# x402node Gas Fee Forecast

> x402node Gas Fee Forecast is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-27).

Analyzes short-term base fee trends on Base or Ethereum to advise whether to send a transaction now or wait for lower fees

## Facts

- Endpoint: GET https://api.x402node.dev/market/gas-forecast?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402node-gas-fee-forecast-48d3a5e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xmO4BeNywXEtzcM2Be4Ei

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 x402node-gas-fee-forecast-48d3a5e4
```

Example prompt: Is now a good time to send my transaction on Base, or should I wait for the base fee to drop? Give me the current gas trend and a timing recommendation.

## When to prefer this

Use this endpoint when an AI agent needs to decide the optimal moment to submit a blockchain transaction and wants a pre-computed timing signal based on live base fee trend data — particularly useful since LLMs cannot compute live block-by-block fee trends themselves. Prefer this over raw gas price endpoints when you need actionable advice (send now vs. wait) rather than just a raw gwei number.

## Known failure modes

- Unsupported network specified — only Base and Ethereum mainnet are supported
- RPC or upstream node unavailable — may return 503 if live block data cannot be fetched
- Stale data if block production is delayed
- Payment not processed — 402 response if USDC payment header is missing or insufficient

## How this service works

Analyze the short-term base fee trend on Base or Ethereum to advise whether to send a transaction now or wait - a cost-optimization signal for agents that LLMs cannot compute from live blocks. gas forecast, gas trend, should i send now, gas timing, base fee trend, optimal gas time Accepts payment on Base or Solana — either network works.

## Output

Returns a short-term base fee trend analysis for Base or Ethereum, including whether fees are rising, falling, or stable, and a timing recommendation advising whether to send a transaction now or wait — a live cost-optimization signal derived from recent block data.

## Example request

```json
{
 "network": "base",
 "timeframe": "short-term"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "chain": {
       "type": "string",
       "description": "base (default), ethereum"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402node-gas-fee-forecast-48d3a5e4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)