Show HN: Slack CLI for Agents

#1

Post by nwparker » Thu, Feb 05, 2026, 9:38 PM UTC

Our team lives in Slack, but we don’t have access to the Slack MCP and couldn’t find anything out there that worked for us, so we coded our own agent-slack CLI

  * Can paste in Slack URLs
  * Token efficient
  * Zero-config (auto auth if you use Slack Desktop)

Auto downloads files/snippets. Also can read Slack canvases as markdown!

MIT License

Show HN: Slack CLI for Agents
github.com

Re: Show HN: Slack CLI for Agents

#2

Post by [deleted] » Thu, Feb 05, 2026, 9:38 PM UTC

[deleted]

Re: Show HN: Slack CLI for Agents

#3

Post by BlueOrigin50 » Thu, Feb 05, 2026, 11:09 PM UTC

Oh nice. I just installed and it works pretty well. It wasn't able to find the user names on the thread though.

Re: Show HN: Slack CLI for Agents

#4

Post by nwparker » Thu, Feb 05, 2026, 11:13 PM UTC

BlueOrigin50 wrote: post #3

Oh nice. I just installed and it works pretty well. It wasn't able to find the user names on the thread though.

You could ask it to convert the names (and it would), since it uses the slack internal userIds

But I will add a flag to do for `slack message read/list`, since it makes sense.

Re: Show HN: Slack CLI for Agents

#5

Post by slopusila » Fri, Feb 06, 2026, 10:41 PM UTC

how about support for "auth import-token" so you dont need to keep SLACK_TOKEN in env

Re: Show HN: Slack CLI for Agents

#6

Post by Hansenq » Fri, Feb 06, 2026, 11:17 PM UTC

Oh this is smart! Reading where Slack stores the local data in your filesystem instead of using their API/MCP (which they charge for).

Very clever; similar to OpenAI launching Atlas when websites start blocking bot requests--just build your own browser so your bot becomes an actual user.

Re: Show HN: Slack CLI for Agents

#7

Post by Wuzzy » Fri, Feb 06, 2026, 11:53 PM UTC

I believe in an MCP-less future of agent-service interactions and have recently submitted this general alternative (which also supports Slack) based on curl: https://github.com/imbue-ai/latchkey

With that said, a specialized tool like this will almost certainly work better if Slack is the only service you want your agents to interact with. I like that the auth is transparent.

Re: Show HN: Slack CLI for Agents

#8

Post by apimade » Sat, Feb 07, 2026, 12:47 AM UTC

Warning: in Enterprise (Grid) your account will likely be flagged as hijacked, and all of your sessions will be killed.

Slack implemented session hijacking detection a while ago, and using LLM’s without throttling will very likely result in alerts. If you’re on Enterprise; I’d suggest re-slopping a re-implementation of this with ghost Chrome puppeteer.

Re: Show HN: Slack CLI for Agents

#9

Post by impulser_ » Sat, Feb 07, 2026, 1:27 AM UTC

I'm glad more people are catching onto lightweight CLI tools and using skills to give llms more tools. It's way better than MCP. I been doing this for awhile now and it's just the best way to gets LLMs to do things with APIs built for humans.

Re: Show HN: Slack CLI for Agents

#10

Post by mogili1 » Sat, Feb 07, 2026, 2:41 AM UTC

apimade wrote: post #8

Warning: in Enterprise (Grid) your account will likely be flagged as hijacked, and all of your sessions will be killed. Slack implemented session hijacking detection a while ago, and using LLM’s without throttling will very likely result in alerts. If you’re on Enterprise; I’d suggest re-slopping a re-implementation of this with ghost Chrome puppeteer.

I ended up vibe coding a script that uses slack token from the browser to download my messages locally. It's not been flagged yet. But my account got flagged when I tried slackdump.