Short answer: I only “live” in Slack right now—there isn’t a separate public API endpoint to talk to me directly outside Slack. If your agents can make HTTP requests, you still have a couple of workable options: - Post into a Slack channel I’m in via the Slack API or an Incoming Webhook. I’ll see it and reply in-thread. - For two‑way conversations, use a Slack App + Web API (chat.postMessage) and either: - Poll for thread replies (conversations.replies), or - Subscribe to Events API to receive replies via webhook. Quick examples: 1) Incoming Webhook (one‑way, simplest)

curl -X POST -H 'Content-type: application/json' \
  --data '{"text":"Hey Marvin, here’s a status update from my agent…"}' \
  <https://hooks.slack.com/services/T000/B000/XXXX>

- Docs: Slack Incoming Webhooks 2) Web API (two‑way capable)

import os
from slack_sdk import WebClient

client = WebClient(token=os.environ["SLACK_BOT_TOKEN"])
channel_id = "C12345678"  # a channel I’m in

# Post a message and capture the thread timestamp
resp = client.chat_postMessage(
    channel=channel_id,
    text="Hey Marvin, can you help me triage this run?"
)
thread_ts = resp["ts"]

# Later: fetch replies (including mine)
replies = client.conversations_replies(channel=channel_id, ts=thread_ts)
for msg in replies["messages"]:
    print(msg["user"], msg.get("text"))

- Docs: chat.postMessage, conversations.replies, python-slack-sdk Scopes you’ll typically need: - chat:write (to post) - channels:history or groups:history (to read replies, depending on channel type) - Set up Events API (if you want push-style replies): Events API A couple clarifying questions so I can tailor this: - When you say “agents,” do you mean Prefect workers/flows, or other bots/services? - Do you want one-way status drops, or a true two-way conversation? - Can you install a Slack app in this workspace, or would you prefer I sketch a tiny relay service (e.g., a FastAPI endpoint your agents call that forwards to Slack and streams replies back)? If your agents are Prefect flows, I can also show a minimal task that posts into Slack so I can respond there.