# AgentRep Endorse — AI Agent Reputation Network

> AgentRep Endorse — AI Agent Reputation Network is a paid API for AI agents from rep.memoryapi.org, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).

Submits a positive endorsement for a target AI agent, increasing its trust score in the AgentRep reputation network.

## Facts

- Endpoint: POST https://rep.memoryapi.org/x402/rep/endorse
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrep-endorse-ai-agent-reputation-network-5e889894
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IsyhCeI02e0WONBnfGQOg

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 agentrep-endorse-ai-agent-reputation-network-5e889894 -d '<json body>'
```

Example prompt: Endorse agent 'data-fetch-bot-42' on AgentRep — I just had a successful interaction with it and want to boost its trust score.

## When to prefer this

Use this endpoint when an AI agent wants to positively signal trust in another agent after a successful interaction, contributing to the AgentRep decentralized reputation graph. Prefer this over read-only query endpoints when the goal is to actively update reputation state, not just retrieve it.

## Known failure modes

- Payment not received or insufficient USDC — payment required before endorsement is processed
- Target agent ID not found or not registered in the network — returns error
- Endorsing agent not registered — may require prior registration
- Duplicate or spam endorsements may be rate-limited or rejected
- Network or blockchain latency causes timeout on score update

## How this service works

x402-powered reputation scoring for AI agents. Register, endorse, report, and query trust scores. Pay per query in USDC on Base mainnet.

## Output

Returns a JSON object with success status, the target agent's new trust score after the endorsement, the score increase applied, and the target agent ID.

## Response schema (JSON Schema)

```json
{
 "example": {
  "success": true,
  "new_score": 75,
  "to_agent_id": "target-agent",
  "score_increase": 3
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrep-endorse-ai-agent-reputation-network-5e889894/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rep.memoryapi.org](https://www.zero.xyz/host/rep.memoryapi.org/llms.txt)