@mcpolyglot/config

Config schema and loader for mcpolyglot. Validates user config with Zod and resolves secrets from env / file / OS keychain refs.

Define a config

import { defineConfig } from '@mcpolyglot/config';

export default defineConfig({
  server: { name: 'mcpolyglot', version: '0.0.1' },
  transport: { kind: 'stdio' },
  sources: [
    {
      id: 'pg.main',
      kind: 'postgres',
      url: '${env:DATABASE_URL}',
      scopes: ['schema:read', 'tables:read', 'query:raw'],
      perEntityTools: { enabled: false },
      limits: { rowCap: 200, timeoutMs: 10_000, maxBytes: 262144 },
      redact: { columns: ['public.users.password_hash'], patterns: [] },
    },
  ],
});

Both .ts and .yaml configs are supported.

Secret refs

Literal credentials are rejected. You must use one of:

• ${env:NAME} — process environment.
• ${file:./path} — file on disk (good for Docker secrets / mounted files).
• ${keychain:item} — OS keychain via the optional keytar dep.

Docs

• Full README → https://github.com/ishay60/mcpolyglot
• Schema source → src/schema.ts

MIT licensed.