MCP server

HALLUX

dev.blvkware/hallux

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

blvkware.dev (verified by the MCP Registry)

Status

Working at last check

Tools

4

Token cost

About 1,219 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http hallux https://api.blvkware.dev/hallux/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.hallux]
url = "https://api.blvkware.dev/hallux/mcp"

Gemini CLI

{"mcpServers":{"hallux":{"httpUrl":"https://api.blvkware.dev/hallux/mcp"}}}

Cursor

{"mcpServers":{"hallux":{"url":"https://api.blvkware.dev/hallux/mcp"}}}

VS Code

{"servers":{"hallux":{"type":"http","url":"https://api.blvkware.dev/hallux/mcp"}}}

Antigravity

agy mcp add hallux https://api.blvkware.dev/hallux/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"hallux","server_url":"https://api.blvkware.dev/hallux/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"hallux","server_url":"https://api.blvkware.dev/hallux/mcp"}

Tools

• hallux_check ~418 tokens
  Does this identifier actually exist? Call before acting on any name you recalled rather than read: a package to install, a module to import, a DOI to cite. Returns one of: exists, deprecated, absent, phantom, squat, unknown. exists - proceed deprecated - proceed, but use `successor` absen
• hallux_check_command ~263 tokens
  Call this BEFORE running any command that installs a dependency: npm, yarn, pnpm, bun, pip, uv, poetry, pipx, cargo, go get, dotnet add package, nuget. Language models invent plausible package names that have never existed, and attackers register those names because they can predict them. Installin
• hallux_check_manifest ~184 tokens
  Call this after writing or editing a dependency file, and before committing it. Supported: package.json, requirements.txt, pyproject.toml, Cargo.toml, go.mod. Checks every dependency in one pass, including dev and optional groups, which is where an invented name usually arrives.
• hallux_watch ~354 tokens
  Register identifiers for notification when their verdict changes. The transition that matters is phantom to squat: a name models invent that somebody then registers. Use this for a dependency that came back `absent` or `phantom` and that the user intends to use anyway, or for a set of dependencies

Browse

• Web analytics

Related MCP servers

• Vigía
  What breaks between versions, vulnerabilities, compatible versions, EOL dates: npm, PyPI, Rust, PHP.
• iDos Games
  Configure cross-platform and web3 games on iDos Games: live config, tokens, NFTs, AI assets, builds.
• PG1 Sovereign Threat Intelligence
  Preflight for AI agents, signed: one call; wallet, domain, IP abuse, package checks and CVEs.
• Stormap
  Brainstorm scored idea maps, check npm/PyPI packages and vendors, find the right paid API.
• Petal Components
  Phoenix LiveView component schemas from petal_components, exposed to AI coding assistants.
• Presend dependency checks
  Check an npm/PyPI package before an AI agent installs it: 5 focused supply-chain tools.
• Pulsefeed X402
  Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.
• e18e
  The official e18e MCP server keeping your agent in check from installing bloated dependencies.

Badge for your README

[![AptLynx](https://aptlynx.net/badge/dev.blvkware/hallux.svg)](https://aptlynx.net/servers/dev.blvkware/hallux)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents