# Rubric Protocol Attested Work Record

> Rubric Protocol Attested Work Record is a paid API for AI agents from rubric-protocol.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Creates a post-quantum-signed, Hedera-anchored attestation of who or what performed a specific action, its outcome, and any deviation from the original plan — forming a tamper-evident operational log entry.

## Facts

- Endpoint: POST https://rubric-protocol.com/v1/x402/attested-work-record
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rubric-protocol-attested-work-record-9dfba014
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z2AWHPTmZo_GuA3aAallS

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

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability rubric-protocol-attested-work-record-9dfba014 -d '<json body>'
```

Example prompt: Seal an attested work record for the inventory audit task just completed by agent-7 via a POST action — the outcome was successful with a 3-unit count discrepancy deviation from plan, and I need it ML-DSA-65 signed and anchored to Hedera for the incident log.

## When to prefer this

Choose this endpoint when you need a cryptographically non-repudiable, independently verifiable record of who or what performed an action — especially in mixed human/AI/robot crews where accountability is legally or operationally critical. It is the right choice for incident investigations, insurance disputes, compliance audits, or any workflow where you need a post-quantum-resistant signature (ML-DSA-65) and a blockchain anchor (Hedera HCS) rather than a simple database log entry. Prefer it over generic logging services when third-party verifiability without trusting the log custodian is a hard requirement.

## Known failure modes

- Missing required actor or action fields returns a 400 validation error
- Malformed input schema (wrong HTTP method or type) returns a 422 unprocessable entity
- Payment not settled via x402 protocol returns a 402 Payment Required
- Hedera HCS congestion or unavailability may delay anchoring and return a 503
- Signature generation failure returns a 500 internal server error
- Duplicate submission of an identical record is not deduplicated — each call produces a new unique attestation

## How this service works

Attested work record for mixed human/robot/agent crews: seal who (or what) did which action, the outcome, and any deviat

## Output

Returns a signed attestation receipt containing the ML-DSA-65 cryptographic signature over the work record, a Hedera HCS topic message ID anchoring the record to mainnet, a timestamp, a unique record identifier, and a verifiable payload capturing the actor(s), action, outcome, and any plan deviation — independently verifiable by any third party without trusting the issuing service.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "format": {
     "type": "string"
    },
    "example": {}
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rubric-protocol-attested-work-record-9dfba014/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rubric-protocol.com](https://www.zero.xyz/host/rubric-protocol.com/llms.txt)