"Developing a Flutter application with embedded React Native" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Contract-change authorization for AI agents: preflight a change to an API or MCP contract, get a signed decision, and verify the receipt offline. Only a granted change can proceed.
Behind Check and GAIP Watch, and Diagnose: A2A, MCP and OpenAPI checks with a dated change log.
Write, check, render and save sequence diagrams with the request and response on every arrow.
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.
A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.
x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker
Grade MCP tool definitions for agent-readiness: score, A-F grade, fixes, est. token cost.
Turn any public webpage into JSON with AI, save it as a live JSON API, and call it from your agent.
Parallel-burst abuse testing for agent APIs with replayable evidence packs.
Traffic Parrot simulates APIs and messaging. Request or withdraw a trial, read docs, send feedback.
Pays your endpoint like a stranger would and signs a checkout conformance verdict.
Is this x402/MPP API safe to pay? $0.001 preflight, fixes, a $0.25 test purchase. Free quick check.
Live-payload conformance probes with signed receipts: ABSENT/EMPTY/PARTIAL/COMPLETE/BROKEN.
Refusal-dialect probe: signed cards naming what a server's 429 means and whether its meter lies.
Census and digest-verify a remote MCP server's loadable skills per host persona.
Retrieve YouTube transcripts with timestamps, native captions and asynchronous generation when captions are unavailable. Requires a Capslane API key.
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.
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
API documentation drifts away from the running service, so consumers integrate against a contract nobody keeps. Routebase keeps API design, testing, mocking and documentation on one living source of truth, and this MCP server exposes that workspace to AI agents. Agents can design endpoints, write and run test suites, manage mock servers and publish documentation, always under the permissions of the connected Routebase account.
AI-Powered Java/Spring Boot code review API with Alipay AI Pay support.
Deterministic JSON checks with signed evidence and x402-paid execution
Guide developers from setup through a verified, policy-aware, audited Alter API call.
Inspect external HTTPS 429/503 retries with server-recorded attempts, Retry-After and arrival times.
Hosted MCP infrastructure with seven typed tools: JSON repair, JSON Schema validation, JSON to TypeScript, CSV to JSON, JSON to CSV, OpenAPI security and webhook checks. Public tool discovery; execution uses scoped Bearer keys with tool allowlists, quotas and request IDs. Free deterministic calls, no LLM calls or USDC payments. Runnable repair → validate → CSV example: https://invokeport.com/agents/workflows/json-pipeline. MCP through 2025-11-25; custom headers, no OAuth.
Gemmein docs, API reference, error explainers and a live integration check for coding agents.
Lints whether a paid API's 402 response speaks the x402 protocol correctly.
What is known to be broken in an MCP server or API operation, with the check that found it.
Any API, four tools: discover, call with routing and signed receipts, verify, dispute.
Sanctions API docs and request validation, with account-linked synthetic sandbox testing.
Free MCP, API auth, webhook and schema diagnostics with bounded checks and safe quote routing.
