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HefestoAI

by artvepa80 · remote · no sign-in to list tools · v4.20.2 · published by GitHub user artvepa80

HefestoAI checks AI-generated code before you ship it.

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 only read.

Scanned Oct 21, 2026

2 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http hefestoai https://hefestoai.narapallc.com/api/mcp-protocol

Findings

Matches of fixed checks, with the text they matched.

2 warn
  • Warninstall

    The server marks "install" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "install" says "install": a word for a change.

    What this check looks for
  • Warnanalyze

    The server marks "analyze" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "analyze" says "analyze": a word for reading.

    What this check looks for

Tools

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

4 tools

Changes things 2Claude Code: ask
  • analyzeRuns the open-source hefesto-ai engine (`hefesto analyze --no-config`, free tier) on the files you send to the hosted analyzer and returns its findings: rule id, severity, file, li…1 finding

    Why it is in this group

    • The name "analyze" says "analyze": a word for reading.
    • The description's first verb is "run": a word for a change.
    • The input takes a statement or command to run (input.code), which can change anything it can reach.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "analyze" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "analyze" says "analyze": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Runs the open-source hefesto-ai engine (`hefesto analyze --no-config`, free tier) on the files you send to the hosted analyzer and returns its findings: rule id, severity, file, line, message and the SARIF hefestoFingerprint/v1 fingerprint (format "sarif" adds the full SARIF 2.1.0 log). Provide files, or a single code snippet plus language. Covers Python, COBOL, the DevOps/IaC formats hefesto analyze routes, and TypeScript, JavaScript, Java, Go, Rust and C# through the multilang tree-sitter grammars (the first such request on a fresh server instance downloads the grammars and can take a few seconds longer). Limits: 20 files, 100 KB per file, 256 KB in total, 20 seconds, 10 requests per minute per IP, shared across server instances. No .hefesto.yaml is read. Files are deleted after the run; nothing is stored. For a whole repository, run `hefesto analyze .` locally.

    Annotations the server declares

    • title: Analyze code
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • installReturn install commands for the open-source package (pip install hefesto-ai, Python 3.10+).1 finding

    Why it is in this group

    • The name "install" says "install": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "install" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "install" says "install": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Return install commands for the open-source package (pip install hefesto-ai, Python 3.10+). Does not install anything on the caller's machine. No parameters.

    Annotations the server declares

    • title: Install
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • compareReturn a short static comparison of HefestoAI with one named tool.No findings

    Why it is in this group

    • The name "compare" says "compare": a word for reading.
    Description, as the server wrote it
    Return a short static comparison of HefestoAI with one named tool. No live lookup and no code is inspected. Known values: sonarqube (the default when tool is omitted), snyk, github-advanced-security, semgrep, claude-code-security. Any other value is answered as sonarqube.

    Annotations the server declares

    • title: Compare tools
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • pricingReturn current HefestoAI prices (Free $0, PRO: $8/month, OMEGA: $19/month).No findings

    Why it is in this group

    • The description's first verb is "return": a word for reading.
    Description, as the server wrote it
    Return current HefestoAI prices (Free $0, PRO: $8/month, OMEGA: $19/month). Static text. Does not look up or change a subscription. No parameters.

    Annotations the server declares

    • title: Pricing
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

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

claude mcp add --transport http hefestoai https://hefestoai.narapallc.com/api/mcp-protocol

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__hefestoai__pricing",
      "mcp__hefestoai__compare"
    ],
    "ask": [
      "mcp__hefestoai__install",
      "mcp__hefestoai__analyze"
    ],
    "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 hefestoai. Review it before you use it.