Slack Gateway

This tool interacts with the Slack API to read channel history, read message threads, or post messages on behalf of the Slack Advisor skill. It accepts an op value (read_history, read_thread, post_message), a required channel_id, and optional ts, text, limit, and cursor parameters to control which channel or thread is targeted, what content is posted, and how pagination is handled. The worker LLM must use these inputs and any JSON payload inputs from the caller as authoritative and produce an output object that strictly validates against the system-provided structured output schema, with correct field names, types, enums, and ranges and no extra keys.