imsg

imsg is a skill for Claude Code, Codex from moltis-org/moltis. It costs 21 tokens per session (703 once invoked), scanned A, original, MIT.

A command-line tool for reading and sending iMessages or SMS messages through the macOS Messages app.

In plain words
What is it for?
Listing chats, viewing message history and attachment details, watching for new messages, and sending messages when the required macOS permissions are available.
Why use it?
It lets the agent inspect conversations and send messages using the Mac account already signed in to Messages.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Listing chats, viewing message history and attachment details, watching for new messages, and sending messages when the required macOS permissions are available.

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Install with agentmods
npx agentmods add skills/moltis-org/moltis/imsg
About the project

Moltis is a persistent personal agent server written in Rust that runs on hardware controlled by its user. It provides an AI agent with sandboxed command execution, model-provider connections, memory, voice, scheduling, messaging integrations, browser automation, and MCP tools. Its catalogue add-ons extend the agent’s workflows and available tools.

moltis-org/moltis · 2,847 stars · on GitHub · moltis.org

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add moltis-org/moltis --skill imsg
Clone the repo
git clone --depth 1 https://github.com/moltis-org/moltis

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for imsg

README.md
[![agentmods](https://agentmods.dev/badge/skills/moltis-org/moltis/imsg.svg)](https://agentmods.dev/skills/moltis-org/moltis/imsg)
Your own site
<a href="https://agentmods.dev/skills/moltis-org/moltis/imsg"><img src="https://agentmods.dev/badge/skills/moltis-org/moltis/imsg.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 703 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00021 $0.00703
Opus 5 $0.00010 $0.00351
Sonnet 5 $0.00004 $0.00141
Haiku 4.5 $0.00002 $0.00070

Measured 7d ago against content hash b59ce21e9fde, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

imsg scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

crates/skills/src/assets/messaging/imsg/SKILL.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

imsg

Use imsg to read and send iMessage/SMS via macOS Messages.app.

When to Use

USE this skill when:

  • User explicitly asks to send iMessage or SMS
  • Reading iMessage conversation history
  • Checking recent Messages.app chats
  • Sending to phone numbers or Apple IDs

When NOT to Use

DON'T use this skill when:

  • Telegram messages → use message tool with channel:telegram
  • Signal messages → use Signal channel if configured
  • WhatsApp messages → use WhatsApp channel if configured
  • Discord messages → use message tool with channel:discord
  • Slack messages → use slack skill
  • Group chat management (adding/removing members) → not supported
  • Bulk/mass messaging → always confirm with user first
  • Replying in current conversation → just reply normally (Moltis routes automatically)

Requirements

  • macOS with Messages.app signed in
  • Full Disk Access for terminal
  • Automation permission for Messages.app (for sending)

Common Commands

List Chats

imsg chats --limit 10 --json

View History

# By chat ID
imsg history --chat-id 1 --limit 20 --json

# With attachments info
imsg history --chat-id 1 --limit 20 --attachments --json

Watch for New Messages

imsg watch --chat-id 1 --attachments

Send Messages

# Text only
imsg send --to "+14155551212" --text "Hello!"

# With attachment
imsg send --to "+14155551212" --text "Check this out" --file /path/to/image.jpg

# Specify service
imsg send --to "+14155551212" --text "Hi" --service imessage
imsg send --to "+14155551212" --text "Hi" --service sms

Service Options

  • --service imessage — Force iMessage (requires recipient has iMessage)
  • --service sms — Force SMS (green bubble)
  • --service auto — Let Messages.app decide (default)

Safety Rules

  1. Always confirm recipient and message content before sending
  2. Never send to unknown numbers without explicit user approval
  3. Be careful with attachments — confirm file path exists
  4. Rate limit yourself — don't spam

Read the full file on GitHub · 108 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 108 lines · 21 tokens per session scan A b59ce21e9fde

Subscribe to this mod's changes

imsg is a skill published in the GitHub repository moltis-org/moltis (2,847 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 703 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.