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Keystone

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

What an arXiv paper builds on, disputes and assumes, read verbatim from its LaTeX. No LLM.

Read only
CompareRegistry entry

3 tools: 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 keystone https://keystone-research.vercel.app/api/mcp

Tools

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

3 tools

Only reads 3Claude Code: allow
  • list_disagreementsEvery sentence in the library where a paper says prior work is wrong, or puts itself beside it to win.No findings

    Why it is in this group

    • The name "list_disagreements" says "list": a word for reading.
    Description, as the server wrote it
    Every sentence in the library where a paper says prior work is wrong, or puts itself beside it to win. Small on purpose — disagreement is rare and concentrated, and the whole set is readable.
  • read_paperEverything Keystone reads out of one arXiv paper: what it adopts, extends, disputes and measures against, and the assumptions it states with a citation, its own evidence, or nothin…No findings

    Why it is in this group

    • The name "read_paper" says "read": a word for reading.
    Description, as the server wrote it
    Everything Keystone reads out of one arXiv paper: what it adopts, extends, disputes and measures against, and the assumptions it states with a citation, its own evidence, or nothing at all. Works for any paper on arXiv that ships LaTeX source — one outside the library is parsed on demand, which takes a few seconds. Nothing is summarised or inferred; every line is the paper's own.
  • search_librarySearch 2118 readings taken from 197 arXiv papers' LaTeX source: citation stances (adopts, extends, disputes, measures against) and stated assumptions.No findings

    Why it is in this group

    • The name "search_library" says "search": a word for reading.
    Description, as the server wrote it
    Search 2118 readings taken from 197 arXiv papers' LaTeX source: citation stances (adopts, extends, disputes, measures against) and stated assumptions. Matches on the quoted sentence, the cue phrase that decided it, and the work cited. Returns the sentence verbatim with a link to the exact line.

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 keystone https://keystone-research.vercel.app/api/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__keystone__search_library",
      "mcp__keystone__read_paper",
      "mcp__keystone__list_disagreements"
    ],
    "ask": [],
    "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 keystone. Review it before you use it.