Touchstone

io.github.savecharlie由 GitHub 帳號 savecharlie 發布v0.1.0更新於 Oct 24, 2026

Verifiable text/code/measurement tools for agents, each reproducing a named authority.

發布方自己的服務：Touchstone

已驗證STDIO僅桌面開發者工具資料與分析

服務詳細資訊

識別碼: io.github.savecharlie/touchstone
傳輸: STDIO
執行環境: Desktop only
信任: Verified
發布於: Sep 16, 2026

安全提示

MCP 服務會接收對話中的工具呼叫請求，並可能執行外部操作。啟用前請先了解該服務能做什麼，並只授予它所需的權限。

註冊中心已驗證此條目所屬的 GitHub 帳號 savecharlie。這並不表明該帳號就是產品方。

SourceWeft 的檢查只涵蓋條目是否完整、端點是否回應；不審查伺服器的程式碼，也不審查其工具的行為。

在 README 中新增徽章

向讀者展示該 MCP 服務已收錄於 SourceWeft，徽章連結到本頁。

[![Listed on SourceWeft](https://sourceweft.com/badge/mcp/io.github.savecharlie%2Ftouchstone.svg)](https://sourceweft.com/mcp/io.github.savecharlie%2Ftouchstone?utm_source=readme&utm_medium=badge)

概覽

AI 產生的概覽

本機 MCP 伺服器，提供六個確定性的文字、程式碼與量測工具，結果重現具名公開標準，可重新執行驗證。

可以做什麼: 依 NIST SP 811 精確係數進行單位換算，包含仿射溫度換算，並標明結果是否精確。依 APA 7、MLA 9、芝加哥作者-年份或 BibTeX 格式產生引文與參考文獻。產生統一差異、RFC 6902 JSON Patch 與逐字內嵌差異。以確定性風格規則標記校對問題。計算 Flesch、Flesch-Kincaid、Gunning Fog、SMOG、Coleman-Liau、ARI 等可讀性指標。檢查程式碼在指定語言下能否解析並定位語法錯誤。
適用情境: 適合需要精確、可重複結果的情境：單位換算、引文格式化、文字比對、校對、可讀性評分或語法檢查，也適合希望結果可重新執行驗證而非直接採信的情況。
執行需求: 以本機 stdio 程序在使用者機器上執行，需從 PyPI 安裝帶 mcp 附加項的 touchstone-compute 套件，再以 touchstone-mcp 指令啟動。僅限桌面端；未宣告驗證、環境變數或標頭。

安裝前請注意

開源核心套件在本機執行且結果確定，但 README 說明託管套件另含以 x402 為基礎的按次付費簽章收據以及隨機數與密封層，這些託管功能與本本機伺服器無關。結果應重新執行驗證，不宜直接採信。

安裝

在 SourceWeft 中

開啟儀表板中的 Touchstone，將其新增到工作區。
為需要使用其工具的對話啟用該服務。

Desktop only，透過 STDIO。 STDIO 服務會啟動本機處理程序，因此需要 SourceWeft 桌面主機。

其他 MCP 客戶端

參照儲存庫中的啟動說明。

README

Touchstone — verifiable compute for agents

mcp-name: io.github.savecharlie/touchstone

Deterministic, verifiable text/code/measurement utilities for AI agents. Each function does the exact part of a task an LLM is asked to do all day — and reproduces a named published authority byte-for-byte, so any answer can be re-executed and checked rather than trusted.

Trust by re-execution, not reputation. The proof is the property.

This is the open core. The hosted suite at touchstone.locomot.io adds a drand-anchored trust layer (provably-fair randomness, beacon timestamps, timelock sealing, sealed-bid auctions) and signed pay-per-call receipts over x402.

Install

bash

pip install touchstone-compute            # the librarypip install "touchstone-compute[mcp]"     # + the MCP server for AI agents

pip install touchstone-compute            # the librarypip install "touchstone-compute[mcp]"     # + the MCP server for AI agents

The tools

Function	Does	Authority
`units.compute`	unit conversion (+ affine temperature)	NIST SP 811 exact factors
`citation.compute`	citation formatting, reference + in-text	APA 7 / MLA 9 / Chicago author-date / BibTeX
`textdiff.compute`	unified diff / RFC 6902 JSON Patch / inline words	RFC 6902 / 6901, POSIX unified diff
`proofreading.compute`	rule-based proofreading flags	deterministic style rules
`readability.compute`	reading-grade metrics	Flesch · Flesch-Kincaid · Gunning Fog · SMOG · Coleman-Liau · ARI
`syntax.compute`	does it parse? + error location	each language's reference parser

python

from touchstone import units, citation, textdiff
units.compute(1, "nautical_mile", "meter")          # {'result': 1852.0, 'exact': True, ...}
citation.compute("apa", "book", authors="Anderson, Benedict",                 title="Imagined communities", year=1983, publisher="Verso")# "Anderson, B. (1983). *Imagined communities*. Verso."
textdiff.compute(a='{"v":1}', b='{"v":2}', mode="json")# {'patch': [{'op': 'replace', 'path': '/v', 'value': 2}], 'op_count': 1, ...}

from touchstone import units, citation, textdiff
units.compute(1, "nautical_mile", "meter")          # {'result': 1852.0, 'exact': True, ...}
citation.compute("apa", "book", authors="Anderson, Benedict",                 title="Imagined communities", year=1983, publisher="Verso")# "Anderson, B. (1983). *Imagined communities*. Verso."
textdiff.compute(a='{"v":1}', b='{"v":2}', mode="json")# {'patch': [{'op': 'replace', 'path': '/v', 'value': 2}], 'op_count': 1, ...}

As an MCP server

bash

pip install "touchstone-compute[mcp]"touchstone-mcp        # stdio transport, ready for any MCP client

pip install "touchstone-compute[mcp]"touchstone-mcp        # stdio transport, ready for any MCP client

Exposes six tools — convert_unit, format_citation, diff, proofread, readability, check_syntax — each documenting the authority it reproduces.

Why verifiable, not just correct

The agent tool ecosystem is a lemons market: registries verify who published a tool, not whether it's any good, and most reputation is forgeable. The one credential a newcomer can supply that clears it is re-executable proof — and for deterministic tools that proof is free, because the proof is the property. Don't trust these answers; re-run them. (the argument in full)