slack-notifications

Send agent notifications and capture approvals via Slack with threaded messaging.

59|12|Updated Feb 26, 2026

Search Tags:#agents #mcp #notifications #slack #approvals #threading #bot-token

Ready to run

npx skills add https://github.com/etylsarin/opencastle --skill slack-notifications-etylsarin

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: slack-notifications
Source: https://github.com/etylsarin/opencastle/tree/main/src/orchestrator/plugins/slack
Command: npx skills add https://github.com/etylsarin/opencastle --skill slack-notifications-etylsarin

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Connect agents to humans through Slack so agents can post progress updates, request approvals, and read user responses without manual context switching or ad-hoc messaging setups.

Core Features & Use Cases

MCP integration: Uses an stdio MCP server via @kazuph/mcp-slack to enable deterministic agent-to-Slack communication.
Messaging & threading: Post messages, create threads, read replies, and resolve channel IDs for reliable conversations and approval workflows.
Auth & safety: Supports bot token authentication via environment variables, scope guidance, and best practices to avoid leaking secrets.
Use Case: Post progress updates to #agent-updates, request an approval in #agent-approvals, and pick up the first reply from either Slack or the IDE chat to proceed.

Quick Start

Post a structured approval request to the configured Slack channel and poll the thread for the first reply while the agent continues other work.

Frequently Asked Questions about slack-notifications

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I send agent notifications to Slack from an MCP workflow?▼

The Skill integrates an stdio MCP server via @kazuph/mcp-slack to post agent progress updates and structured messages directly to Slack channels and direct messages.

Can I capture human approvals via Slack for agent workflows?▼

Yes, you can capture human approvals via Slack by posting structured approval requests to a channel, creating a message thread, and polling for the first reply while the agent continues working.

What Slack bot token authentication is required for MCP server integration?▼

Slack MCP server integration requires bot token authentication via the SLACK_MCP_XOXB_TOKEN environment variable, following scope guidance and best practices to avoid leaking secrets.

Does this Skill support Slack message threading and channel resolution?▼

Yes, this Skill supports Slack message threading and channel resolution, enabling agents to post messages, create threads, read replies, and reliably resolve channel IDs for conversation tracking.

What is the best way to handle agent progress updates and human approval requests without manual context switching?▼

The best way to handle agent updates and approvals without manual context switching is connecting agents to humans through Slack, allowing agents to post updates, request approvals, and read responses automatically.

Do I need a bot token to read replies from Slack threads in agent workflows?▼

Yes, you need a bot token configured via environment variables to authenticate the MCP server, allowing the agent to post messages, read replies from Slack threads, and pick up responses from IDE chat.