# Services from api.satledger.org on Zero

> api.satledger.org serves 2 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/api.satledger.org
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.satledger.org/health.json

## Services

- [SatLedger RFC 3161 Timestamp Receipt](https://www.zero.xyz/c/satledger-rfc-3161-timestamp-receipt-9b4d5105/llms.txt): $0.05/call via x402. Issues a single RFC 3161 cryptographic timestamp receipt anchored to a SHA-256 digest you provide, with no account or API key required.
- [SatLedger Workspace Provisioner](https://www.zero.xyz/c/satledger-workspace-provisioner-6f029faa/llms.txt): $0.5/call via x402. Provisions a SatLedger workspace and recording units, returning an API key for authenticated event logging and anchoring

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)