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fix(mcp): don't crash server when no repos are indexed (#91)

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The MCP server called process.exit(1) at startup when no repositories
were found in the registry. This prevented users from configuring the
MCP integration before running `gitnexus analyze`.

The server now starts gracefully with 0 repos and discovers newly
indexed repos lazily via refreshRepos() on each tool call.

Closes #91

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
abhigyanpatwari 2026-02-27 10:36:35 +05:30
parent b0182b43bb
commit eb6db8a419
1 changed files with 10 additions and 25 deletions
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35
gitnexus/src/cli/mcp.ts
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@ -8,7 +8,6 @@
import { startMCPServer } from '../mcp/server.js';
import { LocalBackend } from '../mcp/local/local-backend.js';
import { listRegisteredRepos } from '../storage/repo-manager.js';
export const mcpCommand = async () => {
// Prevent unhandled errors from crashing the MCP server process.
@ -21,33 +20,19 @@ export const mcpCommand = async () => {
console.error(`GitNexus MCP: unhandled rejection — ${msg}`);
});
// Load all registered repos
const entries = await listRegisteredRepos({ validate: true });
if (entries.length === 0) {
console.error('');
console.error(' GitNexus: No indexed repositories found.');
console.error('');
console.error(' To get started:');
console.error(' 1. cd into a git repository');
console.error(' 2. Run: gitnexus analyze');
console.error(' 3. Restart your editor');
console.error('');
process.exit(1);
}
// Initialize multi-repo backend from registry
// Initialize multi-repo backend from registry.
// The server starts even with 0 repos — tools call refreshRepos() lazily,
// so repos indexed after the server starts are discovered automatically.
const backend = new LocalBackend();
const ok = await backend.init();
await backend.init();
if (!ok) {
console.error('GitNexus: Failed to initialize backend from registry.');
process.exit(1);
const repos = await backend.listRepos();
if (repos.length === 0) {
console.error('GitNexus: No indexed repos yet. Run `gitnexus analyze` in a git repo — the server will pick it up automatically.');
} else {
console.error(`GitNexus: MCP server starting with ${repos.length} repo(s): ${repos.map(r => r.name).join(', ')}`);
}
const repoNames = (await backend.listRepos()).map(r => r.name);
console.error(`GitNexus: MCP server starting with ${repoNames.length} repo(s): ${repoNames.join(', ')}`);
// Start MCP server (serves all repos)
// Start MCP server (serves all repos, discovers new ones lazily)
await startMCPServer(backend);
};