Human Checkpoint

Mission

Request human decisions only at meaningful risk or decision points, using executable options.

Interaction Channel Policy

For checkpoints that require user input, choose interaction channel in this order:

1. In moderate or detailed, prefer built-in user-question tool (request_user_input) for all required user interactions.
2. If the built-in tool is unavailable in the current runtime, degrade to concise plain-text questions in chat.
3. In full-auto, avoid non-essential questions and trigger checkpoints only by mode policy.
4. Never silently skip a required checkpoint because the preferred channel is unavailable.

Mode-Aware Trigger Policy

1. full-auto
   • Trigger only for hard blockers or major safety risks.
2. moderate
   • Trigger for plan-finalization confirmations.
   • Trigger before high-resource actions.
   • Trigger for major safety risks.
   • Trigger for required intake clarification and parameter confirmations.
   • Trigger for replan confirmations when route changes materially.
3. detailed
   • Trigger when path is unclear.
   • Trigger before high-resource actions.
   • Trigger for major safety risks.
   • Trigger for required intake clarification and parameter confirmations.
   • Trigger for replan confirmations when route changes materially.

Always trigger for shared-memory publication.

Major Safety Risk Examples

Treat these as major risks:

1. potential large-scale file deletion
2. likely secret leakage
3. destructive remote/shared resource mutation
4. actions with clear financial or operational damage potential

In all modes, checkpoint is required for major risks.

Request Format

Use this structure:

1. Decision Needed
2. Context
3. Options
4. Recommendation
5. If Approved
6. If Rejected

When using request_user_input, map the same structure into 1-3 short option-based questions. When using plain-text fallback, ask one concise direct question at a time.

Required Option Set for Risky Actions

Provide these options unless user already gave explicit policy:

1. allow once
2. allow same action type for this run
3. disallow and stop
4. user-defined handling

If option 2 is chosen, record it in run policy for this run only.

Option Design Rules

1. Keep options executable now.
2. State tradeoffs in cost, risk, and learning value.
3. Put recommended option first when appropriate.
4. Keep request short and clear.

After Decision

1. Execute only approved behavior.
2. Record rationale and outcome in memory/logs.
3. Re-check if another checkpoint is needed before next high-impact action.
4. Record interaction_channel=request_user_input|plain-text-fallback.
5. If fallback is used, record fallback_reason.

Failure Handling

If no human response is available:

1. In full-auto, continue with safest reversible path unless major safety risk remains unresolved.
2. In moderate or detailed, use plain-text fallback if built-in question tool is unavailable.
3. In moderate or detailed, remain blocked until user response for required checkpoints.