| 1 | """Allowlisted MCP tool registry.""" |
| 2 | from __future__ import annotations |
| 3 | |
| 4 | from types import MappingProxyType |
| 5 | from typing import Any, Mapping |
| 6 | |
| 7 | from app.contracts import McpToolDefinition |
| 8 | |
| 9 | |
| 10 | class DuplicateMcpToolError(ValueError): |
| 11 | pass |
| 12 | |
| 13 | |
| 14 | class McpToolRegistry: |
| 15 | def __init__(self) -> None: |
| 16 | self._tools: dict[str, McpToolDefinition] = {} |
| 17 | |
| 18 | def register(self, definition: McpToolDefinition) -> None: |
| 19 | if definition.name in self._tools: |
| 20 | raise DuplicateMcpToolError(f"MCP tool already registered: {definition.name}") |
| 21 | self._tools[definition.name] = definition |
| 22 | |
| 23 | def get(self, name: str) -> McpToolDefinition | None: |
| 24 | return self._tools.get(name) |
| 25 | |
| 26 | @property |
| 27 | def tools(self) -> Mapping[str, McpToolDefinition]: |
| 28 | return MappingProxyType(self._tools) |
| 29 | |
| 30 | def discover(self) -> list[dict[str, Any]]: |
| 31 | return [ |
| 32 | { |
| 33 | "name": definition.name, |
| 34 | "description": definition.description, |
| 35 | "inputSchema": definition.input_model.model_json_schema(by_alias=True), |
| 36 | "riskClass": definition.risk_class.value, |
| 37 | "kind": definition.kind.value, |
| 38 | } |
| 39 | for definition in sorted(self._tools.values(), key=lambda item: item.name) |
| 40 | ] |