The dynamic MCP server fetches its tool list from the Yantrix registry at startup. New APIs appear automatically — no package update ever needed.
| Variable | Description | Default | Required |
|---|---|---|---|
| X_PAYMENT_HEADER | x402 payment proof for USDC micropayments. Generate at x402.org. | — | Production |
| DEV_MODE | Skip payment validation. Use for local testing only. | false | Optional |
| YANTRIX_REGISTRY_URL | Override the registry URL. Useful for self-hosted or staging environments. | registry.yantrix.ai/mcp-registry.json | Optional |
The live registry that powers the MCP package. Fetched on every startup. Browse all tools and their schemas.