntimeError(f"Resource not found: {uri}")
# ------------------------------------------------------------------
# prompts/list
# ------------------------------------------------------------------
def _handle_prompts_list(self, params: Dict[str, Any]) -> Dict[str, Any]:
"""Expose each loaded skill's body as an available prompt."""
prompts = []
for name, sd in self._skills._skills.items():
prompts.append({
"name": name,
"description": sd.description or f"Skill: {name}",
"arguments": [],
})
return {"prompts": prompts}
# ------------------------------------------------------------------
# prompts/get
# ------------------------------------------------------------------
def _handle_prompts_get(self, params: Dict[str, Any]) -> Dict[str, Any]:
name = params["name"]
body = self._skills.get_skill_body(name)
if body is None:
raise RuntimeError(f"Prompt not found: {name}")
return {
"description": f"Skill instructions for {name}",
"messages": [
{"role": "user", "content": {"type": "text", "text": body}},
],
}
# ------------------------------------------------------------------
# Helpers
# ------------------------------------------------------------------
def _send(self, message: Dict[str, Any]) -> None:
if self._on_send:
self._on_send(message)
# ------------------------------------------------------------------
# Stdio runner (for standalone mode)
# ------------------------------------------------------------------
def run_stdio(self) -> None:
"""Run the server on stdin/stdout (e.g. for Claude Desktop)."""
self.set_send_callback(
lambda msg: sys.stdout.write(json.dumps(msg) + "\n")
)
# Debug logging to stderr
print(f"ToolStore MCP Server v{self.SERVER_VERSION} ready",
file=sys.stderr)
for line in sys.stdin:
line = line.strip()
if not line:
continue
try:
msg = json.loads(line)
except json.JSONDecodeError:
continue
self.handle_message(msg)
sys.stdout.flush()
|