"QA review sentinel test marker" matching MCP connectors:

MarkupBase turns AI-generated Markdown and HTML into durable, versioned artifacts that people can review and discuss. Its MCP server lets agents publish new versions, preserve contextual comments, include hosted images, and respond to feedback through secure account-linked identities, creating a clear human review boundary without requiring real-time editing.

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

Taiwan stock market data (TWMD): official-source, point-in-time-safe datasets via read-only tools.

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

Real-time crypto market intelligence for AI agents. Live price, funding rate, open interest, buy/sell ratio, fear/greed, orderflow, and OHLCV history across 20 exchanges and 24 tokens. Address risk scoring included.

Prediction-market fee/KYC/withdrawal data, venue recommendations, and a paid x402 change feed.

AgentReady.market audit: can an AI shopping agent find, understand and BUY on this store? /100.

Read-only AWS cost analysis: find idle and underutilized resources, with evidence.

US real estate market data for AI agents: prices, yields, forecasts and scores for 894 markets.

Live market data & technical analysis for US stocks, ETFs and crypto. Read-only, no signup.

Read-only access to the Islam West Africa Collection via Hugging Face datasets.

AI-agent verifier: verdict committed before the outcome graded against it; /review, /ledger.

Human-authenticated setup for routing GitHub pull requests into the right Slack channel.

Read-only U.S. lab-test catalog, collection-site search, and reference-range context.

US market snapshot, stock fundamentals, prices, statements, news and analyst views

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

Run AI market research: synthetic customer panels for concept testing, message testing, segments.

Complete regulated intake work before human review. Klarefi gathers context, reads documents, resolves cited facts, runs verification, and prepares auditable case files.

Signed agent discovery, security attestations, paid work, and verified settlement reputation.

Published driving guides, source-backed UK and US test-centre search, and study-plan previews.