6 agent-payable APIs. Every listing carries a tested call recipe - endpoint, auth shape, pricing, and known gotchas - on its detail page. fairseal.io ↗
Anchor a SHA-256 payload hash (64 lowercase hex chars) into a Merkle batch on Base mainnet. Payment: $0.001 USDC per submission (batch-settled). Returns anchor_id (202); poll status_url for Merkle proof + on-chain tx hash.
Verifiable random numbers with cryptographic epoch references. Wesolowski 2048-bit VDF epoch chain with on-chain MerkleAnchor reference. For unbiased randomness: POST /v1/rng/commit (free), then GET the reveal_url returned in the response. Do not construct reveal paths yourself.
Regex-based PII scan: emails, US/Canada (NANP) phone numbers, dash-formatted national IDs (partial coverage; alphanumeric IDs such as Taiwan format are not matched), loose passport patterns, 64-hex crypto private keys (may also flag SHA-256 hashes), credit cards, US SSNs, IPv4 addresses. Always returns sanitized text with PII redacted. Max 50,000 chars. Expect false positives and missed matches.
Verify AI agent outputs against a VEO-2 schema. Checks structural validity, SHA-256 hash integrity (if content hash is present), and optional cryptographic signature on the output (if proof.provider_signature is present). Returns a verdict with per-check details.