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From casper
Automates Slack: search channels, fetch/read messages, create channels, and AI-categorize content. Use for channel management, message history, or internal comms analysis.
npx claudepluginhub casper-studios/casper-marketplace --plugin casperHow this skill is triggered — by the user, by Claude, or both
Slash command
/casper:slack-automationThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Interact with Slack workspaces for channel management, message reading, and content analysis. All operations are read-only unless creating channels.
Automates Slack messaging to channels/DMs, conversation search, channel/user management, reactions, and threads using Composio toolkit via Rube MCP.
Handles Slack channel and thread messaging with context-aware session management. Reads messages, sends replies, searches channels/users, drafts, and schedules via Slack MCP tools.
Automates Slack operations like messaging channels/users, searching conversations, channel/user lookup, and reactions via Composio toolkit and Rube MCP. Useful for Slack workflow integrations.
Share bugs, ideas, or general feedback.
Interact with Slack workspaces for channel management, message reading, and content analysis. All operations are read-only unless creating channels.
What do you need?
│
├── Search for channels by name
│ └── references/search.md
│ └── Script: scripts/slack_search.py search
│
├── Read messages from a channel
│ └── references/fetch-news.md
│ └── Script: scripts/fetch_slack_news.py
│
├── Create a new channel
│ └── references/create-channel.md
│ └── Script: scripts/create_slack_channel.py
│
└── Categorize/analyze messages
└── references/categorize.md
└── Script: scripts/categorize_slack_messages.py
# Required in .env
SLACK_BOT_TOKEN=xoxb-your-bot-token
| Scope | Purpose |
|---|---|
channels:read | List public channels |
channels:history | Read public channel messages |
groups:read | List private channels |
groups:history | Read private channel messages |
channels:manage | Create channels |
python scripts/slack_search.py search "internal" --limit 10
python scripts/slack_search.py read "internal-client" --days 7
python scripts/create_slack_channel.py "project-alpha" --private
For client channels: internal-{client-name}
internal-microsoft, internal-acme-corpFree - Slack API has no per-request cost. Rate limited to ~50 requests/minute.
SLACK_BOT_TOKEN in .env file (never commit to git)xoxb- - never expose in logs or outputchannels:read - List public channels (read-only)channels:history - Read public channel messages (read-only)groups:read - List private channels bot is in (read-only)groups:history - Read private channel messages (read-only)channels:manage - Create channels (write access)Symptoms: "channel_not_found" error when reading or posting Cause: Invalid channel ID, bot not in channel, or private channel Solution:
slack_search.py search)/invite @botname)Symptoms: "missing_scope" or "not_allowed_token_type" error Cause: Bot token missing required OAuth scopes Solution:
channels:read, channels:history, etc.xoxb-)Symptoms: "invalid_auth" or "token_revoked" error Cause: OAuth token expired, revoked, or incorrectly configured Solution:
.env for correct SLACK_BOT_TOKEN valueSymptoms: "ratelimited" error or 429 status code Cause: Too many API requests in short period Solution:
Symptoms: Can't read private channel despite having scopes Cause: Bot not added to the private channel Solution:
/invite @botnamegroups:read and groups:history scopes are addedSkills: slack-automation → content-generation Use case: Summarize internal news for weekly newsletter Flow:
Skills: slack-automation → transcript-search Use case: Find related meetings when researching Slack discussions Flow:
Skills: slack-automation → google-workspace Use case: Archive categorized Slack summaries to Google Drive Flow: