API Development MCP Servers for HTTP / API

AsyncAPI channel count, body discarded

Content-Type token shape

What is known to be broken in an MCP server or API operation, with the check that found it.

Webhook, email, WebSocket and tunnel testing for AI agents: capture, wait, verify, replay.

Meaning of HTTP 409.

Meaning of HTTP 410.

Meaning of HTTP 413.

Meaning of HTTP 414.

Meaning of HTTP 415.

Meaning of HTTP 422.

Meaning of HTTP 426.

Swagger Petstore API (v1.0.27) as MCP for testing and prototyping powered by the HAPI MCP server

SSE Accept hint

Send, retry and monitor webhooks: manage endpoints, event types and API keys (OAuth).

Ephemeral HTTPS inbox for bots: mint URL, capture POSTs, list JSON. TEST. https://inbox.kymac.co

Generates deterministic webhook HMAC-SHA256 fixtures and optionally verifies a supplied signature...

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

Anonymous webhook capture, inspection, waiting, and response configuration for AI agents.

Build, validate, and manage API simulations in WireMock Cloud from MCP-compatible AI agents.

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

Accept-Post media-type count, value discarded