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session-preflight

v0.1.3

SessionStart hook that runs a fast, read-only environment preflight — auth commands, expected tokens (shell env AND known env files), required CLIs, and a host/user/repo/branch identity line — and surfaces failures at the top of the session so the first tool call is never wasted on a dead environment. Never blocks the session.

CodexClaude Code

By Andre PaatLicense: MIT0 GitHub starsUpdated last week

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
0 skill or MCP entries
Source updated
Sep 13, 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 session-preflight for Codex and Claude Code

Installs for the current user
codex plugin marketplace add paat/claude-plugins
codex plugin marketplace upgrade paat-plugins
codex plugin add session-preflight@paat-plugins

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

Compatibility: the page URL and API slug “session-preflight” remain stable.

  • Codex: session-preflight@agent-plugin-marketplace → session-preflight@paat-plugins

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/paat/claude-plugins

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

Plugin files

plugins/session-preflight/
├── .codex-plugin/plugin.json
└── .claude-plugin/plugin.json

Plugin manifests2

plugins/session-preflight/.codex-plugin/plugin.json
{
  "name": "session-preflight",
  "version": "0.1.3",
  "description": "SessionStart hook that runs a fast, read-only environment preflight — auth commands, expected tokens (shell env AND known env files), required CLIs, and a host/user/repo/branch identity line — and surfaces failures at the top of the session so the first tool call is never wasted on a dead environment. Never blocks the session.",
  "author": {
    "name": "Andre Paat"
  },
  "interface": {
    "displayName": "Session Preflight",
    "shortDescription": "SessionStart hook that runs a fast, read-only environment preflight — auth commands, expected tokens (shell env AND known env files), required CLIs, and a host/user/repo/branch identity line — and surfaces failures at the top of the session so the first tool call is never wasted on a dead environment. Never blocks the session.",
    "longDescription": "SessionStart hook that runs a fast, read-only environment preflight — auth commands, expected tokens (shell env AND known env files), required CLIs, and a host/user/repo/branch identity line — and surfaces failures at the top of the session so the first tool call is never wasted on a dead environment. Never blocks the session.",
    "developerName": "Andre Paat",
    "category": "Productivity",
    "capabilities": [
      "Lifecycle Hooks"
    ],
    "defaultPrompt": "Use the session-preflight plugin for this task.",
    "websiteURL": "https://github.com/paat/claude-plugins"
  },
  "homepage": "https://github.com/paat/claude-plugins",
  "repository": "https://github.com/paat/claude-plugins",
  "license": "MIT",
  "keywords": [
    "sessionstart",
    "preflight",
    "auth",
    "tokens",
    "environment",
    "identity",
    "gh-auth",
    "credentials"
  ]
}
plugins/session-preflight/.claude-plugin/plugin.json
{
  "name": "session-preflight",
  "version": "0.1.3",
  "description": "SessionStart hook that runs a fast, read-only environment preflight — auth commands, expected tokens (shell env AND known env files), required CLIs, and a host/user/repo/branch identity line — and surfaces failures at the top of the session so the first tool call is never wasted on a dead environment. Never blocks the session.",
  "author": {
    "name": "Andre Paat"
  },
  "repository": "https://github.com/paat/claude-plugins",
  "license": "MIT",
  "keywords": [
    "sessionstart",
    "preflight",
    "auth",
    "tokens",
    "environment",
    "identity",
    "gh-auth",
    "credentials"
  ]
}

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.

[session-preflight on Agent Plugins Marketplace](https://pluginsmp.com/plugins/session-preflight)