The real catalog of tools for AI agents

Search and read short factual claims with cited sources, a verification tier and a signature.

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

Verify claims with web evidence. Returns sources and verdict. x402 micropayment.

Free fact-checks, papers, source vetting, plus verified AI pricing, comparisons, guides, and tools.

Verifiable fact-checking: verdict, confidence, sources, and a tamper-evident certificate.

Force evidence-gated, tiered claim reporting (FACT/INFERENCE/SPECULATION). No-LLM.

Real-time fact-check, citation verification, and source-freshness for AI agents.

Fact-check citations: resolve, match, support claims. Arithmetic rechecked. Free to start.

Useless Facts random facts.

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

Unlock the power of food transparency with our Open Food Facts MCP server. Easily look up any food

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

Human intelligence API — AI agents verify facts with human domain experts via MCP

Use this MCP server to Open Food Facts product, ingredient, allergen, and nutrition lookup....

Software end-of-life dates, open-source licenses, browser support for web features and RFC facts.

Verified cloud storage provider facts: prices, storage, encryption. Dated and source-cited.

Check whether a real-world fact can be verified before an agent acts on it. Free, no auth.

Verify official facts with Bitcoin-anchored proof. 180+ signals, x402 pay-per-call.

Deterministic fact verification for AI agents — checksums & curated data, not guesses.

Search food products, ingredients, nutrition, brands, and categories. No API key. By UnClick.