# Phantom API — Boba Network Gas Estimator

> Phantom API — Boba Network Gas Estimator is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Estimates gas costs for a transaction on the Boba Network before submission

## Facts

- Endpoint: POST https://phantom-api-omega.vercel.app/api/boba/gas/estimate
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/phantom-api-boba-network-gas-estimator-645526bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zpUcvc6Srl6KGIFLJu3BK

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 phantom-api-boba-network-gas-estimator-645526bb -d '<json body>'
```

Example prompt: Before I send this contract call on Boba Network — to address 0xAbC...123 with calldata 0xd46e8dd6... and 0.05 ETH value from my wallet 0xDEF...456 — can you estimate the gas it'll use?

## When to prefer this

Use this endpoint when you need a fast, cheap ($0.01 USDC) gas estimate specifically for Boba Network (an Ethereum L2 optimistic rollup) before submitting a transaction. Prefer this over on-chain simulation if you want a pre-flight cost check without broadcasting. Not suitable for other EVM chains — use chain-specific sibling endpoints for Ethereum mainnet, Polygon, etc.

## Known failure modes

- Invalid or malformed address in 'to' or 'from' fields returns a 400-level error
- Malformed calldata hex string causes estimation failure
- Boba Network node unavailability leads to timeout or 503 error
- Missing required fields (e.g. no 'to') may return a validation error
- Transactions that would revert on-chain may fail estimation with a revert reason

## How this service works

Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.

## Output

Returns an estimated gas unit count (and potentially an estimated fee) for the specified transaction on Boba Network, without broadcasting the transaction to the chain. Allows callers to plan transaction budgets before execution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "to": {
   "type": "string"
  },
  "data": {
   "type": "string"
  },
  "from": {
   "type": "string"
  },
  "value": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/phantom-api-boba-network-gas-estimator-645526bb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phantom-api-omega.vercel.app](https://www.zero.xyz/host/phantom-api-omega.vercel.app/llms.txt)