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feat(slack): add allow_bots config for bot-to-bot communication

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Three modes: "none" (default, backward-compatible), "mentions" (accept
bot messages only when they @mention us), "all" (accept all bot messages
except our own, to prevent echo loops).

Configurable via:
  slack:
    allow_bots: mentions
Or env var: SLACK_ALLOW_BOTS=mentions

Self-message guard always active regardless of mode.

Based on PR #3200 by Mibayy, adapted to current main with config.yaml
bridging support.
This commit is contained in:
Mibayy 2026-04-09 13:35:13 -07:00 • committed by Teknium
parent 7f7b02b764
commit 1773e3d647
2 changed files with 21 additions and 2 deletions
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2
gateway/config.py
View file

@ -553,6 +553,8 @@ def load_gateway_config() -> GatewayConfig:
if isinstance(slack_cfg, dict):
if "require_mention" in slack_cfg and not os.getenv("SLACK_REQUIRE_MENTION"):
os.environ["SLACK_REQUIRE_MENTION"] = str(slack_cfg["require_mention"]).lower()
if "allow_bots" in slack_cfg and not os.getenv("SLACK_ALLOW_BOTS"):
os.environ["SLACK_ALLOW_BOTS"] = str(slack_cfg["allow_bots"]).lower()
frc = slack_cfg.get("free_response_channels")
if frc is not None and not os.getenv("SLACK_FREE_RESPONSE_CHANNELS"):
if isinstance(frc, list):

21
gateway/platforms/slack.py
View file

@ -941,9 +941,26 @@ class SlackAdapter(BasePlatformAdapter):
if v > cutoff
}
# Ignore bot messages (including our own)
# Bot message filtering (SLACK_ALLOW_BOTS / config allow_bots):
# "none" — ignore all bot messages (default, backward-compatible)
# "mentions" — accept bot messages only when they @mention us
# "all" — accept all bot messages (except our own)
if event.get("bot_id") or event.get("subtype") == "bot_message":
return
allow_bots = self.config.extra.get("allow_bots", "")
if not allow_bots:
allow_bots = os.getenv("SLACK_ALLOW_BOTS", "none")
allow_bots = str(allow_bots).lower().strip()
if allow_bots == "none":
return
elif allow_bots == "mentions":
text_check = event.get("text", "")
if self._bot_user_id and f"<@{self._bot_user_id}>" not in text_check:
return
# "all" falls through to process the message
# Always ignore our own messages to prevent echo loops
msg_user = event.get("user", "")
if msg_user and self._bot_user_id and msg_user == self._bot_user_id:
return
# Ignore message edits and deletions
subtype = event.get("subtype")