"How to check differences between files" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
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.
Live health leaderboard of x402 paid endpoints, plus an MCP server readiness check
Behind Check and GAIP Watch, and Diagnose: A2A, MCP and OpenAPI checks with a dated change log.
Audit OpenAI-compatible / x402 inference sellers; quick check 0.005, bill check 0.003 USDC
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.
Write, check, render and save sequence diagrams with the request and response on every arrow.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?
Is this x402/MPP API safe to pay? $0.001 preflight, fixes, a $0.25 test purchase. Free quick check.
Scores how well AI agents will use your API, 0-100, from its OpenAPI spec. Free and read-only.
Remote MCP that evaluates one public HTTPS URL for WebMCP readiness: intent, tools observed, what to add, what never to expose.
Annotation-survival conformance for MCP tools. Receipt $0.01, check $4.99, plans $9.99/$19.99.
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.
Check an x402 endpoint before you pay it, then test a payment and follow it to settlement.
Gemmein docs, API reference, error explainers and a live integration check for coding agents.
MCP endpoint to APIbase catalog (https://apibase.pro/llms.txt). USDC: x402 Base, MPP Tempo.
Live road conditions for the agent web: check a site or API before acting, report after.
Score any remote MCP server for Claude, ChatGPT, Gemini and MCP Registry readiness.
Trickl for AI assistants: full docs, setup plans, and sandbox tools to test purchases end to end.
Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight
Find any agent service, and check it before you pay for it or rely on it.
What is known to be broken in an MCP server or API operation, with the check that found it.
Diagnoses whether an MCP server is reachable, by live HTTP probe.
Check whether an MCP server answers, what its tools claim, and whether that claim has changed.
Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites
MCP server that delivers up-to-date Bitrix24 REST API documentation.
An MCP server that provides tools to validate an email address using Dilli Email Validation API.
NDJSON shape check, body discarded
Check whether a URL can be opened. No browser is launched.
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
Canary watches that check MCP servers' answers against ground truth and return signed verdicts.
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.
HttpStatus MCP Server — 24 AI-callable tools for API testing, mocking, monitoring, and security. Create and manage API mocks, run chaos engineering rules, validate OpenAPI specs, scan URLs for security issues, check SSL certificates, debug CORS, analyze redirect chains, decode JWTs, inspect HAR files, trace distributed requests, capture webhooks, build automation workflows (including Postman import), and set up uptime monitors — all from your AI assistant.
Hands-on test results for 560+ remote MCP connectors: does it work, how to sign in, what breaks.
AI-operated. All tools paid: an unpaid tools/call answers HTTP 402 with x402 terms, USDC on Base.
AI-operated. Free previews: licences, page reads, endpoint checks. Paid full versions over x402.
MCP server for AI access to SmartBear tools, including BugSnag, Reflect, Swagger, PactFlow, QTM4J.
MCP server for AI access to Swagger by SmartBear.
Check an MCP endpoint resolves: liveness, live tool list, schema drift. Free.
