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AgentGas

by agentgas.madebydevx.com · remote · no sign-in to list tools · v1.2.0 · published by com.madebydevx.agentgas

Quotes, capacity and order status for buying native gas on Base/Arbitrum/Optimism/Polygon via x402.

Final · 2
CompareRegistry entry

4 tools: 2 do something that can't be undone and 2 only read.

Scanned Oct 21, 2026

2 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http agentgas https://agentgas.madebydevx.com/mcp

Findings

Matches of fixed checks, with the text they matched.

2 warn
  • Warnagentgas_quote

    The server marks "agentgas_quote" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.

    What this check looks for
  • Warnagentgas_how_to_buy

    The server marks "agentgas_how_to_buy" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Can't be undone 2Claude Code: ask
  • agentgas_how_to_buyStep-by-step instructions plus the exact x402 payment URL for buying native gas for an address.1 finding

    Why it is in this group

    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "agentgas_how_to_buy" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Step-by-step instructions plus the exact x402 payment URL for buying native gas for an address. This MCP server cannot sign payments; your x402 client (e.g. @x402/fetch) pays the URL with USDC on Base, gasless (EIP-3009 signature, no ETH needed).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • agentgas_quoteFree price quote: how much USDC (on Base, paid via gasless x402) buys a given amount of native gas (ETH on base/arbitrum/optimism, POL on polygon).1 finding

    Why it is in this group

    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "agentgas_quote" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Free price quote: how much USDC (on Base, paid via gasless x402) buys a given amount of native gas (ETH on base/arbitrum/optimism, POL on polygon). Returns price_usdc, breakdown and the exact x402 URL to pay. Rejects bad input or over-capacity before any payment.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
Only reads 2Claude Code: allow
  • agentgas_orderStatus of an AgentGas order by order_id: pending, processing, delivered (with payout_tx on the destination chain) or refunded (with refund_tx on Base).No findings

    Why it is in this group

    • The description's first verb is "status": a word for reading.
    Description, as the server wrote it
    Status of an AgentGas order by order_id: pending, processing, delivered (with payout_tx on the destination chain) or refunded (with refund_tx on Base).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • agentgas_statusLive per-chain float, availability, prices and daily caps of the AgentGas service.No findings

    Why it is in this group

    • The name "agentgas_status" says "status": a word for reading.
    Description, as the server wrote it
    Live per-chain float, availability, prices and daily caps of the AgentGas service. Check before paying.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http agentgas https://agentgas.madebydevx.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__agentgas__agentgas_status",
      "mcp__agentgas__agentgas_order"
    ],
    "ask": [
      "mcp__agentgas__agentgas_quote",
      "mcp__agentgas__agentgas_how_to_buy"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as agentgas. Review it before you use it.