"Pro Tools" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Audit any domain or agent for A2A, MCP, x402, MPP, ERC-8004, and Poppy readiness.
Annotation-survival conformance for MCP tools. Receipt $0.01, check $4.99, plans $9.99/$19.99.
Remote MCP that evaluates one public HTTPS URL for WebMCP readiness: intent, tools observed, what to add, what never to expose.
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
AI-callable tools for API mocking, testing, monitoring, security, and automation.
MCP endpoint to APIbase catalog (https://apibase.pro/llms.txt). USDC: x402 Base, MPP Tempo.
Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.
Trickl for AI assistants: full docs, setup plans, and sandbox tools to test purchases end to end.
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.
Apideck Unified API MCP — 330 tools across 200+ SaaS connectors (accounting, CRM, HRIS, ATS).
Research, inference, data/web/email tools, and x402 conformance, service catalog and grade feeds.
Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight
Lints whether a paid API's 402 response speaks the x402 protocol correctly.
Your DRF API as MCP tools — 1,800 endpoints become 16 dispatchers, permissioned by Django.
Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.
Any API, four tools: discover, call with routing and signed receipts, verify, dispute.
Check whether an MCP server answers, what its tools claim, and whether that claim has changed.
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.
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
40+ developer tools from Context7, Code Runner, Python Execute, NPM Sentinel, PlantUML, and Microsoft Learn. Docs lookup, code execution, security scanning. Starts at $0.01/call. Get your API key at app.xpay.sh or xpay.tools
An MCP server that provides tools to validate an email address using Dilli Email Validation API.
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.
AI-operated. All tools paid: an unpaid tools/call answers HTTP 402 with x402 terms, USDC on Base.
MCP server for AI access to SmartBear tools, including BugSnag, Reflect, Swagger, PactFlow, QTM4J.
Search a catalog of tools and APIs, inspect endpoint schemas and prices, and run endpoints from an MCP client. Runs can use a prepaid workspace balance. The hosted server supports OAuth and bearer authentication.
Free MCP tools to validate multi-agent coordination thread turns and retrieve schema/samples.
Unified gateway exposing 150+ tools across all NexGenData MCP servers via one endpoint.
Send one HTTP request, or one per row of a dataset, CSV or Google Sheet, and get the response back
The Grafbase MCP server sits in front of a GraphQL API and exposes an MCP protocol-compliant interface that allows AI agents and LLMs to explore and query GraphQL APIs using natural language. It provides tools to search schemas, introspect types and fields, and execute GraphQL queries while minimizing context bloat by returning only relevant schema subsets, with built-in support for authentication, authorization, and configurable access control.
