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io.github.Clawdio777/verity

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

Developer ToolsTypeScriptv1.0.2

VERITY — Real-Time Fact-Checking Agent

Smithery Badge

Real-time fact-checking and data freshness agent. Verifies claims, URLs, and content against live web sources. Returns structured verdicts with confidence scores, what has changed, and supporting sources.

Verdicts

VerdictMeaning
CURRENTClaim is accurate and up to date
OUTDATEDClaim was true but has since been superseded
DISPUTEDSources disagree — no clear consensus
UNVERIFIABLENo usable sources found

MCP Setup (Claude Desktop / Cursor)

{
  "mcpServers": {
    "verity": {
      "command": "npx",
      "args": ["verity-mcp"],
      "env": {
        "VERITY_PRIVATE_KEY": "0x..."
      }
    }
  }
}

Get USDC on Base at coinbase.com/wallet.

Tools

ToolDescriptionPrice
verity_verifyVerify a claim or URL against live sources0.10 USDC
verity_deep_checkMulti-angle thorough verification0.50 USDC
verity_batchVerify up to 10 claims at once0.75 USDC
verity_agentNatural language fact-checking0.10 USDC

API

POST https://verity.basechainlabs.com/api/verify
Authorization: x402 (USDC on Base)
{
  "claim": "Is GPT-4 still the most capable OpenAI model?",
  "caller_id": "my-agent-id"
}

Response:

{
  "verdict": "OUTDATED",
  "confidence": 91,
  "summary": "GPT-4 has been superseded by GPT-4o and o3.",
  "what_changed": "OpenAI released GPT-4o (May 2024) and o3 (late 2024).",
  "sources": [{ "url": "...", "title": "...", "published_date": "2025-01", "supports": "CONTRADICTS" }],
  "checked_at": "2026-05-11T09:00:00Z",
  "recommendation": "Update any content referencing GPT-4 as the most capable model."
}

Persistent Memory

Pass a consistent caller_id on every call. VERITY remembers topics you've checked, domains you monitor, and previous results — no re-sending context.

A2A Agent Card

GET https://verity.basechainlabs.com/api/agent?agent-card=true

Built by BaseChain Labs

Installation

Source-derived launch command. Check the maintainer’s required arguments and credentials before running:

bash
npx -y verity-mcp

Set up in your AI client

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json
{
  "mcpServers": {
    "io-github-clawdio777-verity": {
      "command": "npx",
      "args": [
        "-y",
        "verity-mcp"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Package

verity-mcpnpm

Compatible MCP Clients

io.github.Clawdio777/verity works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

  • Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.
  • Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.
  • VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.
  • Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.
  • Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

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