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Iterative Retrieval Skill

This skill enables orchestrators to iteratively refine sub-agent queries through follow-up questions, ensuring sub-agents gather sufficient context before the orchestrator accepts their output. This addresses the problem where orchestrators have semantic context that sub-agents lack, leading to incomplete summaries.

Target Audience

This skill is designed for the/code orchestrator only (code.md slash command). Sub-agents do not use this skill - they simply respond to queries. The orchestrator is responsible for evaluating responses and deciding whether to resume with follow-ups.

Note: Sub-agents do NOT see this skill documentation in their context. Only the orchestrator can invoke and follow the protocol. Sub-agents are unaware they're part of an iterative retrieval loop - they just respond to queries and follow-ups as normal requests.

Usage Model

This skill is optional and opt-in. Not every sub-agent call benefits from iterative refinement - simple lookups or well-defined queries don't need it. Invoke this skill when you anticipate that a sub-agent may return incomplete context due to semantic gaps.

The 4-Phase Protocol

This protocol provides a structured approach to iterative context gathering. All 4 phases represent the recommended workflow , but phases 2-4 are optional if the initial response is sufficient. Exercise judgment - if Phase 2 evaluation shows context is sufficient on first pass, phases 3-4 aren't needed.

Phase 1: Initial Dispatch

Define and dispatch the initial query with full context:

1. Define PRIMARY OBJECTIVE : Clearly state what you ultimately need to accomplish
2. Formulate INITIAL QUERIES : Specific questions or search criteria for the sub-agent
3. Dispatch with BOTH : Send both the queries AND the primary objective to provide semantic context
4. Store AGENT ID : Keep the agent ID returned from the Task() call for potential resumption

Phase 2: Sufficiency Evaluation

Evaluate whether the sub-agent's response provides sufficient context using the checklist below. If context is sufficient, skip to output (phases 3-4 not needed). If gaps exist, proceed to Phase 3.

Sufficiency Evaluation Checklist

Ask yourself these 4 questions:

1. Direct Answer : Does the summary directly answer the orchestrator's primary objective?
2. Obvious Gaps : Are there obvious gaps the orchestrator could identify? (e.g., missing error handling, incomplete data flow, unaddressed edge cases)
3. Adjacent Information : Did the sub-agent mention adjacent or related information that wasn't fully explored?
4. Confidence Check : Would the orchestrator be confident proceeding with ONLY this information?

If you answer "no" to question 1 or 4, OR "yes" to questions 2 or 3, the context is likely insufficient - proceed to Phase 3.

Phase 3: Refinement Request

Resume the sub-agent with targeted follow-up questions:

1. Resume with AGENT ID : Use the stored agent ID to continue the conversation
2. Acknowledge what was useful : Briefly confirm what information was valuable
3. Specify EXACTLY what's needed : Be precise about what additional context is required
4. Ask about related info : "Is there related information that might be relevant to [primary objective]?"

Phase 4: Loop

Repeat Phases 2-3 until one of these conditions is met:

• Context is sufficient : All 4 checklist criteria are satisfied
• Maximum cycles reached : Recommended maximum of 3 refinement cycles (see guidance below)
• Source exhausted : Sub-agent confirms no additional relevant information exists

Refinement Cycle Guidance

The recommended maximum is 3 refinement cycles (initial dispatch + 2 follow-ups). This balances thoroughness against cost and latency.

Important : This is a recommendation, not an enforced limit. As guidance documentation, this skill cannot enforce limits - the orchestrator has final judgment. However, exceeding 3 cycles often indicates:

• The query scope is too broad
• The sub-agent lacks access to needed information
• The primary objective should be broken into smaller queries

Output Format

When iterative retrieval completes, report:

1. Total refinement cycles used : Number of iterations (including initial dispatch)
2. What additional context was gathered : Summarize what the follow-ups uncovered
3. Agent ID for future resumption : Store for potential later follow-ups

Example:

Iterative Retrieval Summary:
- Cycles used: 2 (initial + 1 follow-up)
- Additional context gathered: Error handling patterns, retry logic implementation, timeout configuration
- Agent ID: agent-abc123 (available for resumption)

When to Use This Skill

Use iterative retrieval when:

• The orchestrator has semantic context the sub-agent lacks
• The query involves complex or interconnected information
• Initial results might miss important adjacent context
• The orchestrator can identify potential gaps in advance

Don't use iterative retrieval when:

• The query is simple and well-defined (e.g., "read file X")
• The sub-agent has all needed context upfront
• Time/cost constraints are critical
• The information needed is atomic and isolated

Examples

For detailed usage examples, see references/examples.md (if available).

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