diff --git a/README.md b/README.md
index c8f1430..358852e 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,14 @@ Both servers use OAuth. Nothing connects until you sign in to Polar and authoriz
 
 Then run `/mcp`, select `polar` or `polar-sandbox` and sign in to Polar in your browser. Skills are available as `/polar:setup-polar`, `/polar:polar-integration` and so on, and Claude also uses them on its own when a task matches.
 
-### Codex
+### ChatGPT and Codex
+
+Polar is in OpenAI's plugin directory, which ChatGPT and Codex share.
+
+- **Codex CLI:** run `/plugins`, search for Polar and install it, then start a new session.
+- **ChatGPT and the Codex app:** open the **Plugins** tab, search for Polar and install it.
+
+Sign in to Polar when prompted, either during install or the first time you use the plugin. The directory version connects to your live organization only; for `polar-sandbox`, install from this repository instead:
 
 ```bash
 codex plugin marketplace add polarsource/agent-toolkit
diff --git a/RELEASE.md b/RELEASE.md
index 399aaea..4598bc2 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -23,13 +23,13 @@ The [Validate plugin](https://github.com/polarsource/agent-toolkit/actions/workf
 
 ## 3. Merge the pull request
 
-Merging runs the [Release](https://github.com/polarsource/agent-toolkit/actions/workflows/release.yml) workflow, which creates the `vX.Y.Z` tag, the GitHub release with your changelog notes, and the `polar-openai-X.Y.Z` ZIP.
+Merging runs the [Release](https://github.com/polarsource/agent-toolkit/actions/workflows/release.yml) workflow, which creates the `vX.Y.Z` tag and the GitHub release with your changelog notes, with the `polar-openai-X.Y.Z.zip` attached.
 
 ## 4. Update each listing
 
 | Where | What to do |
 | --- | --- |
-| OpenAI | Download the `polar-openai-X.Y.Z` artifact from the release run, upload it at [platform.openai.com/plugins](https://platform.openai.com/plugins) and submit it for review. Skip this only if the release changed nothing in the ZIP, which holds `skills/`, `openai/`, `README.md` and the logo. Changes to the MCP server's tools ship from the Polar monorepo, and OpenAI picks those up on its own. |
+| OpenAI | Download `polar-openai-X.Y.Z.zip` from the [GitHub release](https://github.com/polarsource/agent-toolkit/releases/latest), upload it at [platform.openai.com/plugins](https://platform.openai.com/plugins) and submit it for review. Skip this only if the release changed nothing in the ZIP, which holds `skills/`, `openai/`, `README.md` and the logo. Changes to the MCP server's tools ship from the Polar monorepo, and OpenAI picks those up on its own. |
 | Cursor | Cursor reviews every update. Check the plugin's status in Cursor's publisher dashboard, and resubmit at [cursor.com/marketplace/publish](https://cursor.com/marketplace/publish) if the new version doesn't show up for review. |
 | Gemini | **Nothing**. It indexes new tags daily, as long as the repository has the `gemini-cli-extension` topic. |
 | Anthropic | **Nothing**. It rescans `main`, and a reviewer approves the new version. Check its status at [claude.ai/directory/manage](https://claude.ai/directory/manage). |