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Integrations

Add a fact-check step before you publish.

Lenz connects to the tools your team already uses.

All of these on one screen, with the steps for your tool — Open the setup screen

  • n8n

    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.

    Install on n8n.io ↗Setup instructions

  • Zapier

    A native Zapier app — same structured output as n8n, no code required. One trigger and six actions: verify, assess, extract claims, grounded follow-up, whole-draft review, and citation checks.

    Add on Zapier ↗Setup instructions

  • MCP server

    Lenz is a remote MCP server at lenz.io/mcp. Add it to Claude Code, Cursor, VS Code or Codex with one command or one click, then sign in with your Lenz account. An API key works too, for CI. Claude Code Cursor Codex

    Setup instructions

  • Claude & ChatGPT

    Use Lenz from the chat you already have open. Ask it to check a claim and a quick verdict comes back in the thread; a deep check shows the sources behind it. Neither needs a key. Claude connects in one click, and one sign-in covers the desktop app, claude.ai and mobile. ChatGPT takes a few more steps, through OpenAI’s developer mode, and is in beta.

    Connect Claude ↗ChatGPT & setup

  • CLI

    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.

    CLI docs

01Build it yourself

Building a direct integration.

Lenz is a REST API with typed SDKs. Four calls and one to run them all cover everything from bulk triage to a full audit trail. Prefer raw HTTP? The endpoints are in the developer docs

02Without a workflow

In WhatsApp or in your browser.

  • WhatsApp

    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.

    Open WhatsApp ↗

  • Bookmarklet

    Drag one bookmark to your bookmarks bar, select text on any page, and get a sourced verdict.

    Get the bookmarklet

Add a fact-check step before you publish.

Try free How Lenz works

Self-serve from day one · free tier, no card