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MCP verified MIT Self-run

Fact Verification MCP

mcp-foundrynet-fact-check-mcp · by FoundryNet

Verify claims with verdict, confidence & cited sources; batch verify, source checks, daily brief.

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Install

$ agentstack add mcp-foundrynet-fact-check-mcp

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v1.0.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v1.0.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

Verified badge

Passed review? Show it. Paste this badge into your README, it links to the public security report.

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[![AgentStack Verified](https://agentstack.voostack.com/badges/verified.svg)](https://agentstack.voostack.com/security/report/mcp-foundrynet-fact-check-mcp)

Reliability & compatibility

✓ Security review passed
0 installs to date
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● 1mo ago

Declared compatibility

Claude CodeClaude DesktopCursorWindsurf

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.

How agent discovery & health will work →
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About

Fact Verification MCP

Fact verification for AI agents — give it a claim, get a verdict (supported / disputed / unverifiable) with a 0-100 confidence and cited sources. It classifies each claim's domain and cross-references the FoundryNet Data Network plus a general web search.

> Part of the FoundryNet Data Network. Attest your agent's verification results > with MINT Protocol. See also: > financial-signals-mcp, cyber-intel-mcp, patent-intel-mcp, > gov-contracts-mcp, compliance-mcp, brand-intel-mcp, > weather-intel-mcp, academic-intel-mcp, oss-intel-mcp, > social-intel-mcp.

Connect

  • MCP endpoint (Streamable HTTP): https://fact-check-mcp-production.up.railway.app/mcp
  • Registry: io.github.FoundryNet/fact-check-mcp
  • Agent card: https://fact-check-mcp-production.up.railway.app/.well-known/agent-card.json

Claude Desktop / Cursor / Claude Code

claude mcp add --transport http fact-check https://fact-check-mcp-production.up.railway.app/mcp
{ "mcpServers": { "fact-check": { "url": "https://fact-check-mcp-production.up.railway.app/mcp" } } }

Tools

| Tool | Price | What it does | |---|---|---| | verify_claim | $0.02 | Verify a claim → verdict, confidence, cited sources, explanation | | batch_verify | $0.01/claim (min $0.05) | Verify many claims in one call | | source_check | $0.01 | Assess a source URL — domain age (RDAP), trust signals, bias indicators | | daily_brief | $5 | Curated daily brief — top disputed/most-verified claims, trending topics | | mint_info | free | FoundryNet Data Network + MINT Protocol |

Free tier: 10 verifications/day per agent. Then x402: the tool returns an HTTP-402 with a Solana USDC payment memo — pay it, re-call with the same args plus payment_tx=. An Authorization: Bearer fnet_… key bypasses the paywall.

How it works

Each claim is classified by domain and cross-referenced against the most relevant FoundryNet data source and a general web search:

  • company claims → brand-intel-mcp
  • finance claims → financial-signals-mcp
  • patents claims → patent-intel-mcp
  • regulation claims → compliance-mcp

The verdict is synthesized from source agreement and returned with the citations that drove it. Results are cached for 24h (keyed by a normalized-claim hash) and carry a MINT provenance attestation so a buyer can verify the result was produced by this server, unaltered.

> The general web-search backend needs a WEB_SEARCH_API_KEY (Brave Search API). > Without it, claims with no FoundryNet corroboration return unverifiable with a > note rather than a guess.

Sources

On demand: a general web search (Brave Search API) + the FoundryNet Data Network sibling servers (called over their public MCP endpoints). Source-credibility checks use keyless RDAP for domain age. Cached in a standalone Supabase project.

Discovery

MCP registry: io.github.FoundryNet/fact-check-mcp

Built by FoundryNet · hello@foundrynet.io

Live network activity

Live feed: mint.foundrynet.io/feed Real-time verified work across 13 servers and autonomous agents, anchored on Solana via MINT Protocol.

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v1.0.0 Imported from the upstream source.

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