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io.github.petrkrulis2022/touchstone-mcp

by petrkrulis2022 · remote · no sign-in to list tools · v0.1.0 · published by GitHub user petrkrulis2022

Dated SIU, the benchmark price of AI inference work: one free tool, three paid via x402.

Changes · 1
CompareRegistry entry

4 tools: 1 change things and 3 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http touchstone https://mcp.touchstoneassay.com/mcp

Tools

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

4 tools

Changes things 1Claude Code: ask
  • convertConvert a model call's token counts into SIU and USD.No findings

    Why it is in this group

    • The name "convert" says "convert": a word for a change.
    Description, as the server wrote it
    Convert a model call's token counts into SIU and USD.
Only reads 3Claude Code: allow
  • get_indexThe signed Dated SIU print.No findings

    Why it is in this group

    • The name "get_index" says "get": a word for reading.
    Description, as the server wrote it
    The signed Dated SIU print. Free — citation is the business.
  • get_quoteSIU price, exchange rate and index refs for one task class and model.No findings

    Why it is in this group

    • The name "get_quote" says "get": a word for reading.
    Description, as the server wrote it
    SIU price, exchange rate and index refs for one task class and model.
  • verify_receiptReads an on-chain settlement and returns a signed attestation.No findings

    Why it is in this group

    • The description's first verb is "read": a word for reading.
    Description, as the server wrote it
    Reads an on-chain settlement and returns a signed attestation.

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 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http touchstone https://mcp.touchstoneassay.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__touchstone__get_index",
      "mcp__touchstone__get_quote",
      "mcp__touchstone__verify_receipt"
    ],
    "ask": [
      "mcp__touchstone__convert"
    ],
    "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 touchstone. Review it before you use it.