"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Every match, not the top 10. Searches your documents and returns each relevant one, with quotes.
Forecasts, official weather alerts, air quality, 20 years of history, and PV and wind production, via the Meteosource API. Hosted, with your own API key.
Paste-your-data analytics: CSV profiling, A/B tests, correlation, growth. 4 of 7 free.
Multi-LLM entity enrichment: schemas, single/batch enrichment, fusion, model benchmarks.
Convert PDF bank statements into Excel and check that the balances add up. Invoices and tables too.
The right context at the right time, from the world's leading data providers. One API. 800+ tools.
Live data on millions of companies worldwide, read from their own websites, job boards and public registers: what they do, where they operate, their tech stack, funding rounds and investors, and how fast they grow. Find companies by industry, country, size, founding year, funding stage, investor or technology; get lookalikes of any company with the reasons; research one company in depth; search verified job postings and pay statistics. Read-only, OAuth sign-in; compact lists are free up to 50 a day, full profiles and statistics are paid from Alion credits.
Follow live feeds from Twitter/X, Telegram, press releases, SEC filings and more; publish your own.
Pull tables out of a PDF as rows and cells, ready for a spreadsheet or a data pipeline.
Company enrichment API: firmographics from a domain, work email or IP. Identifies website visitors.
DePIN network telemetry with the source, as_of time and an upstream verify URL on every value.
Free, no-key MCP connector for market data in Claude, Cursor and any Streamable HTTP client. Six tools: a pre-market and after-hours gapper scanner (get_premarket_gappers: top 10 names up 10% or more, $1-$100, float under 100M, with premarket relative volume, ATR, RSI and a news-catalyst flag), plus the Market Health desk: S&P 500 valuation verdict (get_market_valuation), Fed liquidity and yield-curve series (get_macro_liquidity), cross-asset regime (get_cross_asset_regime), market breadth (get_market_breadth) and risk-score history (get_market_health_history). Ships with a ready-made prompt, premarket_gappers_brief. Nothing to sign up for. Built by TraderMatrix. The full TraderMatrix connector has 51 tools, adding options flow, dealer gamma and Apex levels, unusual activity, sector flow, wheel screeners and your own watchlists.
The company brain for your AI agents: how your business works, from the systems you already use.
Polymarket smart money: rank traders by on-chain realized PnL, read their records, follow their live fills, and buy their past trades.
Public statistics from Bettrails for eSoccer (virtual football), League of Legends, Dota 2, CS2, VALORANT and NBA 2K: eSoccer head-to-heads and player profiles, search across Bettrails, any public page (today's matches, standings, Worlds 2026, teams, players, records) and alert links before a match. Read-only, no account needed. Statistics only, no odds or tips.
Query your databases and build dashboards, Streamlit apps and reports your team logs in to.
Company data for sales and research agents: website tech stack, live open jobs from public ATS boards, a hiring-intent score and Google Ads by domain. 5 free calls a day, then pay per call with x402 (USDC on Base).
The data and trading platform for AI: decades of US market data, backtests in seconds.
US stocks incl. delisted, futures, CPI/macro vintages, point-in-time GEX, 13F, COT, backtests.
Validate and clean CSV before import. Find duplicates, missing values and invalid dates with row-level reports. Apply only the cleanup you request; files are not retained. Run view_csv_demo free without a key. Custom CSV: EUR 9 for 100 operations, valid 90 days, no subscription. Setup: https://check.orvel.dev/docs/
