# Vaultfire BondInsurancePool Contribute Transaction Preparer

> Vaultfire BondInsurancePool Contribute Transaction Preparer is a paid API for AI agents from theloopbreaker.com, paid per call via x402, $0.050000/call, status unknown (last checked 2026-09-15).

Prepares an unsigned payable transaction for contributing to the Vaultfire BondInsurancePool smart contract, ready for wallet signing.

## Facts

- Endpoint: POST https://theloopbreaker.com/api/x402/actions/contribute-insurance
- Price: $0.050000/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-871aa1ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tA3bTlw6HbRSak-tGIeOW

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-871aa1ec -d '<json body>'
```

Example prompt: Prepare an unsigned transaction for me to contribute 0.5 ETH to the Vaultfire BondInsurancePool on Base mainnet from my wallet address 0xAbC...123 so I can sign and broadcast it myself.

## When to prefer this

Use this endpoint when you need to programmatically prepare a contribute() call against the Vaultfire BondInsurancePool contract without exposing private keys — the endpoint handles contract ABI encoding, gas estimation, and chain routing across Base/Avalanche/Arbitrum, returning a wallet-signable unsigned transaction.

## Known failure modes

- Invalid or missing contributor address returns 400 with address validation error
- Contribution amount below pool minimum returns 400 with minimum threshold details
- Unsupported chain ID returns 400 listing supported mainnet chains
- Contract registry lookup failure returns 503 if the 134-contract registry is unreachable
- Payment of $0.20 USDC x402 header missing or invalid returns 402 payment required
- Pool paused or at capacity returns 400 with pool state reason

## How this service works

Tx-prepare for VaultfireBondInsurancePool.contribute() — payable. Returns unsigned transaction; caller signs in wallet.

## Output

Returns an unsigned transaction object including encoded calldata for VaultfireBondInsurancePool.contribute(), the target contract address, value field, gas estimate, and chain ID — ready to be signed by the caller's wallet and broadcast to the network.

## 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-871aa1ec/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)