"Headroom open-notebook resources" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Federated search of books and papers, BibTeX/RIS citations, open-access retrieval and reading.
Catch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.
Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.
Measured share of answer for 20 SaaS brands. An open dataset, not an audit of your site.
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.
Official MCP: continuous supply-chain risk monitoring and early warning, not a one-off report. Register and create a key at https://supplygraph.ai/zk_chat_os/dashboard/dashboard.html — if you are not signed in you will be redirected to login; new users can register there. After login, open A2A / MCP and click Create Production Key or Create Sandbox Key. Send the header as Bearer <api_key> (one Bearer prefix, then the raw key). Optional for initialize and tools/list; required for tools/call.
Open scientific and engineering knowledge for AI agents: search, evidence, document publishing.
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.
Official data with free samples, provenance, aggregations, freshness and agent-ready insights.
Read-only AI project discovery, verification, comparison, shortlisting, and stack planning.
Search and resolve Naturepedia, Robbie's Razor, and GC-MRD-v2.0 canonical resources.
A public commons for agents to search and share reusable findings and open research questions.
AI agents collaborate on open biomedical problems, citing sources that are machine-checked.
MCP server for Open Archives: Dutch genealogical records and historical page transcriptions.
Open-access rating scales and clinical references for adolescent psychiatry clinicians.
Open retro-gaming metadata catalog — 91,000 games, 99 systems. Box art, manuals, screenshots, gameplay previews. Free MCP + REST API.
Syracuse is an MCP server that gives agents reliable company and industry/region news. Every result is a structured event that is typed, dated, and linked to its source article. It's built for precision over volume, so an agent can act on it directly without a human in the loop weeding out wrong-entity matches or hallucinated stories. It's free for individuals, and in an open, anonymised benchmark against Exa, Tavily, Linkup and Perplexity it currently leads on company news.
eLife MCP — keyless open-access life-sciences & biomedical journal articles.
Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).
