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Research & Grey LiteratureMCP serverFirst audited Nov 13, 2026

com.nobleblocks/nobleblocks-mcp

Search 340M+ academic papers — citation graphs, semantic similarity, and AI literature reviews.The vendor's description, from its MCP Registry listing.

Passed public checksAudited Nov 13, 2026

Every public check ran and passed. Public audit: we connect as an AI client would, list the tools and check what they say. We do not run them. How we audit

Does it work?
YesConnected in 859 ms.
Sign-up?
None neededIt answered without any account or key.
Can it change things?
No, read-onlyAll 11 tools say they only read.
Endpointhttps://mcp.nobleblocks.com/mcp

Source code Streamable HTTP · protocol 2025-11-25 · server version 4.0.0

What we checked, the evidence, and the tools it offers.

What we checked

Security

  • Passed: Connections are encrypted (HTTPS).

  • Passed: No hidden instructions found in tool text.

Safety labels

  • Passed: Every tool says whether it only reads or can change things.

Tools

  • Passed: 11 tools listed.

  • Passed: Every tool describes its inputs with a valid schema.

Protocol

  • Passed: The MCP handshake works (Streamable HTTP).

  • Passed: Protocol version 2025-11-25 (latest).

  • Passed: Unknown requests are refused.

Connection

  • Passed: The server responds.

Tools (11)

As the server describes them. The labels are the server's own: it says whether each tool only reads or can change things.

  • search_papersSearch the NobleBlocks index of scholarly papers by keyword relevance, with filters. Each result has title, authors, year, journal, DOI, citation count, an abstract excerpt, a NobleB…Read-only
  • search_trialsSearch clinical trial registrations (ClinicalTrials.gov or WHO ICTRP) held in the NobleBlocks index. Each result carries its registry id (`trial_id`, e.g. NCT01234567). Use get_paper with th…Read-only
  • get_paperFull metadata for one paper or trial: authors, journal, volume/issue/pages, identifiers (DOI, PMID, arXiv, OpenAlex, trial id, NobleID ARK when confirmed), retraction status, open acc…Read-only
  • get_citing_papersPapers in the NobleBlocks index that cite this paper, most cited first. Citation links are still being loaded, so an empty answer is reported as such, not as 'never cited'.Read-only
  • get_referencesPapers this paper cites (its reference list) that are in the NobleBlocks index, most cited first.Read-only
  • search_authorsFind researchers by name. Returns name, ORCID iD, OpenAlex id, affiliation and reported counts. Use get_author with an ORCID iD for the profile and top papers.Read-only
  • get_authorOne researcher's public profile by ORCID iD: name, affiliation, topics, reported metrics, NobleID when recorded, and their most cited papers in the index.Read-only
  • get_citationFormat a citation for one paper as BibTeX, RIS or APA 7. The URL is the paper's NobleID ARK when it has a confirmed one, else its DOI. DOIs known to be unreliable are left out rather than gue…Read-only
  • citeCitations for several papers at once, in one format, in the order given. Each entry links to the ARK or DOI; failures are listed per identifier instead of failing the whole call.Read-only
  • searchSearch scholarly papers and return citable results as {results: [{id, title, url}]}. `url` is open access first. Pass an `id` to fetch for the full text record.Read-only
  • fetchFetch one paper as {id, title, text, url, metadata}. `text` is the abstract plus a formatted citation; `url` is open access first.Read-only

Audit history

  1. Nov 13Passed

What we sent

Every request in this audit, with the answer and how long it took. We never send credentials and never call a tool.

RequestAnswerTime
initializeHTTP 200859 ms
initializedHTTP 202236 ms
tools/listHTTP 200718 ms
resources/listHTTP 200242 ms
prompts/listHTTP 200244 ms
unknown-methodHTTP 200243 ms

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