loadProto
Load and retrieve content from Protocol Buffer (.proto) files within a specified directory using the MCP server's gRPC-based tools.
Instructions
Load a proto file and return its content
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| dir | Yes | Directory containing the proto file (e.g., /path/to/proto) |
Implementation Reference
- src/index.ts:44-59 (registration)Registration of the MCP tool 'loadProto', including inline input schema and handler function that calls loader.loadAsync on the provided directory and serializes the result to JSON string.
server.addTool({ name: "loadProto", description: "Load a proto file and return its content", parameters: z.object({ dir: z.string().describe("Directory containing the proto file (e.g., /path/to/proto)"), }), execute: async (args) => { try { const res = await loader.loadAsync(args.dir); return obj2String(res, true); } catch (e) { Logger.error(e); return e instanceof Error ? e.message : "An unknown error occurred"; } }, }); - src/loader.ts:27-44 (handler)Core implementation logic for loading and parsing proto files from a directory: fetches proto definitions, extracts service names and method lists, structures output as array of objects with path and services.
async loadAsync(dir: string): Promise<Proto[]> { const proto = await protoLoader.loadAsync(dir); const result: Proto[] = []; for (const p of proto) { const services: Service[] = []; for (const s of p.protocolBuffer.services) { services.push({ name: s.name, methods: s.methods.map(m => m.name), }); } result.push({ path: p.protocolBuffer.metadata.protoPath, services: services, }); } return result; }, - Helper function protoLoader.loadAsync that discovers all .proto files in the directory, loads each asynchronously using loadProtoAsync (which uses @grpc/proto-loader), and returns array of parsed package definitions used by the loader.
async loadAsync(fileOrDir: string): Promise<ProtocolBufferPackageDefinition[]> { const files = await getFileAsync(fileOrDir, { extensions: [proto_ext] }); const protoTask = files.map((file) => this.loadProtoAsync(file)); return Promise.all(protoTask); }