Question 1

How to handle Slack slash commands with FastAPI using Slackers?

Accepted Answer

Slackers sets up a /commands endpoint that emits events based on command names. Use the @commands.on() decorator to listen for specific commands, like @commands.on('engage') for /engage, and access the payload for custom logic.

Question 2

Slackers vs slack-bolt: which is better for Python Slack apps?

Accepted Answer

Slackers is lightweight and FastAPI-specific, ideal for simple webhook handling with event-driven architecture. Slack-bolt is more feature-rich with official Slack support, including OAuth and socket mode, but heavier. Choose Slackers for FastAPI integration; slack-bolt for comprehensive features.

Question 3

Can I use async functions with Slackers event handlers?

Accepted Answer

Yes, Slackers supports async event handlers using pyee's Async event emitter. However, errors in async handlers must be caught via a separate @commands.on('error') or similar event listener, as shown in the async example.

Question 4

How to set up custom HTTP responses for Slack actions in Slackers?

Accepted Answer

Use the @responder decorator to define custom response handlers that return Starlette responses, like JSONResponse. Ensure only one responder per request, and note that events are emitted asynchronously without awaiting the response.

Question 5

Does Slackers automatically handle the Slack Events API challenge?

Accepted Answer

Yes, Slackers detects and automatically responds to the challenge request when setting up event subscriptions, so no manual code is needed for verification, as mentioned in the events section.

Question 6

What endpoints does Slackers set up for Slack interactions?

Accepted Answer

Slackers provides endpoints at /events for the Events API, /actions for interactive components, and /commands for slash commands. These can be prefixed using FastAPI routing, as shown in the server setup example.

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