Koskamo

Lenz MCP

A remote MCP server hosted by Lenz that enables AI coding assistants to fact-check claims in text or drafts. It provides tools for quick verdicts, deep verification with sources, citation checking, and usage monitoring, integrating directly into workflows via Streamable HTTP.

Visit Lenz

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

Lenz MCP logo, by LenzVendor evidenceStreamable HTTPOAuth sign-inEndpoint checked 2026-11-07Operated by Lenz
You need:Your Lenz account, or an API key
MCP endpoint (Streamable HTTP)
https://lenz.io/mcp
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to lenz.io ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Fact-check claims in a draft or answer
  • Verify claims with sourced deep checks
  • Check if cited sources support statements
  • Monitor remaining credits and plan usage

Source and maintenance

Vendor evidenceRegistry 1.1.1
mcp-registry: io.lenz/fact-check@1.1.1Source repositoryProject website
Maintenance checked

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
102 ms
95th percentile latency
102 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 102 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http lenz-mcp https://lenz.io/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add lenz-mcp --url https://lenz.io/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable lenz-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "lenz-mcp": {
      "url": "https://lenz.io/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "lenz-mcp": {
      "type": "streamableHttp",
      "url": "https://lenz.io/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start lenz-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "lenz-mcp": {
      "type": "http",
      "url": "https://lenz.io/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http lenz-mcp https://lenz.io/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://lenz.io/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "lenz-mcp": {
      "serverUrl": "https://lenz.io/mcp"
    }
  }
}

Let your agent find its tools

Find servers like Lenz MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

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Do you run Lenz MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

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