"Creating files with a public endpoint" 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 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.

Deterministic JSON checks with signed evidence and x402-paid execution

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

Unified gateway exposing 150+ tools across all NexGenData MCP servers via one endpoint.

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.

MCP server and REST API for querying OpenAPI specs. Endpoint-level extraction, schema resolution, 100+ APIs indexed.

Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.

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.

Minimal streamable HTTP MCP server used for owned-account registry connectivity tests.

A basic MCP server to operate on the Postman API.

Public webhook inboxes for agents. Receive OAuth redirects, payment callbacks and CI notifications.

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.

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.

327 tools, 92 providers. Pay per call via x402 + MPP. One MCP endpoint.