"Search functionality without API key requirement" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Catch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.
Money, FX, capital-market and metadata-only China macro evidence with source clocks and limits.
Clean SEC EDGAR company financials for AI agents — normalized income statement, balance sheet, cash flow, computed ratios, company profiles, filings, and 10-K/10-Q narrative sections (Risk Factors, MD&A) for 10,000+ US public companies. 5 tools: get_fundamentals, get_ratios, get_company, get_filings, get_sections. Free tier, no card.
Search US product recalls (FDA, USDA, CPSC) via MCP. Free API keys or $0.025 USDC/call on Base via x402. Tools: search_product_recalls, search_product_recalls_by_upc, search_product_recalls_from_image. Docs: https://recallkitchen.com/docs/ GitHub: https://github.com/Recall-Kitchen/rk-mcp
Rights-aware censorship, China-economic status, and tamper-evident AI evaluation tools.
Verified brand claims with receipts for agent commerce. Ranking is never paid; the engine is open.
US federal contract recompetes with the incumbent named, awards by company, agency spend.
Search Vascue's public healthcare-ops, insurance-claims and booking docs. Public content only.
Government tender search for AI agents. UK, EU and US procurement opportunities.
Search otwarteAPI.pl — a catalog of 53 official public Polish and EU APIs (VAT white list, KRS, GUS, NBP, ECB, Eurostat, VIES and more), curated for AI agents. One tool: find the right API by natural-language query. No API key, no signup.
Verify phone numbers, emails and IPs, and check remaining plan credits.
Search otwarteAPI.pl: a catalog of public Polish & EU government/data APIs, for AI agents. Keyless.
Verified data on 8,000+ AI tools for any AI assistant: live status, pricing reality, user sentiment, viability, and alternatives, every answer carries a last-verified date. Free, read-only, no auth.
Sourced carbon emission factors + audit-traced calculations an AI can cite.
Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
Live Australian grocery prices from Woolworths, Coles, Aldi and Harris Farm.
Verified US local service providers across 10 home-services trades. Ratings, hours, no API key.
25 deterministic data, repository, API, and public-web utilities with Base-USDC x402 pay-per-call settlement.
Search and compare attributed recipe records through a public read-only remote MCP endpoint.
