fix(gateway): add platform notes to prevent hallucinated capabilities#1184
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Tell the agent what it CANNOT do on Slack and Discord — no searching channel history, no pinning messages, no managing channels/roles. Prevents the agent from hallucinating capabilities it doesn't have and promising actions it can't deliver. Addresses user feedback: agent says 'I'll search your Slack history' then goes silent because no Slack-specific tools exist.
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angelburgosrosado
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Apr 27, 2026
…ousResearch#1184) Tell the agent what it CANNOT do on Slack and Discord — no searching channel history, no pinning messages, no managing channels/roles. Prevents the agent from hallucinating capabilities it doesn't have and promising actions it can't deliver. Addresses user feedback: agent says 'I'll search your Slack history' then goes silent because no Slack-specific tools exist.
02356abc
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May 14, 2026
…ousResearch#1184) Tell the agent what it CANNOT do on Slack and Discord — no searching channel history, no pinning messages, no managing channels/roles. Prevents the agent from hallucinating capabilities it doesn't have and promising actions it can't deliver. Addresses user feedback: agent says 'I'll search your Slack history' then goes silent because no Slack-specific tools exist.
olympus-terminal
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May 16, 2026
…ousResearch#1184) Tell the agent what it CANNOT do on Slack and Discord — no searching channel history, no pinning messages, no managing channels/roles. Prevents the agent from hallucinating capabilities it doesn't have and promising actions it can't deliver. Addresses user feedback: agent says 'I'll search your Slack history' then goes silent because no Slack-specific tools exist.
Egavasyug
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Jun 10, 2026
…ousResearch#1184) Tell the agent what it CANNOT do on Slack and Discord — no searching channel history, no pinning messages, no managing channels/roles. Prevents the agent from hallucinating capabilities it doesn't have and promising actions it can't deliver. Addresses user feedback: agent says 'I'll search your Slack history' then goes silent because no Slack-specific tools exist.
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Summary
Adds platform-specific behavioral notes to the session context prompt for Slack and Discord. This tells the agent what it cannot do on each platform, preventing it from hallucinating capabilities and promising actions it can't deliver.
The problem
A user reported that the agent says things like "I'll search your Slack history" or "I'll pin that message" — then goes silent because no Slack-specific tools exist. The agent pattern-matches on the request and generates a plausible-sounding response, but has no way to follow through.
The fix
When the agent runs on Slack or Discord, the session context prompt now includes:
This is lightweight (a few lines in the system prompt) and prevents the hallucination without adding any tools to the context budget.
Files changed
gateway/session.py— Platform-specific notes inbuild_session_context_prompt()tests/gateway/test_session.py— Tests for Slack and Discord platform notesTest plan
683 gateway tests pass, 0 regressions.