Github MCP Server

src
tools
import { z } from "zod";
import { GITHUB_API_BASE_URL } from "../constants.js";
import { $githubJson } from "../utils/gh-fetch.ts";
import { err, ok } from "neverthrow";
import type { Tool } from "@modelcontextprotocol/sdk/types.js";
import { zodToJsonSchema } from "zod-to-json-schema";

// @see https://docs.github.com/en/rest/search/search#search-code search code API docs

export const searchCodeInputSchema = z.object({
  query: z
    .string()
    .describe(
      "The query to search for (see Github search query syntax). The query contains one or more search keywords and qualifiers. Qualifiers allow you to limit your search to specific areas of GitHub. The REST API supports the same qualifiers as the web interface for GitHub. ",
    ),
  page: z.number().describe("Page number for pagination (default: 1)"),
  per_page: z
    .number()
    .describe("Number of results per page (default: 30, max: 100)"),
});

export const SEARCH_CODE_TOOL: Tool = {
  name: "search_code",
  description: "Search code from a repository",
  inputSchema: zodToJsonSchema(searchCodeInputSchema) as Tool["inputSchema"],
};

export type SearchCodeInput = z.output<typeof searchCodeInputSchema>;

export async function searchCode(input: SearchCodeInput) {
  const url = new URL(`/search/code`, GITHUB_API_BASE_URL);

  url.searchParams.set("q", input.query);

  if (input.page) url.searchParams.set("page", input.page.toString());

  if (input.per_page)
    url.searchParams.set("per_page", input.per_page.toString());

  const json = await $githubJson(url.toString());

  if (json.isErr()) return err(json.error);

  return ok(json.value);
}