# The Stall Gas Estimate — IntuiTek x402 Marketplace

> The Stall Gas Estimate — IntuiTek x402 Marketplace is a paid API for AI agents from the-stall.intuitek.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Estimates blockchain gas costs for transactions, payable per-call in USDC on Base mainnet with no API key required.

## Facts

- Endpoint: GET https://the-stall.intuitek.ai/cap/gas-estimate
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/the-stall-gas-estimate-intuitek-x402-marketplace-f5dfe8cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NaATyklqVJVHvAj8piSz2

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 the-stall-gas-estimate-intuitek-x402-marketplace-f5dfe8cd
```

Example prompt: Can you estimate the gas cost for my transaction on Base mainnet — here are the transaction properties: {to, value, data}?

## When to prefer this

Use this endpoint when you need a quick, pay-per-use gas estimate for Base mainnet transactions without setting up accounts or API keys — ideal for AI agents that need on-demand cost prediction before executing blockchain operations.

## Known failure modes

- Invalid or missing transaction properties returns an error or empty estimate
- Payment not received (402) if USDC payment on Base is not included
- Malformed input schema results in a 400 or schema validation error
- Network congestion or upstream provider unavailability may cause stale or failed estimates

## How this service works

Multi-chain gas price oracle: fast/standard/slow Gwei + USD cost for a transfer. Chains: ethereum, base, polygon, arbitrum, bsc. Seam: x402node/myceliasignal gas feeds.

## Output

Returns an estimated gas cost (in gas units or fee amount) for the given transaction properties, enabling the caller to predict transaction costs before submission on Base mainnet.

## Example request

```json
{
 "properties": "to: 0x1234567890123456789012345678901234567890, value: 1000000000000000000, data: 0x"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/the-stall-gas-estimate-intuitek-x402-marketplace-f5dfe8cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from the-stall.intuitek.ai](https://www.zero.xyz/host/the-stall.intuitek.ai/llms.txt)