How to save words to Koboshi from Claude Code, Codex and Gemini CLI

Ask Claude Code, Codex or Gemini CLI to save any word to Koboshi, and the word lands in your Koboshi vocabulary.

Jump to: Claude Code · Codex · Gemini CLI

One or two commands in a terminal and one sign-in per app. Koboshi’s Settings → Connections → Connect an AI app page shows all three under Terminal, each command with Copy. These tools change often, so check their own docs if a command stops working. Checked on 2026-10-07.

Updated 2026-10: Gemini CLI added.

Claude Code

Run these two commands. The second opens Koboshi: sign in and press Approve. If your Koboshi account is new, Claude Code also asks the month and year you were born, the same question the Koboshi website asks.

claude mcp add --scope user --transport http koboshi https://koboshi.app/mcp

claude mcp login koboshi

Check: this shows koboshi as ✔ Connected.

claude mcp list

If claude mcp login is not found, start Claude Code, type /mcp, pick koboshi and sign in.

Codex

Run these two commands. The second opens Koboshi: sign in and press Approve. If your Koboshi account is new, Codex also asks the month and year you were born, the same question the Koboshi website asks.

codex mcp add koboshi --url https://koboshi.app/mcp

codex mcp login koboshi

Check: koboshi is on this list.

codex mcp list

One setup covers the Codex CLI, the IDE extension and the ChatGPT desktop app.

Gemini CLI

Run this command. The next time Gemini CLI starts and reaches Koboshi, it opens your browser: sign in to Koboshi and press Approve.

gemini mcp add --scope user --transport http koboshi https://koboshi.app/mcp

Check: koboshi is on this list, with its connection status.

gemini mcp list

If no browser opens, start Gemini CLI and type /mcp auth koboshi.

--scope user saves Koboshi in your user settings, ~/.gemini/settings.json, instead of one project’s settings (Gemini CLI docs, read 2026-10-07).

Our end-to-end runs so far cover Claude Code. We have not run Codex or Gemini CLI end to end yet; their commands follow each maker’s own documentation.

Using Claude? Connect it here. (Since October 2026, ChatGPT saves to Koboshi only on Business, Enterprise and Edu plans.)

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