headerlab

v0.3.1

Drive the HeaderLab Chrome extension's header rules from Codex.

CodexClaude Code

By HeaderLabLicense: Apache-2.00 GitHub starsUpdated 2 weeks ago

Directory evidence

Runtimes: Codex and Claude Code
Parsed components: 0 skill or MCP entries
Source updated: Sep 9, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install headerlab for Codex and Claude Code

Installs for the current user

codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add headerlab@agent-plugin-marketplace

Paste and run these commands in a terminal with Codex. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/say8425/headerlab

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is packages/plugin/.

Plugin files

packages/plugin/

├── .codex-plugin/plugin.json
└── .claude-plugin/plugin.json

Plugin manifests2

packages/plugin/.codex-plugin/plugin.json

{
  "name": "headerlab",
  "version": "0.3.1",
  "description": "Drive the HeaderLab Chrome extension's header rules from Codex.",
  "author": {
    "name": "HeaderLab"
  },
  "homepage": "https://github.com/say8425/headerlab",
  "repository": "https://github.com/say8425/headerlab",
  "license": "Apache-2.0",
  "keywords": [
    "headerlab",
    "http-headers",
    "chrome-extension"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "HeaderLab",
    "shortDescription": "Add, scope, and toggle HTTP header rules in the HeaderLab Chrome extension.",
    "longDescription": "Talks to a running HeaderLab Chrome extension over its native-messaging bridge via the headerlab CLI: scope sites, add or remove header rules, pause or resume the whole rule set, or replace stored state wholesale. Every reply is one JSON object on stdout, success or failure, with the exit code following it.",
    "developerName": "HeaderLab",
    "category": "productivity",
    "capabilities": [
      "Read",
      "Write"
    ],
    "defaultPrompt": "Use the headerlab CLI to inspect or change HeaderLab's header rules."
  }
}

packages/plugin/.claude-plugin/plugin.json

{
  "name": "headerlab",
  "version": "0.3.1",
  "description": "Drive the HeaderLab Chrome extension's header rules from Claude Code.",
  "author": {
    "name": "HeaderLab"
  },
  "homepage": "https://github.com/say8425/headerlab",
  "repository": "https://github.com/say8425/headerlab",
  "license": "Apache-2.0",
  "keywords": [
    "headerlab",
    "http-headers",
    "chrome-extension"
  ],
  "skills": "./skills/"
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[headerlab on Agent Plugins Marketplace](https://pluginsmp.com/plugins/headerlab)