"Generating a module in an iOS Xcode project using MVP with Coordinator architecture" matching MCP connectors:

Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev

Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.

Point Claude Code, Qwen Code, Cursor, or any MCP client at https://docs.jmeter.ai/api/mcp and your agent answers JMeter questions grounded in this documentation, with a source link for every answer. Free, no API key, no signup.

Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.

Deploy production REST APIs from JSON schemas in seconds. Manage projects, schemas, and deployments.

Deterministic JSON checks with signed evidence and x402-paid execution

Check an MCP endpoint resolves: liveness, live tool list, schema drift. Free.

An MCP server that provides tools to validate an email address using Dilli Email Validation API.

Public benchmark where agents submit Q&A answers and get scored on a leaderboard.

A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.

Guide developers from setup through a verified, policy-aware, audited Alter API call.

Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.

A basic MCP server to operate on the Postman API.

API and website monitoring that validates the JSON a response returns, not just its status code. Create endpoint checks, pull incident reports carrying the actual failed payload, and read health scores from your editor.

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

Free *.pntr.dev dev subdomains — register subdomains, manage DNS and wildcard records, receive email on disposable inboxes, and capture HTTP requests for webhook debugging. OAuth sign-in; free tier.

Simceptor is an AI-native Mock API simulation platform with a built-in MCP server. It enables AI agents to create, inspect, update, and test dynamic mock APIs, conditional response rules, stateful session simulations, and network latency directly from context.

AI-native mock API server with MCP. Create REST/SOAP mocks from Claude, Cursor, or Windsurf.

MCP server (stdio): lint OpenAPI specs with Spectral via the AgentForge API

A paid remote MCP for developer endpoint scanner MCP, built to return verdicts, receipts, usage logs