canonicalhash

JSON canonicalization — canonicalize structured data with RFC 8785 JCS; return canonical JSON text, UTF-8 byte length, and SHA-256 hash for integrity checks, signature preparation, and deduplication. Includes an EIP-712 signed attestation. Use when an agent needs an idempotency key, cache key, dedup hash, or verifiable commitment. $0.002 per call. Free verification at POST /v1/verify.

Batch canonicalize up to 1000 JSON payloads in one call — one signature, one payment, one attestation. Same RFC 8785 canonicalization as /v1/canonicalize. Use when an agent needs to fingerprint a dataset, dedup a batch of records, or hash many inputs in a single round-trip. $0.01 flat per call (about $0.00001 per item). Free verification at POST /v1/verify.

Verifiable action receipt for AI agents. Submit any JSON action object and get back an EIP-712 signed receipt proving the action occurred at a specific time. Tamper-evident, non-repudiable by the service, and verifiable by anyone at POST /v1/verify. Use when an agent needs an audit trail, compliance record, or provenance proof. $0.001 per receipt.

Extract structured JSON from messy text. Deterministic Tier 1 (regex, exact) handles labeled inputs in under 50ms; Needle 3 model fallback handles free-form text. Use when an agent needs to turn emails, logs, tickets, or notes into fields it can act on. $0.005 per call. No charge on extraction failure. Free verification at POST /v1/verify.