Add fact-checking to any workflow.
Lenz connects to the tools your team already uses. Use it to screen AI-written content before it goes out, flag claims in an automated workflow, or verify a fact while working in Claude or Cursor — without switching tabs. Pick the connection that fits your process.
The Lenz node is available on n8n.io. Add a fact-check step to any workflow — no HTTP configuration, just your API key. The node returns a structured verdict, score, and citations.
A native Zapier app — same structured output as n8n, no code required. Add a fact-check step to any Zap when it goes live.
Lenz is a remote MCP server at lenz.io/mcp. Point your AI
assistant at it with a Bearer header and your API key — no workflow
builder needed.
Send a claim, a headline, or a link to the Lenz number and the verdict comes back in the thread — sources included. Link it to your account from your profile and claims and quota are shared across web and WhatsApp.
The same four API primitives — extract, assess, verify, ask —
available as shell commands. pipx install "lenz-io[cli]",
paste your key once, done. Add --json to pipe into jq.
Pick one and we'll write the setup steps for it — Generate setup instructions →
Building a direct integration?
Lenz is a REST API with typed SDKs. Four primitives — extract, assess, verify, ask — cover everything from bulk triage to a full audit trail. Prefer raw HTTP? The endpoints are in the developer docs →
Typed client. client.assess(text=...) for a fast synchronous pass,
client.verify_and_wait(claim) when you want the citations
and the full trace.
Same four primitives, fully typed. client.assess({ text }) returns one
entry per atomic claim, ready to branch on before anything ships.
Resources
Add fact-checking to any workflow.
Pick your tool and we'll write the setup steps. Free tier, no card required.