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Verity MCP Server

local only

Verity runs on your own machine — the client starts it, so there is no endpoint to ping. 48 installs a week from npm. Last commit 11 Sep 2026.

Real-time fact-checking MCP. Verifies claims against live sources with structured verdicts.

Installs per day peak 25 · avg 9 · +8% w/w
a month agotoday
48
Installs / week
npm · verity-mcp
0
Stars
5 open issues
11 Sep 2026
Last commit
0 releases in 90 days
MIT
License
TypeScript

What the code does

We read the source, 21 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Page executes code built at runtime public/index.html:343
          result.innerHTML = html;

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add verity -- npx -y verity-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "verity": {
      "args": [
        "-y",
        "verity-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.verity]
command = "npx"
args = ["-y", "verity-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "verity": {
      "args": [
        "-y",
        "verity-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "verity": {
      "args": [
        "-y",
        "verity-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: VERITY_PRIVATE_KEY (Base wallet private key (0x...) — used to sign x402 payments in USDC on Base. Per-call: 0.10 USDC (verify), 0.50 USDC (deep-check), 0.75 USDC (batch).). The author declared them in the registry entry; get the values from the project itself.

Alternatives to Verity

same job, measured the same way
D
Trinity Research
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Fact-check claims against live web sources: verdict, consensus, cited sources, PII redaction.

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C
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N
Verify MCP
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Sub-cent factual claim verification against live data sources.

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D
Consistency Gate
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Check claims against a fact-store: consistent, contradicts, or unverifiable — with a receipt.

3 tools answering
Lenz Fact-Check
by lenz

Fact-check claims against independent sources — fast verdict or deep multi-step investigation.

answering
VerifyAPI — fact-check with signed receipts
by kythekitty

Fact-check any claim with live web sources. Ed25519-signed receipts. Catches hallucinations.

307 installs/wk local only
Fidenta Verify
by noevant

Independent fact-checking for AI answers: a verdict and sources for every claim.

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Kage
by kage-core

Verified memory for coding agents: claims cited against code, stale withheld, savings receipts.

216 installs/wk local only

Verity — questions

Answers built from our own checks of this server.

Why is there no uptime for Verity?
Verity runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package verity-mcp was installed 48 times last week.
How do I connect Verity?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls verity-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Verity?
The npm package verity-mcp was installed 48 times in the last week. Week over week that is +8%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Verity open source?
Yes — it is published under the MIT licence, written in TypeScript, 0 stars on GitHub and 5 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.