API Development MCP Servers for Microsoft Copilot

Mock REST APIs, fake OAuth2/OIDC provider, uptime monitors + heartbeats, live badge/QR images.

Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema di

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

JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)

Range bytes start-end shape, value discarded

Refresh seconds;url shape, value discarded

Paid OpenAPI audit and API change detection for agents. $0.10 USDC per analysis via x402 on Base.

MCP server for secureFlows (secure-flows.com). Alias of io.github.michal-lefler/secureflows-mcp.

Receive, inspect, replay and deliver webhooks — with signature verification and agent triggers.

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

Keyless webhook endpoints: capture, wait, replay, forward, and generate types from real traffic.

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

Whether a token is an HTTP method

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

WSDL 2.0 interface count, markup discarded

Discover and call 10,000+ production APIs from one MCP server. Pay-per-call billing for AI agents.

Try 26 utility REST APIs keylessly: NAICS classification, IP geo, email validation, currency.

Discover, rate and compare APIs and providers in the APIs.io catalog; manage a listing you own.

Signed API declarations for agent handoffs. Free demo and verification; receipts cost 0.002 USDC.

Public webhook relay with signed observations, retries and verified receivers. Self-service.

Cloudflare Workers MCP server: form-backend