Slack Webhook

A straightforward wrapper around Slack's incoming webhooks for posting messages from Claude. You write JSON to a temp file and curl it to your webhook URL. The skill covers the basics: plain text, markdown formatting, blocks for richer layouts, and fields for structured data. One thing to know upfront is that each webhook is hardcoded to a single channel and you can't change the sender name or icon on the fly, those are set in your Slack app config. The rate limit is one message per second. If you need to read messages, delete posts, or work across multiple channels, you'll want the full Bot Token API instead. Good for fire and forget notifications when you don't need bidirectional conversation.