# Vaultfire ERC-8004 Submit Validation Result

> Vaultfire ERC-8004 Submit Validation Result is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Submit a staked validator's validation result to the ERC-8004 Validation Registry on-chain, with optional zk proof bytes, for $0.25 USDC.

## Facts

- Endpoint: POST https://theloopbreaker.com/api/x402/actions/submit-validation
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/theloopbreaker-com-b893906e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_O9JTlaRByZRSq2npolEXx

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-b893906e -d '<json body>'
```

Example prompt: Submit my validation result for agent 0xABC123 to the ERC-8004 Validation Registry on Vaultfire — I'm already staked as a validator, the result is 'approved', and I want to include my zk proof bytes.

## When to prefer this

Use this endpoint when you are a staked validator in the Vaultfire / ERC-8004 ecosystem and need to write a validation result (with optional zk proof) to the on-chain Validation Registry. Prefer this over read-only trust profile lookups when you need to actively record a new attestation rather than query existing data.

## Known failure modes

- Validator not staked — call will fail if the caller has not previously called stakeAsValidator
- Insufficient USDC balance — payment of $0.25 USDC must be available in the caller's wallet
- Invalid zk proof bytes — malformed proof data will cause on-chain rejection
- Wrong chain — contract only live on supported Vaultfire mainnet chains (Base, Avalanche, Arbitrum)
- Duplicate submission — submitting the same validation result twice may be rejected by the registry

## How this service works

Submit a validation result on the ERC-8004 Validation Registry as a staked validator. Pay $0.25 USDC, sign in your wallet — must already be staked via stakeAsValidator. Includes optional zk proof bytes.

## Output

Returns an unsigned or signed transaction payload that records the validator's result on the ERC-8004 Validation Registry smart contract, confirming the on-chain attestation was prepared or submitted, along with a signed x402 payment receipt.

## 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-b893906e/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)