letta-ai/skills · tools/imsg/SKILL.md

imsg skillA

imsg is agent-read markdown (skill) from letta-ai/skills: iMessage/SMS CLI for listing chats, history, and sending messages via Messages.app..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add letta-ai/skills/imsg@git:20260422.d32735f
Exact content
mdr add letta-ai/skills/imsg@sha256:3ae0dcd98a990b6c

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_jzzlpvlrbyt6sbns.svg)](https://markdownregistry.com/a/art_jzzlpvlrbyt6sbns)

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Versions

versioncommittedcommitsizeaudit
git:20260422.d32735f latest2026-04-22 d32735f 2,127 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • 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

GitHub

letta-ai/skills · 143 stars · license NOASSERTION · pushed 2026-09-13 · 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

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.