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.
We read the source, 21 h ago · rules 3dff92dd89df
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.
result.innerHTML = html;
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
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.
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.
claude mcp add verity -- npx -y verity-mcp
{
"mcpServers": {
"verity": {
"args": [
"-y",
"verity-mcp"
],
"command": "npx"
}
}
}
[mcp_servers.verity]
command = "npx"
args = ["-y", "verity-mcp"]
{
"mcpServers": {
"verity": {
"args": [
"-y",
"verity-mcp"
],
"command": "npx"
}
}
}
{
"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.
Fact-check claims against live web sources: verdict, consensus, cited sources, PII redaction.
Sub-cent factual claim verification against live data sources.
Sub-cent factual claim verification against live data sources.
Check claims against a fact-store: consistent, contradicts, or unverifiable — with a receipt.
Fact-check claims against independent sources — fast verdict or deep multi-step investigation.
Fact-check any claim with live web sources. Ed25519-signed receipts. Catches hallucinations.
Independent fact-checking for AI answers: a verdict and sources for every claim.
Verified memory for coding agents: claims cited against code, stale withheld, savings receipts.
Answers built from our own checks of this server.