agent-slack
Slack automation CLI — read/send/search messages, browse threads and channels, manage channels, download attachments, look up users, and run workflows.
What this skill does
# 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 ``` If you have multiple workspaces, pass `--workspace "myteam"` to commands to disambiguate. ## Canonical workflow (given a Slack message URL) 1. Fetch a single message (plus thread summary, if any): ```bash agent-slack message get "https://workspace.slack.com/archives/C123/p1700000000000000" ``` 2. If you need the full thread: ```bash agent-slack message list "https://workspace.slack.com/archives/C123/p1700000000000000" ``` ## Browse recent channel messages To see what's been posted recently in a channel (channel history): ```bash agent-slack message list "general" --limit 20 agent-slack message list "C0123ABC" --limit 10 agent-slack message list "general" --with-reaction eyes --oldest "1770165109.000000" --limit 20 agent-slack message list "general" --without-reaction dart --oldest "1770165109.000000" --limit 20 ``` This returns the most recent messages in chronological order. Use `--limit` to control how many (default 25). When using `--with-reaction` or `--without-reaction`, you must also pass `--oldest` to bound scanning. ## Attachments (snippets/images/files) `message get/list` and `search` auto-download attachments to `~/.agent-slack/tmp/downloads/` and return metadata in `message.files[]` (including `name` and `path`). Failed downloads include a `message.files[].error` field. ## Draft a message (browser editor) Opens a Slack-like rich-text editor in the browser for composing messages with formatting toolbar (bold, italic, strikethrough, links, lists, quotes, code, code blocks). After sending, shows a "View in Slack" link. ```bash agent-slack message draft "general" agent-slack message draft "general" "initial text" agent-slack message draft "https://workspace.slack.com/archives/C123/p1700000000000000" ``` ## Send, edit, delete, or react ```bash agent-slack message send "https://workspace.slack.com/archives/C123/p1700000000000000" "I can take this." agent-slack message send "alerts-staging" "here's the report" --attach ./report.md agent-slack message edit "https://workspace.slack.com/archives/C123/p1700000000000000" "I can take this today." agent-slack message delete "https://workspace.slack.com/archives/C123/p1700000000000000" agent-slack message send "general" "Here's the plan: - Step 1: do the thing - Step 2: verify it worked - Sub-step: check logs" agent-slack message react add "https://workspace.slack.com/archives/C123/p1700000000000000" "eyes" agent-slack message react remove "https://workspace.slack.com/archives/C123/p1700000000000000" "eyes" ``` Channel mode for edit/delete requires `--ts`: ```bash agent-slack message edit "general" "Updated text" --workspace "myteam" --ts "1770165109.628379" agent-slack message delete "general" --workspace "myteam" --ts "1770165109.628379" ``` Attach options for `message send`: - `--attach <path>` upload a local file (repeatable) ## List channels + create/invite users ```bash agent-slack channel list agent-slack channel list --user "@alice" --limit 50 agent-slack channel list --all --limit 100 agent-slack channel new --name "incident-war-room" agent-slack channel new --name "incident-leads" --private agent-slack channel invite --channel "incident-war-room" --users "U01AAAA,@alice,[email protected]" agent-slack channel invite --channel "incident-war-room" --users "[email protected]" --external agent-slack channel invite --channel "incident-war-room" --users "[email protected]" --external --allow-external-user-invites ``` For `--external`, invite targets must be emails. By default, invitees are external-limited; add `--allow-external-user-invites` to allow them to invite other users. ## Search (messages + files) Prefer channel-scoped search for reliability: ```bash agent-slack search all "smoke tests failed" --channel "alerts" --after 2026-01-01 --before 2026-02-01 agent-slack search messages "stably test" --user "@alice" --channel general agent-slack search files "testing" --content-type snippet --limit 10 ``` ## Multi-workspace guardrail (important) If you have multiple workspaces configured and you use a channel **name** (e.g. `general`), pass `--workspace` (or set `SLACK_WORKSPACE_URL`) to avoid ambiguity: ```bash agent-slack message get "general" --workspace "https://myteam.slack.com" --ts "1770165109.628379" agent-slack message get "general" --workspace "myteam" --ts "1770165109.628379" ``` ## DM / group DM channels Get the channel ID for a DM or group DM, useful for sending messages to a group of users: ```bash agent-slack user dm-open @alice @bob agent-slack user dm-open U01AAAA U02BBBB U03CCCC ``` ## Mark as read Mark a channel, DM, or group DM as read up to a given message: ```bash agent-slack channel mark "https://workspace.slack.com/archives/C123/p1700000000000000" agent-slack channel mark "general" --workspace "myteam" --ts "1770165109.628379" agent-slack channel mark "D0A04PB2QBW" --workspace "myteam" --ts "1770165109.628379" ``` To make a specific message appear unread, set `--ts` to just before it (subtract `0.000001`). This moves the read cursor so that message and everything after it appear as new: ```bash agent-slack channel mark "general" --workspace "myteam" --ts "1770165109.628378" ``` ## Workflows Discover and run Slack workflows bookmarked in channels: ```bash # List workflows in a channel agent-slack workflow list "#ops" # Preview trigger metadata (no side effects) agent-slack workflow preview "Ft123ABC" # Get workflow definition including form fields and steps agent-slack workflow get "Ft123ABC" agent-slack workflow get "Wf456DEF" # Trip a workflow trigger agent-slack workflow run "Ft123ABC" --channel "#ops" ``` ## Canvas + Users ```bash agent-slack canvas get "https://workspace.slack.com/docs/T123/F456" agent-slack user list --workspace "https://workspace.slack.com" --limit 100 agent-slack user get "@alice" --workspace "https://workspace.slack.com" ``` ## References - references/commands.md: full command map + all flags - references/targets.md: URL vs `#channel` targeting rules - references/output.md: JSON output shapes + download paths
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