# klymax402 Gas Oracle — Blockchain Gas Price API

> klymax402 Gas Oracle — Blockchain Gas Price API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns current gas prices, base fees, priority fees, ETH price, and congestion level for Ethereum or Base blockchain networks

## Facts

- Endpoint: GET https://klymax402.com/api/gas-oracle/api/price
- 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/klymax402-gas-oracle-blockchain-gas-price-api-4a48b624
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rmC1VUR6d3_s67IkZZPLD

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 klymax402-gas-oracle-blockchain-gas-price-api-4a48b624
```

Example prompt: What are the current gas prices on Ethereum right now — give me the base fee, priority fee, and an estimated cost in USD so I know whether it's cheap to transact.

## When to prefer this

Use this endpoint when an agent needs real-time gas fee data for Ethereum or Base networks without managing API keys, especially when integrated into a broader x402 payment-enabled agent workflow. Prefer this over free public RPC calls when you need structured USD cost estimates and congestion signals alongside raw Gwei values.

## Known failure modes

- Invalid chain parameter value — only 'base' and 'ethereum' are accepted
- Network unavailable causing stale or missing gas data
- Payment failure if USDC balance on Base is insufficient for the $0.003 call fee
- Rate limiting or timeout if upstream gas oracle data source is unreachable

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

A JSON object containing the blockchain network name, current congestion level, base fee in Gwei, ETH price in USD, current gas price in Gwei, priority fee breakdown, and estimated transaction cost in USD.

## 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": {
       "enum": [
        "base",
        "ethereum"
       ],
       "type": "string",
       "description": "Blockchain network (default: base)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "example",
  "congestion": "example",
  "baseFeeGwei": 1,
  "ethPriceUsd": 1,
  "gasPriceGwei": 1,
  "priorityFeeGwei": {},
  "estimatedCostUsd": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-gas-oracle-blockchain-gas-price-api-4a48b624/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)