# Services from canonicalhash-production.up.railway.app on Zero

> canonicalhash-production.up.railway.app serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/canonicalhash-production.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/canonicalhash-production.up.railway.app/health.json

## Services

- [CanonicalHash](https://www.zero.xyz/c/canonicalhash-5a1cead8/llms.txt): $0.002/call via x402. Produces a stable, deterministic SHA-256 or SHA-512 hash of any JSON payload using RFC 8785 canonicalization, suitable for idempotency keys, cache keys, and cross-runtime deduplication.
- [CanonicalHash Batch Canonicalize](https://www.zero.xyz/c/canonicalhash-batch-canonicalize-cde69130/llms.txt): $0.01/call via x402. Deterministically canonicalizes and SHA-256/512 hashes up to 1000 JSON payloads in a single call, returning an EIP-712 signed attestation for the entire batch
- [CanonicalHash Structured JSON Extraction](https://www.zero.xyz/c/canonicalhash-structured-json-extraction-8ffd0085/llms.txt): $0.005/call via x402. Extracts structured, typed fields from messy or unstructured text using an optional JSON schema, returning results with an EIP-712 signed attestation for tamper-proof verification.
- [CanonicalHash Receipt — EIP-712 Signed JSON Action Receipt](https://www.zero.xyz/c/canonicalhash-receipt-eip-712-signed-json-action-receipt-ff1e29ba/llms.txt): $0.001/call via x402. Creates a deterministic, EIP-712 signed receipt for any JSON action object, producing a canonical hash and cryptographic attestation for audit and provenance purposes.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)