letta-ai/skills · tools/slack/SKILL.md

agent-slack skillB

agent-slack is agent-read markdown (skill) from letta-ai/skills: Slack automation CLI — read/send/search messages, browse threads and channels, manage channels, download attachments, look up users, and run workflows..

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/agent-slack@git:20260422.d32735f
Exact content
mdr add letta-ai/skills/agent-slack@sha256:c67caed7d390a635

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_3hrzovrjrbrfjs6v.svg)](https://markdownregistry.com/a/art_3hrzovrjrbrfjs6v)

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Versions

versioncommittedcommitsizeaudit
git:20260422.d32735f latest2026-04-22 d32735f 7,445 BB view · diff
git:20260131.8aed7cb2026-01-31 8aed7cb 3,821 BA view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No curl or wget piped into a shell (matched: curl -fsSL https://raw.githubusercontent.com/stablyai/agent-slack/main/install.sh | sh)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7445 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 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_3hrzovrjrbrfjs6v
GET https://markdownregistry.com/api/v1/resolve?ref=letta-ai/skills/agent-slack
GET https://markdownregistry.com/api/v1/blob/c67caed7d390a6357c42dd4707d049bd1fc4a1a9471878dc9654502fa222e9e0

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