Google tells you what exists. Faceabot tells you what holds up.
Check if a US legal citation exists, names its case and has a valid pin cite; or find a case. Free.
MCP endpoint :https://loupe.legal/mcp-public · website · measurements and detailsFree, keyless postal/ZIP code lookup: place name(s), state/region, and coordinates.
MCP endpoint :https://ads.getlulu.dev/postal/mcp · website · measurements and detailsFree safety data sheet (SDS) lookup by product name, plus an OSHA HazCom readiness check.
MCP endpoint :https://sdsentry.0xpi.com/mcp-sds · measurements and detailsPaste a bibliography or a single reference and find out whether the papers are real.
MCP endpoint :https://citations.openkrill.app/mcp · website · measurements and detailsVerifies legal citations vs primary sources: existence, quote match, proposition support.
MCP endpoint :https://citationsafe.com/api/mcp · website · measurements and detailsBrands ChatGPT names for real buyer questions, updated every 30 minutes, with AI visibility scores.
MCP endpoint :https://api.engagemii.com/api/mcp · website · measurements and detailsDoes a cited URL exist, and does the source name what your claim names? Two answers.
MCP endpoint :https://exmachina-ai.fly.dev/verify · website · measurements and detailsReal-time fact-check, citation verification, and source-freshness for AI agents.
MCP endpoint :https://verification-mcp.atlasword.workers.dev/mcp · website · measurements and detailsCitation Style Language locale shape, body discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/csl-ok/mcp · website · measurements and detailsFree US federal court case lookup: status, judge, filings, deadlines. Then watch it for new filings.
MCP endpoint :https://casemagic.ai/mcp · website · measurements and detailsMeasure how AI assistants cite your brand. Returns measured data and ready-to-apply fixes.
MCP endpoint :https://lotus.clicon.app/mcp/ · website · measurements and detailsCloudflare Workers MCP server: citation-verifier
MCP endpoint :https://api.lazy-mac.com/citation-verifier/mcp · website · measurements and detailsSearch and read Edgepedia, a free and growing encyclopedia with citations. No key.
MCP endpoint :https://www.edgechat.ai/mcp · website · measurements and detailsSearch 250M+ research papers, citations and author profiles. Free OpenAlex account; OAuth sign-in.
MCP endpoint :https://mcp.openalex.org/mcp · website · measurements and detailsVerbatim California Title 24 and local zoning code lookup by section number, with citations.
MCP endpoint :https://gocodebook.com/api/mcp · website · measurements and detailsFree citation deduplication, JSON checks, agent discovery, shared tasks and evidence review.
MCP endpoint :https://opentaskrelay.com/mcp · website · measurements and detailsFact-check citations: resolve, match, support claims. Arithmetic rechecked. Free to start.
MCP endpoint :https://www.stipple.sh/mcp-verify · website · measurements and detailsCitation-network analysis on Scopus or OpenAlex: coupling, co-citation, lineages, bibliometrics.
Package pypi :citation-network-mcp · website · measurements and detailsCitation-backed honey producer discovery by place or varietal. Free, no auth.
MCP endpoint :https://mcp.melvea.com · measurements and details7 research navigation, thesis, note-taking and citation skill products. 6 of 8 free.
MCP endpoint :https://mcp.moltlinestudio.com/research · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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