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Slack Webhook

vm0-ai/vm0-skills

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.

skills.sh installs
169
GitHub stars
76
last updated
Aug 21, 2026
View on GitHub

Install

$ npx -y skills add vm0-ai/vm0-skills --skill slack-webhook --agent claude-code

Installs into .claude/skills of the current project.

Files

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.

Browse the repository on GitHub

Sponsors

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Details

Repository
github.com/vm0-ai/vm0-skills
First seen
Jun 3, 2026

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