Claude Code agents hallucinate non-existent blockers in multi-agent workflows
A user running three Claude Code agents for a side business found that agents repeatedly invented non-existent dependencies in Linear tickets over four days. The agents wrote they were waiting for scheduled jobs, sub-agents, or conversations that either had wrong names, had already completed, or were archived. Each agent later self-corrected after daily reviews caught the errors. The root cause:…
What you can do with it
AI at Work →Verify blocker names with one command before logging waits in Linear
What you get You stop agents from stalling on fake dependencies and catch made-up answers at write time.
Forces agents to run a check (e.g., launchctl list) and log output before marking a task.
- Who for
- founders, operations and support teams
- Cost
- paid from $20
- Effort
- minutes
- Already included in
- Claude Code subscription
Use it for
- Prevent fake scheduled-job blockers
- Catch completed sub-agent dependencies
- Avoid waiting on archived conversations
How to set it up · From the article
- Add verification rule to agent instructions
- Agent runs check command (launchctl list, ls, etc.) before logging blocker
- Agent pastes command output and timestamp in ticket
- Daily review flags any blocker without verification
Watch out Only catches name existence, not whether the job actually runs
Claude Code in the tool directory · 8 changes covered
Key points from the news
- 4 hallucinated blockers in 4 days across 3 Claude Code agents using Linear
- Agents invented names of scheduled jobs, sub-agents, and archived conversations
- New rule: verify blocker existence with one command before writing, log result and timestamp
With Claude Code's multi-agent setup, AI was stuck waiting for a 'non-existent task'—hallucinations aren't just in conversation
note.com · 24 October 2026
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