Touchstone

io.github.savecharlie由 GitHub 账号 savecharlie 发布v0.1.0更新于 Oct 24, 2026

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

发布方自己的服务：Touchstone

已验证STDIO仅桌面开发者工具数据与分析

服务详情

标识符: io.github.savecharlie/touchstone
传输: STDIO
运行时: Desktop only
信任: Verified
发布于: Sep 16, 2026

安全提示

MCP 服务会接收对话中的工具调用请求，并可能执行外部操作。启用前请先了解该服务能做什么，并只授予它所需的权限。

注册中心已验证此条目所属的 GitHub 账号 savecharlie。这并不表明该账号就是产品方。

SourceWeft 的检查只涵盖条目是否完整、端点是否响应；不审查服务器的代码，也不审查其工具的行为。

在 README 中添加徽章

向读者展示该 MCP 服务已收录于 SourceWeft，徽章链接到本页。

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概览

AI 生成的概览

本地 MCP 服务器，提供六个确定性的文本、代码与度量工具，结果复现具名公开标准，可重新执行核验。

可以做什么: 按 NIST SP 811 精确系数进行单位换算，包括仿射温度换算，并标明结果是否精确。按 APA 7、MLA 9、芝加哥作者-年份或 BibTeX 格式生成引文与参考文献。生成统一差异、RFC 6902 JSON Patch 和逐词内联差异。用确定性风格规则标记校对问题。计算 Flesch、Flesch-Kincaid、Gunning Fog、SMOG、Coleman-Liau、ARI 等可读性指标。检查代码在指定语言下能否解析并定位语法错误。
适用场景: 适合需要精确、可重复结果的场景：单位换算、引文格式化、文本比较、校对、可读性评分或语法检查，也适合希望结果可重新执行核验而非直接采信的情况。
运行要求: 作为本地 stdio 进程在用户机器上运行，需从 PyPI 安装带 mcp 附加项的 touchstone-compute 包，再用 touchstone-mcp 命令启动。仅限桌面端；未声明认证、环境变量或请求头。

安装前请注意

开源核心包在本地运行且结果确定，但 README 说明托管套件另含基于 x402 的按次付费签名收据以及随机数与密封层，这些托管功能与本本地服务器无关。结果应重新执行核验，不宜直接采信。

安装

在 SourceWeft 中

打开控制台中的 Touchstone，将其添加到工作区。
为需要使用其工具的对话启用该服务。

Desktop only，通过 STDIO。 STDIO 服务会启动本地进程，因此需要 SourceWeft 桌面宿主。

其他 MCP 客户端

参照仓库中的启动说明。

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)