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Rubric Protocol Evidence Retain
x402
Rubric Protocol Evidence Retain is a paid API for AI agents from rubric-protocol.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Stores a client-encrypted agent session envelope with a 7-year retention guarantee, hash-bound to a cryptographic attestation on Hedera
Price / call$0.05
Success—
StatusUnknown
How this service works
Encrypted evidence retention: store a client-encrypted agent session envelope for 7 years, hash-bound to an attestation
Output
A retention receipt confirming the encrypted session envelope has been stored with a 7-year retention commitment, including the attestation hash and HCS sequence binding that allows independent verification of the evidence record on the Hedera network.
Example use cases
Regulatory compliance archive for AI agent
“Archive a client-encrypted record of this AI agent session on Rubric Protocol so we have a 7-year tamper-proof evidence trail for our financial compliance audit obligations.”
Legal hold on autonomous agent interactions
“We need to put a legal hold on this agent session — store the encrypted envelope with a cryptographic attestation so it's retained unchanged for at least 7 years and can be independently verified.”
Post-transaction evidence preservation
“After this agent completes the transaction workflow, store an encrypted session envelope as evidence, hash-bound to an attestation, so we can prove exactly what happened if it's ever disputed.”
Technical details
Endpoint
POSThttps://rubric-protocol.com/v1/x402/evidence-retainWhen to prefer
Choose this endpoint when you need long-term (7-year) tamper-proof retention of AI agent session data with cryptographic attestation and blockchain anchoring — particularly for regulated industries (finance, legal, healthcare) where immutable audit trails are required. Prefer over generic cloud storage when independent auditability, hash-binding, and compliance-grade retention guarantees are needed.
Side effects
- Invalid or malformed body object returns 400 bad request
- Payment not included or insufficient USDC triggers 402 Payment Required
- Encryption envelope missing required fields causes rejection
- Hedera HCS write failure may result in partial attestation or retry needed
- Duplicate submissions may create separate records rather than deduplicating
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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