Evidence verification APIs

ProofForge

Pay-per-call APIs that measure whether evidence supports a claim: support, contradiction, corroboration, freshness, provenance and completeness, returned as machine-readable results with methods and limits. Live on x402 agent marketplaces.

Capabilities

Claim check: does the supplied evidence support the claim?
Contradiction scan: does any evidence explicitly contradict it?
Source corroboration and multi-source proof: do independent sources agree?
Source freshness: is the evidence recent enough for your window?
Provenance trace and evidence completeness: where evidence came from and what is missing
Artifact integrity and change verification for hashes, versions and before/after observations
Evidence packs that bundle every check with methods, inputs and limitations

Scope

ProofForge evaluates only the evidence you supply, using disclosed methods. It does not establish objective truth, investigate facts outside that evidence, or provide legal or regulatory advice. A finding of no contradiction does not prove a claim true.

Licensing

APIEnterpriseOEM

Pricing is provided by written proposal based on your deployment, usage and licensing model.

Request a proposal