# Synapse API — Ronin Network Gas Estimator

> Synapse API — Ronin Network Gas Estimator is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Estimates gas costs for a transaction on the Ronin blockchain network given sender, recipient, value, and calldata

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/ronin/gas/estimate
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-ronin-network-gas-estimator-f043c966
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zlxg66H2bN_0aRDDXTkf5

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 synapse-api-ronin-network-gas-estimator-f043c966 -d '<json body>'
```

Example prompt: Estimate the gas cost for a Ronin transaction from 0xAbC...123 to 0xDeF...456 with a value of 1000000000000000000 wei and calldata 0xa9059cbb000...

## When to prefer this

Use this endpoint when you need a gas estimate specifically for the Ronin blockchain (the Axie Infinity / Sky Mavis sidechain) before submitting a transaction. Prefer this over generic Ethereum gas estimators when working with Ronin-native tokens, NFTs, or smart contracts deployed on Ronin.

## Known failure modes

- Invalid address format for 'to', 'from' fields — returns error
- Malformed or non-hex calldata in 'data' field — returns parse error
- Ronin RPC node unavailable or rate-limited — returns 5xx error
- Transaction would revert on-chain — may return execution revert error
- Missing required fields returns validation error

## How this service works

High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.

## Output

Returns a gas estimate (in gas units) for the described Ronin network transaction, allowing callers to pre-calculate fees before broadcasting a real transaction on-chain.

## 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/synapse-api-ronin-network-gas-estimator-f043c966/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)