Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| SLACK_BOT_TOKEN | Yes | Bot token from Slack app (xoxb-...) | |
| SLACK_DEFAULT_CHANNEL | No | Default channel for notifications |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tasks | {
"list": {},
"cancel": {},
"requests": {
"tools": {
"call": {}
},
"prompts": {
"get": {}
},
"resources": {
"read": {}
}
}
} |
| tools | {
"listChanged": true
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| ask_user | Send a question to the user via Slack and wait for their reply. Use this when you need user input or a decision. The user will be notified and can reply in the Slack thread. This will BLOCK until the user replies or the timeout is reached. IMPORTANT - NON-BLOCKING USAGE: To avoid blocking, run this tool in a background agent/task. Example with Claude Code's Task tool: Task(
prompt="Call ask_user with question='Your question here'",
run_in_background=True
) This lets you continue working while waiting for the Slack reply. You'll be notified when the background task completes with the user's response. Args: question: The question to ask the user. channel: Channel name or ID. Uses SLACK_DEFAULT_CHANNEL if not specified. context: Optional context to include (e.g., what you're working on). timeout_minutes: How long to wait for a reply (default 5 minutes, max 30). Returns: Dict with success status and user's reply text if received. |
| send | Send a message to a Slack channel or thread. Args: message: Message text. Supports Slack mrkdwn formatting. channel: Channel name or ID. Uses SLACK_DEFAULT_CHANNEL if not specified. thread_ts: Thread timestamp to reply in a thread. urgency: Message urgency level. 'critical' adds @here mention. mention_user: If True, @mentions the configured user (requires SLACK_USER_ID). Returns: Dict with success status and message details. |
| get_thread_replies | Get replies in a Slack thread. Use this to check for new messages in a thread you started. Args: channel: Channel ID containing the thread. thread_ts: Timestamp of the parent message. since_ts: Only return messages after this timestamp (optional). Returns: Dict with success status and list of replies. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |