Pin Memo Claude Code mod: Claude Code pinned notes and todos by the prompt

Pin Memo is a community mod by YeonwooSung (GitHub), one plugin in the my-claude-code-mods collection. It gives Claude Code pinned notes: you type /pin Remember to run tests and the note stays in a teal bordered band above the prompt, so it is still in view after the conversation scrolls past it.

Notes can also be todos. /pin - [ ] Check login flow adds an unchecked item and /pin - [x] Update docs adds a finished one. Finished todos stay visible, dimmed and struck through, and the band title counts how many items are pinned and how many are done. You tick an item off by clicking its [ ] box, by focusing the band with ctrl+x tab, or with /pin toggle <id>.

The list belongs to the session. It is saved in the plugin's own store under the working folder and session ID, so resuming the same session in the same folder restores the notes, while a new session or /clear starts with an empty list. The mod is close to our After mod in spirit, but it is a plain list: it does not schedule anything and never sends a note to Claude. The band is drawn on the terminal and Desktop app; the author notes that VS Code chat and headless sessions can use the command and the saved list.

The recording starts Claude Code with the mod loaded in the small demo project and runs four /pin commands, with no model turn. First /pin Remember to run tests pins a plain note: Claude Code confirms "메모 #1 고정" (note #1 pinned) and the band appears with the title "핀 1 (완료 0)". Then two todos are added, - [ ] Check login flow and - [ ] Update docs, and the band grows to three rows. Finally /pin toggle 3 ticks the last todo: the title changes to "핀 3 (완료 1)" and the row is dimmed with a strikethrough. In the recording the checkbox buttons are drawn on their own line above each todo's text.

Use any of the methods in the install block; they install straight from the author's own marketplace. The band appears as soon as you pin something, and /pin is registered when the session starts.

The adapter in hooks/register.tsx registers /pin on session.start, answers it on command.run, and renders the band at the AbovePrompt site. The storage key is built from the folder and the session ID, in hooks/core/controller.ts:

export function storeKey(cwd: string, id: string): string {
  if (!cwd || !id || !/^(?:\/|[A-Za-z]:[\\/])/.test(cwd)) throw new Error('세션 폴더와 ID를 확인할 수 없습니다.')
  // ...trailing slashes are trimmed from the folder...
  return `pin-memo:v1:${JSON.stringify([folder, id])}`
}

Commands are parsed by pure functions in hooks/core/memo.ts and run one after another through a queue, so rapid commands all persist. A change is written to the store before it is reported as done; if the write fails the previous state stays and an error toast appears. A saved document that fails validation is shown as an error and is not overwritten until you run /pin clear. Old checkbox handles are checked against the current session, so a stale click cannot change another session's list. When a survey is open above the prompt, the band steps aside.

There are no options in /config. The commands are /pin <memo>, /pin add <memo> (for text that starts with a command word), /pin list, /pin toggle|check|uncheck|remove <id>, /pin edit <id> <memo>, /pin clear and /pin help. Editing a note without a checkbox marker turns a todo back into a plain note. To change the look, edit the colors in register.tsx (#62B8AD for the border, #1D2029 for the background) or the Korean labels in hooks/core/view.ts and hooks/core/memo.ts.

We read every file the plugin can execute before running it: .claude-plugin/plugin.json, hooks/hooks.json, hooks/register.tsx, hooks/core/controller.ts, memo.ts and view.ts, plus the tests. The plugin has no package.json, install script, binary or bundled code, and nothing was left unread.

Changes the UI covers the band above the prompt. Adds a command covers /pin. The mod uses $.session.cwd and $.session.id to build its storage key, and $.store to save the list. It does not use the network, run processes or shell commands, write files, read environment variables or secrets, send telemetry, run a background service, block or rewrite tool calls or prompts, or add text to the model's context. The one thing to know is that your notes are stored as plain JSON in the plugin store, so do not pin secrets. The repository has an Apache-2.0 LICENSE at its root, which allows redistribution. claude plugin validate reported no errors or warnings, and the author's 29 tests passed on Claude Code 2.1.303.

Checked with Claude Code 2.1.303 on macOS (validate, tests and the demo recording); the author's README names 2.1.292. If something looks wrong:

• Nothing appears: the band only shows once at least one note exists, so run /pin help and pin something.
• Notes are gone: a new session or /clear has its own list; resume the earlier session in the same folder to get the old one back. A folder reached through a different symlink counts as a different folder.
• The band does not show in VS Code chat or headless runs; /pin list still works there.
• A "session changed" or "cannot read the saved memo" message means the folder or session ID could not be read, or the saved document is damaged. Try the command again, or run /pin clear to reset a damaged list.
• Two processes editing the same session have no live sync, so the last write wins.