"QA review sentinel test marker" matching MCP connectors:

Live multi-asset market data for AI agents with provenance, starter credits, x402, and examples.

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

Agentic code review, no signup to try: reality gates + frontier-model review, with veto.

Stress-test a decision through named thinkers' lenses: assumptions, counter-arguments, receipt.

Native cross-chain swaps: Bitcoin, Ethereum, Solana, Polkadot, Tron, Arbitrum. Quote, swap, track.

90+ free tools, Claude & ChatGPT: prices, options, SEC filings, 13F, insider, congress, transcripts.

Discover verified deep-tech engineering bounties from any AI agent.

Live Iran exchange rates, gold, crypto, and Toman market data for AI agents.

Paid dev services for AI agents: code review, bug-fix, tests, docs, audits. USDC on Base x402.

Strava MCP tools for AI: athletes, activities, segments, clubs, routes. Powered by HAPI MCP server.

LinkedIn API as MCP tools to retrieve profile data and publish content. Powered by HAPI MCP.

Focused MCP server for OpenAI image/audio generation (v2.0.0). Wraps endpoints via HAPI CLI.

MCP server for structured access to Lenny Rachitsky podcast transcripts. For content creators.

Swagger Petstore API (v1.0.27) as MCP for testing and prototyping powered by the HAPI MCP server

Contabo API (v1.0.0) as MCP tools for cloud provisioning, and management. Powered by HAPI MCP server