"Free Network Graph Visualization Tools (No Account Required)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
IBGE: geography, census, economy and health from the official APIs, with provenance. 23 tools.
Banco Central do Brasil (BCB): SGS series, Focus expectations, PTAX, stats + provenance. 17 tools.
Source-backed timelines of long-running events in tech, the US economy and gaming. Every dated entry carries the page it was taken from and a verbatim quote, re-checked against that page before publication. Six read-only tools, no auth: list_timelines, get_timeline (with since= for what changed), get_entry (the quote and source to cite), get_party (one company, person or regulator across every timeline), search_entries and upcoming. Results carry entry URLs and name the outlet each quote came fr
Independent pre-transaction audit for construction estimates. Free, and every verdict recomputes.
Korean stock research MCP: DART financials, global filings, daily prices and research tools.
Ten government-record evidence tools for property, healthcare, facilities, Norway, and routing.
China supplier due diligence for AI agents: verify Chinese company identity/USCC, procurement and regulatory evidence, and source provenance. Free resolver; Basic $0.002 and Full $0.01 via x402 on Base USDC. No signup or API key. Limited to configured official/open datasets.
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 disc golf discs, compare Speed/Glide/Turn/Fade flight ratings, and find similar alternatives across brands. Free, public, read-only.
Wikipedia page views over time, with growth for any article topic. Free key at trendsmcp.ai
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.
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.
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.
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.
Verified US local service providers across 10 home-services trades. Ratings, hours, no API key.
One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.
French & European company registry for AI agents: KYB, sanctions, annual accounts. x402, no API key.
Resolve scholarly identifiers (DOI, PMID, ISBN, arXiv, ISSN, ADS, WHO IRIS) into citations (10,000+ CSL styles) and exports (BibTeX, RIS, EndNote...), plus retraction, open-access, and citation-fabrication checks. Six tools, anonymous-friendly Streamable HTTP.
