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HALLUX

dev.blvkware/hallux · v0.1.0

Check that a package, module or DOI exists before an agent installs, imports or cites it.

Connect Remote server

Terminal
claude mcp add --transport http hallux https://api.blvkware.dev/hallux/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "hallux": {
      "url": "https://api.blvkware.dev/hallux/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "hallux": {
      "type": "http",
      "url": "https://api.blvkware.dev/hallux/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://api.blvkware.dev/hallux/mcp

Tools 6 found in our last check

  • hallux_check_command

    Call this BEFORE running any command that installs or runs a dependency: npm/yarn/pnpm/bun install, npx, pip/uv/poetry/pipx, cargo add, go get, dotnet add package, gem install, composer require, dart pub add, docker pull/run, git clone. Language models invent plausible package n…

  • hallux_check

    Does this identifier actually exist, and is it safe? Call before acting on any name you recalled rather than read: a package to install, a module to import, a Docker image, a GitHub Action or repo, a DOI to cite. Verdicts: exists (proceed, but read `risk`), deprecated (use `succ…

  • hallux_check_manifest

    Call after writing or editing a dependency file and before committing or installing. Checks every dependency in one pass, including dev and optional groups, where an invented name usually arrives. Exact pinned versions are verified too. Supported: package.json, requirements.txt,…

  • hallux_watch

    Register identifiers for a signed webhook when their verdict changes: phantom -> squat (someone registered a name models invent) or absent -> exists. Use for a name that came back absent/phantom which the user still intends to use, or a dependency set worth monitoring. Requires…

  • hallux_report

    Report identifiers a model produced that turned out not to exist. HALLUX verifies each against its registry and records only absent ones as attestations in the public hallucination ledger, which is how names graduate to `phantom` and get watched for squatting. Requires an API ke…

  • hallux_account

    Show remaining credits for the API key in use (or free-tier status), pricing, and where to buy credits with PayPal.

Details

Endpointhttps://api.blvkware.dev/hallux/mcp (Streamable HTTP)
First published23 Sep 2026
Last updated23 Sep 2026
Registry namedev.blvkware/hallux

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