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Contradiction Check MCP server

by onetrueclaude-creator·io.github.onetrueclaude-creator/mcp-contradiction-check·v0.1.0
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Find where your notes disagree — contradiction detection for markdown vaults.

C69/100grade C
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Safety scan
C69/100

full report

Adoption
New

0 stars15 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Contradiction Check tools (4, 1 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • check_pairwrite action

    Run the full contradiction check between two specific notes. Accepts absolute paths or filename stems (within a vault that can be inferred).

  • extract_claims

    [Pro] Pull all quantitative claims (numbers with units) and negation patterns from a single note — structured output for your verification pipeline.

  • find_contradictions

    Scan the vault for note pairs with high concept overlap but conflicting numerical or qualitative claims.

  • generate_reconciliation_prompt

    [Pro] For a detected contradiction between two notes, produce a structured LLM-ready prompt for reasoning through the conflict and suggesting resolution.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan8 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 162 days ago8/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 69/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Contradiction Check compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
69/100
higher than 33% of 48,255 servers
Tools
4
the typical server has 7
Tools that change things
25%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
15
more than 4% of 12,191 servers with a package

What its tools let an agent do: 2 read · 1 create · 1 change

Install Contradiction Check in Claude Code, Cursor or VS Code

claude mcp add mcp-contradiction-check -- uvx mcp-contradiction-check
Add to Cursor

What the publisher says

From the Contradiction Check repository's README, as published. We do not edit it. Read it on GitHub

<!-- mcp-name: io.github.onetrueclaude-creator/mcp-contradiction-check -->

mcp-contradiction-check

Find where your notes disagree — contradiction detection for markdown vaults.

Find pairs of notes in your markdown knowledge base that have high concept overlap but disagree — quantitative conflicts (different numbers with the same unit on the same concept) and negation conflicts (one note claims "X is not Y", another claims "X is Y"). Prevents knowledge corruption by surfacing disputes before they propagate. Designed to pair with hebbian-vault's usage-weighted retrieval to flag notes that shouldn't be strengthened yet.

Install

pip install mcp-contradiction-check
# or
uvx mcp-contradiction-check

Usage

Claude Code

claude mcp add mcp-contradiction-check -- mcp-contradiction-check

Claude Desktop

Add to claudedesktopconfig.json:

{
  "mcpServers": {
    "contradiction_check": {
      "command": "uvx",
      "args": ["mcp-contradiction-check"]
    }
  }
}

MCP Tools

Pro tier

Unlocks detailed claim extraction per note and LLM-ready reconciliation prompt generation for resolving disputes.

License activation — any one of these works:

# 1. Environment variable
export CONTRADICTION_CHECK_LICENSE="eyJhbGc..."

# 2. CLI flag
mcp-contradiction-check --license-key "eyJhbGc..."

# 3. Config file
echo "eyJhbGc..." > ~/.mcp-contradiction-check/license.jwt

Licenses are verified fully offline — no phone-home, no activation server. Get a license at https://github.com/onetrueclaude-creator/mcp-contradiction-check#pro-tier.

Requirements

  • Python 3.10+

License

MIT

Nothing above is checked by us. What we check is on the safety report.

Contradiction Check: common questions

Is Contradiction Check MCP server safe?
With care: it is graded C, so read the findings first (69/100). Read the Contradiction Check safety report
How do I install Contradiction Check?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Contradiction Check need an API key?
Yes. The registry entry asks for CONTRADICTION_CHECK_LICENSE.
Is Contradiction Check maintained?
The last commit was 200 days ago (2026-04-18). The latest release is v0.1.0.
How does Contradiction Check compare with other MCP servers?
safety score 69/100 (higher than 33% of 48,255 servers); tools 4 (the typical server has 7); tools that change things 25% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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