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Gas Estimator X402 MCP Server

@Br0ski777

リポジトリ

基本情報

カテゴリ

その他

ライセンス

MIT

トランスポート

stdio

作者

Br0ski777

投稿者

Br0ski777

Gas Estimator X402 MCP Server について

Multi-chain gas prices in one call -- ETH, Base, Polygon, Arbitrum, BSC. Compare chains to find cheapest. -- x402 micropayment API + MCP server for AI agents

Gas Estimator X402 MCP Server の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "gas-estimator": {
      "url": "https://gas-estimator-x402-production.up.railway.app/mcp",
      "transport": "sse"
    }
  }
}

Gas Estimator X402 MCP Server のツール

1

POST

概要

What is Gas Estimator X402?

Gas Estimator X402 is a multi-chain gas price estimation server that returns live gas prices for Ethereum, Base, Polygon, Arbitrum, and BSC in one call. It uses the x402 pay-per-call protocol (USDC on Base L2) – no API key, no signup, no rate-limit wall. Designed for AI agents and developers needing quick, cross-chain gas cost comparisons.

How to use Gas Estimator X402?

Add the MCP server to your client config (Claude Desktop, Cursor, ElizaOS, etc.) using the URL https://gas-estimator.api.klymax402.com/mcp. Or call the HTTP endpoint directly with a POST to /api/estimate; an x402‑aware client like @x402/fetch handles the payment challenge automatically. The tool crypto_estimate_gas returns multi-chain gas estimates including USD cost.

Key features of Gas Estimator X402

  • Multi-chain gas prices in one call (ETH, Base, Polygon, Arbitrum, BSC)
  • Pay-per-call via x402 (USDC on Base) – no signup or API key
  • Identifies the cheapest chain for transactions
  • Returns low/medium/high gas prices in gwei
  • Returns estimated USD cost for a simple transfer per chain
  • Part of the klymax402 marketplace of 100 x402 micropayment APIs

Use cases of Gas Estimator X402

  • Compare gas costs across EVM chains before a cross-chain transaction
  • Optimize gas spending for multi-chain AI agents
  • Automate chain selection in DeFi workflows
  • Monitor live gas prices without rate-limit concerns

よくある質問

1

What chains are supported by Gas Estimator X402?

Gas Estimator X402 currently supports Ethereum, Base, Polygon, Arbitrum, and BSC. You can query a specific chain or all chains at once.

2

How does payment work?

Payments use the [x402](https://x402.org) protocol – an HTTP‑native pay-per-call system. The network is Base L2 (eip155:8453) and the asset is USDC. No API key or upfront signup is required.

3

Do I need an API key to use Gas Estimator X402?

No. Gas Estimator X402 does not require an API key or signup. Each call is paid via the x402 micropayment challenge.

4

Are there rate limits?

There are no fixed rate limits. Each request is paid individually (USDC $0.002 per call), so you can make as many calls as your wallet allows.

5

Can Gas Estimator X402 provide swap quotes or bridge routes?

No. This tool is strictly for gas price estimates. For swap quotes use a `dex_get_swap_quote` tool; for bridging use a `bridge_find_best_route` tool.

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