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Open-Source CLI Tool Lets AI Agents Access Slack Without Building a Slack App

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A developer has released SlackCLI, an open-source command-line binary that allows AI agents to interact with Slack workspaces without requiring a dedicated Slack app or OAuth approval process. The tool enables agents to read messages, search channels, reply to threads, and access Canvas documents by running simple shell commands with structured JSON output. Authentication is handled via a browser-based login that stores session tokens locally on the user's machine, with no data sent externally. SlackCLI is designed to integrate easily with most AI agent frameworks, which typically work best with plain commands and clean, parseable output. The project is unofficial and has no affiliation with Slack Technologies.

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Open-Source CLI Tool Lets AI Agents Access Slack Without Building a Slack App · ShortSingh