MCP.Market

slack skill

by openclaw·openclaw/openclaw·394k stars·MIT

Slack messaging workflows through OpenClaw's message tool.

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Is the slack skill safe?

Clean: nothing in its files matched our rules. We read 1 file in the folder on 2026-10-25.

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Install the slack skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/openclaw/openclaw.git /tmp/openclaw
mkdir -p ~/.claude/skills
cp -r /tmp/openclaw/extensions/slack/skills/slack ~/.claude/skills/slack
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Slack

Use the message tool with channel: "slack". The tool schema lists the actions enabled for the current Slack account; do not assume an action that is not present.

Workflow

  • Prefer stable Slack IDs from context. Sends outside the current conversation use channel: or user: targets.
  • Keep replies in the current thread unless the user asks for a top-level post. For another thread, pass its Slack timestamp as threadId; use the same timestamp as messageId for message-specific actions.
  • Before editing, deleting, pinning, or reacting to an ambiguous message, read the conversation and resolve its exact ID.
  • When multiple Slack accounts are configured, pass accountId rather than guessing.
  • Confirm destructive deletes when the target or intent is unclear.

Slack formatting, mentions, and available actions are described automatically by the current message tool hints. Follow those hints instead of maintaining a second action catalog here.

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