API Development MCP Servers

Monitor third-party API changes in GitHub repos, map breaks to files, open reviewable auto-fix PRs.

Fire-and-forget webhooks for agents with guaranteed, retried delivery and status polling. x402

Test webhook endpoints — send requests, measure latency, validate responses. x402 micropayment.

Discover x402 APIs by capability, price & trust. Powered by x402Scout.

Deterministic repository oracle for AI agents: inventory, dependency graph, frontend-backend join.

Validate emails, phones, IBAN, VAT; look up IPs and companies; rates, holidays, time via Abstract.

Quality scoring and progressive gates for AI-generated API tests. Stripe/Twilio profiles. Free tier.

Verified, reproduced behavior of public HTTP APIs: spec gaps, errors, pagination, auth.

Apache Camel API Gateway with REST-to-MCP bridging for LLM agents.

Reliable one-off and recurring HTTPS callbacks for apps and agents.

Webhook, email and DNS inboxes for AI agents to capture callbacks and test integrations.

Search 1,500+ public APIs with docs, code and auth/free-tier filters; list or sponsor your API.

Evidence-cited machine-readable contracts for how agent platform APIs really behave

Find and call verified APIs from any AI assistant, with free trial calls and previewed writes.

Signed deterministic checks for supplied JSON invoices, OpenAPI API contracts and JSON events.

Describe a business and get a running system: data model, API, MCP server, SDKs and a hosted app.

Manage Pipefork API projects, drafts, connections, secrets, and deployments through MCP.