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io.github.inity13/decisionmatrix-mcp

by inity13 · remote · local (npm) · no sign-in to list tools · v1.0.2 · published by GitHub user inity13

Deterministic multi-criteria decision analysis for AI agents — score, rank & explain options.

Changes · 4
CompareRegistry entry

6 tools: 4 change things and 2 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 decisionmatrix https://decisionmatrix-mcp.pages.dev/mcp

Tools

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

6 tools

Changes things 4Claude Code: ask
  • create_decisionRank named options against weighted criteria and return the winner, full ranking, per-criterion score breakdowns, methodology, the weights used, and a plain-language explanation.No findings

    Why it is in this group

    • The name "create_decision" says "create": a word for a change.
    Description, as the server wrote it
    Rank named options against weighted criteria and return the winner, full ranking, per-criterion score breakdowns, methodology, the weights used, and a plain-language explanation. This is the main tool. Provide options, criteria [{name, weight, direction}], and a scores matrix. method defaults to weighted_sum (also: weighted_product, topsis). 100% deterministic.
  • health_checkServer health, version, and capabilities.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Server health, version, and capabilities. No parameters.
  • score_optionsScore options against criteria when the score matrix is supplied separately.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Score options against criteria when the score matrix is supplied separately. Returns the full normalized scored matrix (per-option, per-criterion) plus a ranking, without the narrative winner explanation. Use create_decision if you want a winner + explanation.
  • sensitivity_analysisTest how robust the winner is to changes in criteria weights.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Test how robust the winner is to changes in criteria weights. Sweeps each criterion's weight +/- 'variation' (default 0.2 = 20%) over 'steps' (default 10) increments, recomputes the ranking, and reports a robustness score, which criteria are most likely to flip the result, and the flip points.
Only reads 2Claude Code: allow
  • compare_twoDirect head-to-head comparison of exactly two options.No findings

    Why it is in this group

    • The name "compare_two" says "compare": a word for reading.
    Description, as the server wrote it
    Direct head-to-head comparison of exactly two options. Returns the winner, the score margin, how many criteria each option wins, and a per-criterion breakdown of who each criterion favours. Pass option_a and option_b (names) or a 2-element options array, plus criteria and scores.
  • list_methodsList the available scoring methods (weighted_sum, weighted_product, topsis) with descriptions, normalization details, score ranges, and when to use each.No findings

    Why it is in this group

    • The name "list_methods" says "list": a word for reading.
    Description, as the server wrote it
    List the available scoring methods (weighted_sum, weighted_product, topsis) with descriptions, normalization details, score ranges, and when to use each. No parameters.

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

claude mcp add --transport http decisionmatrix https://decisionmatrix-mcp.pages.dev/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__decisionmatrix__compare_two",
      "mcp__decisionmatrix__list_methods"
    ],
    "ask": [
      "mcp__decisionmatrix__create_decision",
      "mcp__decisionmatrix__score_options",
      "mcp__decisionmatrix__sensitivity_analysis",
      "mcp__decisionmatrix__health_check"
    ],
    "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 decisionmatrix. Review it before you use it.