Google tells you what exists. Faceabot tells you what holds up.
Retractions / research-integrity MCP.
MCP endpoint :https://gateway.pipeworx.io/retractions/mcp · website · measurements and detailsOpen watchdog for retracted & problematic citations: Retraction Watch, OpenAlex, Crossref.
Package pypi :retractguard · website · measurements and detailsAuditable memory for AI agents: provenance, cascade retraction, conflict refusal
Package cargo :factum-mcp · website · measurements and detailsSigned citation-integrity reports + retraction-checked evidence packs, paid per call via x402/USDC.
MCP endpoint :https://aep-api.fly.dev/mcp · website · measurements and detailsCatch AI-fabricated citations (real DOI + fake title). Retraction, open-access, 10,000+ CSL styles.
MCP endpoint :https://scholar-sidekick.com/api/mcp · 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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