# Vaultfire AI Accountability Bond Metrics Challenge

> Vaultfire AI Accountability Bond Metrics Challenge is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

File an on-chain challenge against submitted metrics for an AI Accountability Bond by paying $0.25 USDC and posting a counter-stake with a written reason.

## Facts

- Endpoint: POST https://theloopbreaker.com/api/x402/actions/challenge-bond-metrics
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/theloopbreaker-com-397bde81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Du8gveXiA7ahg4irFJUzq

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 theloopbreaker-com-397bde81 -d '<json body>'
```

Example prompt: Challenge the metrics on Vaultfire bond 0xDEF456 on Base — I think the accuracy figures are inconsistent with on-chain evidence, so post a 1 USDC counter-stake and file the challenge with that reason.

## When to prefer this

Use this endpoint when an agent or user needs to formally dispute or challenge the accuracy of submitted metrics on a specific AI Accountability Bond on the Vaultfire Protocol. Prefer this over read-only bond lookups when the intent is to take an active on-chain governance action with financial commitment.

## Known failure modes

- Missing X-PAYMENT header returns 402 with payment instructions and accepted asset details
- Invalid bondId returns error indicating bond not found
- Insufficient counter-stake amount causes transaction preparation failure
- Unsupported chainId returns chain not supported error
- Missing required fields (reason, bondId) returns validation error

## How this service works

Challenge submitted metrics on an AI Accountability Bond. Pay $0.25 USDC, post a counter-stake, and provide a written reason. Returns an unsigned payable tx — sign in your wallet to file the challenge on-chain.

## Output

Returns an unsigned payable transaction object that the caller must sign in their wallet to record the bond metrics challenge on-chain. Includes x402 payment receipt details for $0.25 USDC on Base mainnet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/theloopbreaker-com-397bde81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from theloopbreaker.com](https://www.zero.xyz/host/theloopbreaker.com/llms.txt)