post-to-slack SKILL.md skillA
post-to-slack from atman-33/workhub is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add atman-33/workhub/post-to-slack@git:20260901.114c610Pins git:20260901.114c610 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- atman-33/workhub
- Path
plugins/authoring/skills/post-to-slack/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260901.114c610, committed Sep 1, 2026
- Size
- 2,858 bytes
- Repository stars
- 3
- License
- MIT
Post a message to a Slack channel, resolving channel/user names to IDs and adding an optional @mention or thread reply. Use when the user wants to post, share, or notify something in Slack, or when another skill needs to deliver its output to a Slack channel.
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
# Post to Slack Resolves a channel name (or a user name for a mention) to its Slack ID before posting — the Slack MCP connector's send/search tools need IDs, not display names, and IDs are not stable across workspaces. ## Steps 1. Determine the message body and the target channel. If the caller (a direct user request, or another skill such as `report-pbl-progress`) already gives an explicit channel ID (`C...`) and/or an already-resolved mention (`<@U...>`), skip straight to step 4 — don't re-resolve what's already unambiguous. 2. If the channel is given by name rather than ID, resolve it with the Slack MCP connector's `slack_search_channels` tool and take the matching channel's ID. If more than one channel plausibly matches, ask the user rather than guessing. 3. If a mention is wanted and given by name rather than user ID, resolve it with `slack_search_users` and format it as `<@USERID>` inline in the message text — Slack does not render `@name` as a mention, only the raw `<@ID>` form works. 4. Post with `slack_send_message` (`thread_ts` for a thread reply, `reply_broadcast` to also surface a thread reply in the channel). Return …
Read the whole file at its exact version.
How to install
mdr add atman-33/workhub/post-to-slack@sha256:f6c5ac9e2f48873cThe line at the top of this page pins the label git:20260901.114c610, 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_masakg5gmehpwlhb)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 1, 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 (2858 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
atman-33/workhub · 3 stars · license MIT · pushed 2026-10-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_masakg5gmehpwlhb GET https://markdownregistry.com/api/v1/resolve?ref=atman-33/workhub/post-to-slack GET https://markdownregistry.com/api/v1/blob/f6c5ac9e2f48873c9618c8773301dbede1938efc5f60e78dc51b54d2c91db134
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.