Let One Slack App Address Another
Use two Slack apps in one workspace for one-way delegation.
Use two Slack apps in one workspace for one-way delegation. The coordinator ignores bot messages; only the researcher opts in with respond_to_other_apps.
"""
Let One Slack App Address Another
=================================
Use two Slack apps in one workspace for one-way delegation. The coordinator
ignores bot messages; only the researcher opts in with respond_to_other_apps.
Prerequisites: COORDINATOR_SLACK_TOKEN, COORDINATOR_SLACK_SIGNING_SECRET, RESEARCHER_SLACK_TOKEN, RESEARCHER_SLACK_SIGNING_SECRET, RESEARCHER_SLACK_USER_ID, OPENAI_API_KEY
Run: .venvs/demo/bin/python cookbook/05_agent_os/17_slack/peer_agents.py
Try in Slack: Ask the coordinator to delegate a current research question
Slack scopes: app_mentions:read, assistant:write, chat:write, im:history (per app)
"""
from os import getenv
from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIResponses
from agno.os import AgentOS
from agno.os.interfaces.slack import Slack
from agno.tools.slack import SlackTools
from agno.tools.websearch import WebSearchTools
def required_env(name: str) -> str:
value = getenv(name)
if not value:
raise ValueError(f"{name} is required for this example")
return value
# ---------------------------------------------------------------------------
# Create Peer-app Slack AgentOS
# ---------------------------------------------------------------------------
coordinator_token = required_env("COORDINATOR_SLACK_TOKEN")
coordinator_secret = required_env("COORDINATOR_SLACK_SIGNING_SECRET")
researcher_token = required_env("RESEARCHER_SLACK_TOKEN")
researcher_secret = required_env("RESEARCHER_SLACK_SIGNING_SECRET")
researcher_user_id = required_env("RESEARCHER_SLACK_USER_ID")
db = SqliteDb(
id="slack-peer-agents-db",
db_file="tmp/slack_peer_agents.db",
)
coordinator = Agent(
id="slack-peer-coordinator",
name="Slack Peer Coordinator",
model=OpenAIResponses(id="gpt-5.5"),
db=db,
tools=[
SlackTools(
token=coordinator_token,
enable_send_message=True,
enable_send_message_thread=True,
enable_list_channels=False,
enable_get_channel_history=False,
enable_upload_file=False,
enable_download_file=False,
)
],
instructions=[
"Answer normal project questions directly.",
"For research-heavy work, use send_message_thread in the current Slack thread.",
f"Address the Researcher with the real Slack mention <@{researcher_user_id}>.",
"Include a self-contained research request after the mention.",
],
add_history_to_context=True,
num_history_runs=3,
markdown=True,
)
researcher = Agent(
id="slack-peer-researcher",
name="Slack Peer Researcher",
model=OpenAIResponses(id="gpt-5.5"),
db=db,
tools=[WebSearchTools()],
instructions=[
"You are the research specialist for another Slack app.",
"When the coordinator mentions you, research the request and cite sources.",
"Answer the human-readable thread without mentioning the coordinator again.",
],
add_history_to_context=True,
num_history_runs=3,
markdown=True,
)
agent_os = AgentOS(
id="slack-peer-agents-os",
description="AgentOS serving an asymmetric pair of peer Slack apps.",
agents=[coordinator, researcher],
interfaces=[
Slack(
agent=coordinator,
prefix="/coordinator",
token=coordinator_token,
signing_secret=coordinator_secret,
respond_to_other_apps=False,
),
Slack(
agent=researcher,
prefix="/researcher",
token=researcher_token,
signing_secret=researcher_secret,
respond_to_other_apps=True,
),
],
)
app = agent_os.get_app()
# ---------------------------------------------------------------------------
# Run Peer-app Slack AgentOS
# ---------------------------------------------------------------------------
if __name__ == "__main__":
agent_os.serve(app=app)RESEARCHER_SLACK_USER_ID is the Researcher app's bot user ID, used for mentions. Install both apps in the same workspace and invite both to the target channel. The Coordinator posts a delegation for the Researcher; only the Researcher is configured to respond to other apps, so the reply does not create an automatic back-and-forth loop.
Run the Example
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activatePrepare the Slack app
Follow Slack setup to create and install the app, obtain its bot token and signing secret, and configure its current agent experience. Add the bot scopes listed in this example's source docstring and reinstall after changing scopes. Subscribe to app_mention and message.im; configure interactivity for buttons and forms.
Install ngrok and run ngrok http 7777 in another terminal. Keep the tunnel running. After starting this example's server, use the callback paths listed on this page under your public HTTPS URL and complete Slack's verification challenge. Configure each app separately for a multi-app example.
Streaming requires the corresponding Slack app capability. The current Agno adapter initializes suggested prompts on the legacy assistant_thread_started event; the setup guide explains the new-app limitation. Keep only one standalone example on port 7777 at a time.
Install dependencies
uv pip install -U "agno[os,slack]" ddgs openaiExport environment variables
export OPENAI_API_KEY="your_openai_api_key_here"
export COORDINATOR_SLACK_TOKEN="your_coordinator_slack_token_here"
export COORDINATOR_SLACK_SIGNING_SECRET="your_coordinator_slack_signing_secret_here"
export RESEARCHER_SLACK_TOKEN="your_researcher_slack_token_here"
export RESEARCHER_SLACK_SIGNING_SECRET="your_researcher_slack_signing_secret_here"
export RESEARCHER_SLACK_USER_ID="researcher_bot_user_id_here"Run the example
Save the code above as peer_agents.py, then run:
python peer_agents.pyConnect Slack to the running server
Keep Python and ngrok running. In each app's Slack settings, prepend your public HTTPS origin to these paths:
| App | Event subscriptions | Interactivity |
|---|---|---|
| Coordinator app | /coordinator/events | /coordinator/interactions |
| Researcher app | /researcher/events | /researcher/interactions |
Complete URL verification, then send a DM or invite the app to a channel and @mention it. Ordinary channel replies require an @mention with the default configuration.
Full source: cookbook/05_agent_os/17_slack/peer_agents.py