Codex

Works with the CLI alone. No gander.md account.

Codex is OpenAI's coding agent. It runs in the Codex CLI, the IDE extension, and ChatGPT, and it works against the files on your machine.

Codex (CLI, IDE extension, and ChatGPT desktop Codex) loads skills from .agents/skills walking up to the repo root, and from ~/.agents/skills. gander skill already links that user dest. gander mcp install appends a [mcp_servers.gander] table to ~/.codex/config.toml. Invoke a skill in the CLI with $gander or /skills.

A shorter product page lives at Use with Codex.

1. Install the CLI

curl -fsSL https://release.gander.md/install.sh | bash
gander --version

After Homebrew or a source build:

gander skill

2. Confirm the skill landed

ls -l ~/.agents/skills/gander/SKILL.md

Codex treats ~/.agents/skills as the user scope. Restart Codex, then run /skills or type $ and look for gander. Codex detects skill changes automatically; if Gander is missing, restart once.

To pin the skill in a repo for the team, symlink or copy the folder to .agents/skills/gander at the repository root.

3. Sign up and install MCP

gander signup --email [email protected]
gander mcp install

Confirm ~/.codex/config.toml contains:

[mcp_servers.gander]
command = "/full/path/to/gander"
args = ["mcp"]

gander mcp install writes the resolved binary path. Restart Codex after the merge. If the table already existed, install leaves it alone.

4. Use it

  1. Ask Codex for a plan. The skill should save markdown under ./plans/ and offer a gander.
  2. Say gander this file or watch this plan. After signup: gander watch plan.md.
  3. Send the https://gander.md/s/… link. Reviewers stay in the browser.
  4. @agent comments land through MCP. Codex edits the local file and replies in the thread. The hosted page updates on save.

After you gander a file, Codex checks the inbox on a wall-clock backoff for two hours, not at the start of every later turn. You do not paste Slack into the prompt.

If MCP is not connected:

gander comments
gander comments plan.md

5. Verify

gander list
gander comments

In Codex, list MCP tools. You want gander_list_comments, gander_reply_comment, gander_resolve_thread, and gander_unresolve_thread. $gander should resolve to the skill.

More: Skill, MCP, Hosted watch, Comments.