# Vaultfire Protocol Generic On-Chain Contract Read

> Vaultfire Protocol Generic On-Chain Contract Read is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.010000/call, status unknown (last checked 2026-10-27).

Executes a read-only (view/pure) call against any of the 134 Vaultfire Protocol smart contracts across Base, Avalanche, Arbitrum, and Polygon, returning the decoded result with block provenance.

## Facts

- Endpoint: POST https://theloopbreaker.com/api/x402/contract-call?utm_source=zero.xyz
- Price: $0.010000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/theloopbreaker-com-67f1491d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UAffDl3HLPHnb6dkUuS1f

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-67f1491d -d '<json body>'
```

Example prompt: Call the getAgentScore function on the Vaultfire ReputationRegistry contract on Base, passing the address 0x0000000000000000000000000000000000000001, and give me the decoded result with block info.

## When to prefer this

Use this endpoint when you need to read on-chain state from any of the 134 Vaultfire Protocol contracts across Base, Avalanche, Arbitrum, or Polygon and want a single unified interface that handles ABI lookup and decoding automatically. Prefer this over raw RPC calls when you don't want to manage ABIs or multi-chain RPC endpoints yourself. It's ideal for agent workflows that need to inspect Vaultfire reputation, bond, governance, or registry data programmatically.

## Known failure modes

- Contract name not found in the 134-contract Vaultfire registry — returns an error identifying unknown contract
- Function name does not exist on the specified contract — returns ABI mismatch or revert error
- Wrong argument types or count passed — returns decoding or revert error
- Chain not supported (only Base, Avalanche, Arbitrum, Polygon) — returns unsupported chain error
- Missing X-PAYMENT header — returns 402 with payment requirements
- RPC node unavailable for the target chain — returns upstream connectivity error
- Function is not view/pure (write function attempted) — returns rejection since only read-only calls are supported

## How this service works

Generic on-chain read against any of the 134 Vaultfire Protocol contracts across Base, Avalanche, Arbitrum, and Polygon. Pass { chain, contract (name or address), function, args } and receive the decoded return value plus block provenance. Read-only (view/pure) calls only.

## Output

Returns the decoded return value of the called contract function (e.g. a uint, address, struct, or array), along with block provenance including block number and chain identifier, wrapped in a JSON response.

## 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-67f1491d/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)