imsg SKILL.md skillA
imsg from letta-ai/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add letta-ai/skills/imsg@git:20260422.d32735fPins git:20260422.d32735f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- letta-ai/skills
- Path
tools/imsg/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260422.d32735f, committed Apr 22, 2026
- Size
- 2,127 bytes
- Repository stars
- 153
- License
- a license file GitHub does not identify
iMessage/SMS CLI for listing chats, history, and sending messages via Messages.app.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# imsg Use `imsg` to read and send iMessage/SMS via macOS Messages.app. ## Limitations - Group chat management (adding/removing members) is not supported - macOS only ## Requirements - macOS with Messages.app signed in - Full Disk Access for terminal - Automation permission for Messages.app (for sending) ## Common Commands ### List Chats ```bash imsg chats --limit 10 --json ``` ### View History ```bash # By chat ID imsg history --chat-id 1 --limit 20 --json # With attachments info imsg history --chat-id 1 --limit 20 --attachments --json # Filter by date imsg history --chat-id 1 --start 2026-01-01T00:00:00Z --json ``` ### Watch for New Messages ```bash imsg watch --chat-id 1 --attachments imsg watch --chat-id 1 --debounce 250ms ``` ### Send Messages ```bash # Send to phone number imsg send --to "+14155551212" --text "Hello!" # Send to existing chat by ID (useful for replies) imsg send --chat-id 86 --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 ``` …
Read the whole file at its exact version.
How to install
mdr add letta-ai/skills/imsg@sha256:3ae0dcd98a990b6cThe line at the top of this page pins the label git:20260422.d32735f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_jzzlpvlrbyt6sbns)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Apr 22, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2127 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
letta-ai/skills · 153 stars · license a license file GitHub does not identify · pushed 2026-10-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jzzlpvlrbyt6sbns GET https://markdownregistry.com/api/v1/resolve?ref=letta-ai/skills/imsg GET https://markdownregistry.com/api/v1/blob/3ae0dcd98a990b6c69dd71f3c8779ca21ffe97c2c13be1af6d8b3895883b38f7
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.