# Gas Price Oracle (`yunaremaia/gas-price-oracle`) Actor

Multi-chain gas prices for Ethereum, Base, Arbitrum, Optimism

- **URL**: https://apify.com/yunaremaia/gas-price-oracle.md
- **Developed by:** [Yunare Maia](https://apify.com/yunaremaia) (community)
- **Categories:** Developer tools, Other
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-usage

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Multi-chain Gas Price Oracle

Real-time gas prices for 8 EVM chains with fallback redundancy. Built for AI agents, DeFi apps, and transaction optimization.

### Features

- **8 chains**: Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche, Gnosis
- **Multiple sources**: Blocknative, GasNow (ETH), and redundant RPCs (4x Ethereum, 3x Base, 2x others)
- **EIP-1559 aware**: base fee + priority fee + max fee per chain
- **L2 data fees**: estimated L1 data fee for Arbitrum, Optimism, Base
- **Gas spike alerts**: webhook notifications on fee spikes or rapid changes
- **Block number**: included for transaction planning

### Input

| Field | Type | Default | Description |
|-------|------|---------|-------------|
| `chains` | array | `["ethereum","base","arbitrum","optimism","polygon"]` | Chains to monitor |
| `intervalSeconds` | int | `30` | Check interval (15s - 300s) |
| `webhookUrl` | string | — | Webhook URL for gas spike alerts |
| `maxRuns` | int | `1` | Max checks (default 1 = run once and finish; set higher for continuous monitoring) |
| `gasSpikeThresholdGwei` | number | `50` | Gas fee (gwei) to trigger alert |
| `includeL2Fees` | bool | `true` | Include L1 data fee estimates for L2s |

### Example Input

```json
{
  "chains": ["ethereum", "base", "arbitrum", "optimism", "polygon"],
  "intervalSeconds": 30,
  "gasSpikeThresholdGwei": 50,
  "includeL2Fees": true
}
```

### Output (dataset)

```json
{
  "timestamp": "2026-08-06T01:48:40.458Z",
  "chain": "ethereum",
  "base_fee_gwei": 12.34,
  "priority_fee_gwei": 1.2,
  "max_fee_gwei": 13.54,
  "l1_data_fee_gwei": null,
  "block_number": 21045231,
  "source": "rpc"
}
```

### Use Cases

- **AI agents**: check gas before submitting transactions
- **Bridging**: find cheapest time to bridge assets
- **Trading bots**: optimize transaction timing
- **Monitoring**: alert on gas spikes affecting dApp users

### Pricing

Free for demo runs. Production runs billed per Apify usage units.

# Actor input Schema

## `chains` (type: `array`):

Chains to monitor

## `intervalSeconds` (type: `integer`):

Check interval between runs

## `webhookUrl` (type: `string`):

URL to receive gas spike alerts (optional)

## `gasSpikeThresholdGwei` (type: `number`):

Alert when max fee exceeds this value

## `includeL2Fees` (type: `boolean`):

Estimate L1 data fees for L2 chains

## `maxRuns` (type: `integer`):

Maximum number of checks (default 1 = run once and finish; set higher for continuous monitoring)

## Actor input object example

```json
{
  "chains": [
    "ethereum",
    "base",
    "arbitrum",
    "optimism",
    "polygon"
  ],
  "intervalSeconds": 30,
  "gasSpikeThresholdGwei": 50,
  "includeL2Fees": true,
  "maxRuns": 1
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "chains": [
        "ethereum",
        "base",
        "arbitrum",
        "optimism",
        "polygon"
    ],
    "intervalSeconds": 30,
    "gasSpikeThresholdGwei": 50,
    "includeL2Fees": true,
    "maxRuns": 1
};

// Run the Actor and wait for it to finish
const run = await client.actor("yunaremaia/gas-price-oracle").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "chains": [
        "ethereum",
        "base",
        "arbitrum",
        "optimism",
        "polygon",
    ],
    "intervalSeconds": 30,
    "gasSpikeThresholdGwei": 50,
    "includeL2Fees": True,
    "maxRuns": 1,
}

# Run the Actor and wait for it to finish
run = client.actor("yunaremaia/gas-price-oracle").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "chains": [
    "ethereum",
    "base",
    "arbitrum",
    "optimism",
    "polygon"
  ],
  "intervalSeconds": 30,
  "gasSpikeThresholdGwei": 50,
  "includeL2Fees": true,
  "maxRuns": 1
}' |
apify call yunaremaia/gas-price-oracle --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,yunaremaia/gas-price-oracle"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/CulRcAooRe4BZHitA/builds/aKeOOA7UhSPjP3pFy/openapi.json