agent-slack SKILL.md skillB
agent-slack 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/agent-slack@git:20260422.d32735fPins git:20260422.d32735f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- letta-ai/skills
- Path
tools/slack/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260422.d32735f, committed Apr 22, 2026
- First version recorded
- Jan 31, 2026
- Size
- 7,445 bytes
- Repository stars
- 156
- License
- a license file GitHub does not identify
Slack automation CLI — read/send/search messages, browse threads and channels, manage channels, download attachments, look up users, and run workflows.
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
# Slack automation with `agent-slack` `agent-slack` is a CLI binary on `$PATH`. Invoke directly (e.g. `agent-slack user list`). ## Setup ### 1. Install the CLI If `agent-slack` is not found on `$PATH`, install it: ```bash curl -fsSL https://raw.githubusercontent.com/stablyai/agent-slack/main/install.sh | sh ``` Alternatives: `npm i -g agent-slack` (requires Node >= 22.5) or `nix run github:stablyai/agent-slack`. ### 2. Authenticate with Slack If you have **Slack Desktop** installed and signed in, authentication is automatic — no setup needed. Run this to verify: ```bash agent-slack auth test ``` If that fails (or you don't have Slack Desktop), try importing credentials from your browser: ```bash # Try Chrome first, then Firefox agent-slack auth import-chrome agent-slack auth test ``` ```bash agent-slack auth import-firefox agent-slack auth test ``` If neither works, you can set tokens manually via environment variables: ```bash export SLACK_TOKEN="xoxc-..." # browser token export SLACK_COOKIE_D="xoxd-..." # browser cookie agent-slack auth test ``` ### 3. Verify Check which workspaces are configured: ```bash agent-slack auth whoami ``` …
Read the whole file at its exact version.
How to install
mdr add letta-ai/skills/agent-slack@sha256:c67caed7d390a635The 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_3hrzovrjrbrfjs6v)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jan 31, 2026 and Apr 22, 2026, about one every 82 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260422.d32735f latest | 2026-04-22 | d32735f | 7,445 B | B | view · diff |
| git:20260131.8aed7cb | 2026-01-31 | 8aed7cb | 3,821 B | A | view |
Audit of the latest version
- 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
letta-ai/skills · 156 stars · license a license file GitHub does not identify · pushed 2026-10-01 · 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
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.