What is outbox?
outbox is a Claude Code mod by charlie947 that holds every message Claude tries to send (WhatsApp, email, Slack) until you read it, see who it goes to, and press Send. It is listed under Interface and has 6 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | charlie947 |
| Repository | charlie947/mod-maker |
| Popularity | 6 GitHub stars |
| Category | Interface |
| Security | Low risk (92/100) |
| Rank | #633 of 5,272 Claude Code mods; #242 in Interface |
| Last commit | 2026-10-04 |
| Stars this week | +3 |
| Hooks | 4 events |
| Sees | every tool call |
| Draws on | Pane |
Is outbox safe to install?
outbox scores 92/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 6 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Drives Claude (model calls, prompts) | Note |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.now | |
$.command.register | |
$.prompt.fill | writes the prompt box |
$.state.get | |
$.state.set | |
$.tool.call | drives Claude |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install outbox?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/charlie947/mod-maker claude plugin validate ./mod-maker/plugins/outbox
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add charlie947/mod-maker && claude plugin install outbox@charlie-free-mods
Or ask Claude to set it up
Paste this into Claude Code and it installs outbox for you:
Install the "outbox" Claude Code mod from https://github.com/charlie947/mod-maker/tree/main/plugins/outbox. Run claude plugin validate on it first and show me what it can access before you enable it.
More from charlie947/mod-maker
This repository has at least 9 Claude Code mods on MCPMods.
- brand-theme: Dresses Claude Code in your brand: a branded spinner, tool rows and question dialog, plus a band above the prompt with y (Low risk)
- done-ping: A desktop notification with a sound when Claude finishes a long answer or may need your OK (Review before installing)
- mission-control: A live panel above your prompt: the plan as a stage bar, what Claude is doing in plain English, your asks ticked off, an (Low risk)
- mod-maker: Find what you ask Claude again and again, then build a mod that does it for you: /mod-audit, /mod-build, /mod-check and (High risk)
- office: A pixel-art office in a local web page: every Claude session gets a desk, walks to the filing cabinet when it reads, typ (High risk)
- open-loops: Live pane of every ask you make in a session, ticked only with proof. Ask-splitter: right after you send a prompt, a ban (Review before installing)
- plain-reply: Grades every reply for length, long sentences and jargon, and offers a one-click 'Say it simpler' draft when it goes ove (Low risk)
- pre-build-check: Before Claude builds anything, it re-reads your own CLAUDE.md rules and keeps a reference's structure without copying it (Review before installing)