# Otto X402 Router — Feedback & Refunds

> Otto X402 Router — Feedback & Refunds is a paid API for AI agents from openrouter-production-d0d6.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Rate a paid Otto Router call by its payment tx_hash and request a refund of the $0.001 fee plus any refundable amount back to the original payer

## Facts

- Endpoint: POST https://openrouter-production-d0d6.up.railway.app/feedback
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/otto-x402-router-feedback-refunds-231926be
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vIRM5xIODZcrwV5tl_10d

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 otto-x402-router-feedback-refunds-231926be -d '<json body>'
```

Example prompt: I want to rate the Otto Router call I just paid for — my payment tx_hash is 0xabc123def456 — it gave a bad result so please submit feedback and request the refund of my $0.001 fee.

## When to prefer this

Use this endpoint when you have already made a paid call to the Otto X402 Router (identified by a payment tx_hash) and want to submit feedback on the quality of that call or request a refund of the $0.001 fee and any refundable amount back to your wallet.

## Known failure modes

- Invalid or unrecognized tx_hash — refund denied
- Refund requested by non-original payer — rejected
- Refund amount exceeds original payment — capped or denied
- Duplicate feedback submission on same tx_hash
- Payment tx_hash not associated with an Otto Router call

## How this service works

Otto X402 Router — Feedback & Refunds. Rate a paid Router call by its payment tx_hash. An approved refund returns this $0.001 fee PLUS the refundable amount, only to the original payer, never above what you paid Otto.

## Output

An approved refund response returning the $0.001 call fee plus any additional refundable amount in USDC, sent only to the original payer's wallet address, capped at what they originally paid Otto.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/otto-x402-router-feedback-refunds-231926be/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openrouter-production-d0d6.up.railway.app](https://www.zero.xyz/host/openrouter-production-d0d6.up.railway.app/llms.txt)