# GGWP API Hub – Gas Estimate

> GGWP API Hub – Gas Estimate is a paid API for AI agents from ggwp-ten.vercel.app, paid per call via x402, $0.105822/call, status unknown (last checked 2026-09-15).

Estimates blockchain gas fees for transactions on the Base chain via a pay-per-call API.

## Facts

- Endpoint: POST https://ggwp-ten.vercel.app/api/gas-estimate
- Price: $0.105822/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ggwp-api-hub-gas-estimate-0bd59d78
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4PIc3kJHxzd0gYBhgOOrL

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 ggwp-api-hub-gas-estimate-0bd59d78 -d '<json body>'
```

Example prompt: Can you estimate how much gas my transaction will cost on the Base chain before I submit it?

## When to prefer this

Use this endpoint when you need a quick gas fee estimate for Base chain transactions before committing to execution, especially within a pay-per-call x402 workflow where cost predictability matters. Prefer this over on-chain RPC calls when you want a simple REST API interface without managing a blockchain node.

## Known failure modes

- Invalid or malformed transaction input returns an error response
- Missing required transaction fields result in estimation failure
- Network congestion or RPC unavailability may cause timeouts or stale estimates
- Incorrect chain ID or unsupported transaction type may return an error

## How this service works

All-in-one API hub: Social Media, Jobs, Finance, Crypto, and Tools. Pay-per-call with x402 protocol on Base chain.

## Output

Returns an estimated gas cost or fee data object for a transaction on the Base blockchain, including estimated gas units and/or cost in ETH or USDC terms.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ggwp-api-hub-gas-estimate-0bd59d78/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ggwp-ten.vercel.app](https://www.zero.xyz/host/ggwp-ten.vercel.app/llms.txt)