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Gas Estimator API MCP Server

by br0ski777 Your server? Claim it
not responding

Gas Estimator API is listed as active in the registry but did not answer our last check. It exposes 1 tools. Last commit 2 Sep 2026.

Multi-chain gas estimation — ETH, Base, Polygon, Arbitrum, BSC. x402 micropayment.

Uptime history 51 days of history · worst day 0%
51 days agonow
0.0%
Uptime 24h
0 of 91 checks
1
Tools
read from the server
20 ms
Response time
average over 24h
0
Stars
last commit 2 Sep 2026

Gas Estimator API does not always answer

Over the last week it answered 30.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

run in your terminal
claude mcp add gas-estimator --transport http https://gas-estimator.api.klymax402.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "gas-estimator": {
      "url": "https://gas-estimator.api.klymax402.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.gas-estimator]
url = "https://gas-estimator.api.klymax402.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "gas-estimator": {
      "url": "https://gas-estimator.api.klymax402.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "gas-estimator": {
      "url": "https://gas-estimator.api.klymax402.com/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

crypto
crypto_estimate_gas
Use this when you need to compare gas prices across multiple EVM chains at once. Returns multi-chain gas estimates in JSON. 1. chains: array of chain gas data with chain name 2. low: gas price in gwei for slow confirmation 3. medium: gas price in gwei for standard confirmation 4. high: gas price in gwei for fast confirmation 5. transferCostUsd: estimated USD cost for a simple transfer on each chain 6. cheapestChain: which chain currently has the lowest gas cost Example output: {"chains":[{"chain":"base","low":0.005,"medium":0.008,"high":0.012,"transferCostUsd":0.01},{"chain":"ethereum","low":12.5,"medium":18.0,"high":25.0,"transferCostUsd":0.85}],"cheapestChain":"base"} Use this FOR choosing the cheapest chain before a cross-chain transaction. Essential for multi-chain agents that need to optimize gas costs. Do NOT use for single-chain gas only -- use gas_get_current_price instead. Do NOT use for swap quotes -- use dex_get_swap_quote instead. Do NOT use for bridging -- use bridge_find_best_route instead.

Endpoints

URLTransportStateLatencyChecked
https://gas-estimator.api.klymax402.com/mcp sse answering 20 ms 3 min ago

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Gas Estimator API — questions

Answers built from our own checks of this server.

What can Gas Estimator API do?
It exposes 1 tools, read directly from the server on our last check. Among them: crypto_estimate_gas. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Gas Estimator API working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 20 ms. The bar chart above shows every period we have measured.
The registry lists Gas Estimator API as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Gas Estimator API?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Gas Estimator API need an API key?
No. Gas Estimator API completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
Is Gas Estimator API open source?
Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.