# Signal Nodus EVM Gas Price

> Signal Nodus EVM Gas Price is a paid API for AI agents from api.signalnodus.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Returns the current gas price in Gwei for an EVM-compatible blockchain at a specified block

## Facts

- Endpoint: GET https://api.signalnodus.ai/v1/evm/gas?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-nodus-evm-gas-price-c9c8d6a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h7aZh5XT4wZMCUAMW-tL1

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 signal-nodus-evm-gas-price-c9c8d6a1
```

Example prompt: What's the current gas price in Gwei on the Base chain right now, pinned to the latest block?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call gas price lookup pinned to a specific block on an EVM chain (especially Base), without committing to a subscription or running your own node. Particularly useful for agents that need occasional gas estimates for transaction cost calculations or historical audits.

## Known failure modes

- Invalid or unsupported chain identifier returns an error
- Requested block number is in the future or not yet finalized
- Network connectivity issues to the EVM node return a timeout or 503
- Malformed request missing required parameters returns a 400 bad request
- Payment not received (x402) results in a 402 Payment Required response

## How this service works

Signal Nodus: year-over-year diffs of SEC filing sections, pinned to accession numbers. The diff is the product; raw data is the on-ramp.

## Output

A JSON object containing the chain name (e.g. 'base'), the block number at which the gas price was sampled (atBlock), and the gas price in Gwei (gasPriceGwei) as a float.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "base",
  "atBlock": "50113122",
  "gasPriceGwei": 0.006
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signal-nodus-evm-gas-price-c9c8d6a1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.signalnodus.ai](https://www.zero.xyz/host/api.signalnodus.ai/llms.txt)