Verity
Let your coding agent verify claims against live sources with structured verdicts before you ship copy, docs, or investor narratives.
Overview
Verity is an MCP server for the Idea phase that verifies claims against live sources and returns structured fact-check verdicts.
What is this MCP server?
- Real-time fact-checking MCP with structured verdicts tied to live sources
- stdio npm package verity-mcp (v1.0.2) for Claude Code–style agent hosts
- Per-call x402 USDC pricing on Base: 0.10 (verify), 0.50 (deep-check), 0.75 (batch)
- Wallet-signed payments via VERITY_PRIVATE_KEY—no separate OAuth app setup
- Outputs machine-readable verdicts agents can cite in plans and content drafts
- Server version 1.0.2; npm identifier verity-mcp; transport stdio
- Per-call USDC on Base: 0.10 verify, 0.50 deep-check, 0.75 batch
- Requires VERITY_PRIVATE_KEY (0x…) for x402 payment signing
What problem does it solve?
Agents sound authoritative while repeating outdated or false claims, and manual fact-checking breaks your flow before you publish.
Who is it for?
Indie builders who publish content or pitch decks and want the agent to run paid, on-chain–settled verification calls during research and pre-launch edits.
Skip if: Teams that need free offline verification, legal-grade audit trails, or fact-checking without funding a Base wallet with USDC.
What do I get? / Deliverables
Your agent can request live-source checks with clear verdict objects so drafts and plans cite reality instead of speculation.
- Structured verdict payloads for single claims, deep checks, or batches
- Agent-ready citations grounded in live source checks
- Repeatable verification workflow inside the IDE agent loop
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Journey fit
Fact-checking belongs on the research shelf because solo builders use it while validating stories, competitors, and assumptions before they commit to build or launch. Research is where unverified claims create the most rework; Verity targets live-source verification during discovery, not post-launch analytics.
How it compares
Live fact-check MCP with micropayments, not a general web-search or RAG document skill.
Common Questions / FAQ
Who is Verity for?
Verity is for solo builders and agent workflows that need structured, source-backed verdicts on specific claims before shipping messaging or research outputs.
When should I use Verity?
Use Verity when validating competitor stats, launch copy, thread hooks, or README assertions that must hold up against current public sources.
How do I add Verity to my agent?
Register the stdio npm server verity-mcp in your MCP config, set VERITY_PRIVATE_KEY (Base wallet with USDC), and expose the verify, deep-check, and batch tools to your host.