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Research Skill

Quick Ref: Deep codebase exploration with multi-angle analysis. Output: .agents/research/*.md

YOU MUST EXECUTE THIS WORKFLOW. Do not just describe it.

CLI dependencies: ao (knowledge injection — optional). If ao is unavailable, skip prior knowledge search and proceed with direct codebase exploration.

Flags

Execution Steps

Given /research <topic> [--auto]:

Step 1: Create Output Directory

mkdir -p .agents/research

Step 2: Check Prior Art

First, search and inject existing knowledge (if ao available):

# Pull relevant prior knowledge for this topic
ao lookup --query "<topic>" --limit 5 2>/dev/null || \
  ao search "<topic>" 2>/dev/null || \
  echo "ao not available, skipping knowledge search"

Review ao search results: If ao returns relevant learnings or patterns, incorporate them into your research strategy. Look for:

• Prior research on this topic or related topics
• Known patterns or anti-patterns
• Lessons learned from similar investigations

Search ALL local knowledge locations by content (not just filename):

Use Grep to search every knowledge directory for the topic. This catches learnings from /retro, brainstorms, and plans — not just research artifacts.

# Search all knowledge locations by content
for dir in research learnings knowledge patterns retros plans brainstorm; do
  grep -r -l -i "<topic>" .agents/${dir}/ 2>/dev/null
done

# Search global patterns (cross-repo knowledge)
grep -r -l -i "<topic>" ~/.claude/patterns/ 2>/dev/null

If matches are found, read the relevant files with the Read tool before proceeding to exploration. Prior knowledge prevents redundant investigation.

Step 2.5: Pre-Flight — Detect Spawn Backend

Before launching the explore agent, detect which backend is available:

1. Check if spawn_agent is available → log "Backend: codex-sub-agents"
2. Else check if TeamCreate is available → log "Backend: claude-native-teams"
3. Else check if skill tool is read-only (OpenCode) → log "Backend: opencode-subagents"
4. Else check if Task is available → log "Backend: background-task-fallback"
5. Else → log "Backend: inline (no spawn available)"

Record the selected backend — it will be included in the research output document for traceability.

Read the matching backend reference for concrete tool call examples:

• Claude feature contract → ../shared/references/claude-code-latest-features.md
• Codex → ../shared/references/backend-codex-subagents.md
• Claude Native Teams → ../shared/references/backend-claude-teams.md
• Background Tasks → ../shared/references/backend-background-tasks.md
• Inline → ../shared/references/backend-inline.md

Step 3: Launch Explore Agent

YOU MUST DISPATCH AN EXPLORATION AGENT NOW. Select the backend using capability detection:

Backend Selection (MANDATORY)

1. If spawn_agent is available → Codex sub-agent
2. Else if TeamCreate is available → Claude native team (Explore agent)
3. Else if skill tool is read-only (OpenCode) → OpenCode subagent — task(subagent_type="explore", description="Research: <topic>", prompt="<explore prompt>")
4. Else → Background task fallback

Exploration Prompt (all backends)

Use this prompt for whichever backend is selected:

Thoroughly investigate: <topic>

Discovery tiers (execute in order, skip if source unavailable):

Tier 1 — Code-Map (fastest, authoritative):
  Read docs/code-map/README.md → find <topic> category
  Read docs/code-map/{feature}.md → get exact paths and function names
  Skip if: no docs/code-map/ directory

Tier 2 — Semantic Search (conceptual matches):
  mcp__smart-connections-work__lookup query="<topic>" limit=10
  Skip if: MCP not connected

Tier 2.5 — Git History (recent changes and decision context):
  git log --oneline -30 -- <topic-related-paths>   # scoped to relevant paths, cap 30 lines
  git log --all --oneline --grep="<topic>" -10      # cap 10 matches
  git blame <key-file> | grep -i "<topic>" | head -20  # cap 20 lines
  Skip if: not a git repo, no relevant history, or <topic> too broad (>100 matches)
  NEVER: git log on full repo without -- path filter (same principle as Tier 3 scoping)
  NOTE: This is git commit history, not session history. For session/handoff history, use /trace.

Tier 3 — Scoped Search (keyword precision):
  Grep("<topic>", path="<specific-dir>/")   # ALWAYS scope to a directory
  Glob("<specific-dir>/**/*.py")            # ALWAYS scope to a directory
  NEVER: Grep("<topic>") or Glob("**/*.py") on full repo — causes context overload

Tier 4 — Source Code (verify from signposts):
  Read files identified by Tiers 1-3 (including git history leads from Tier 2.5)
  Use function/class names, not line numbers

Tier 5 — Prior Knowledge (may be stale):
  Search ALL .agents/ knowledge dirs by content:
    for dir in research learnings knowledge patterns retros plans brainstorm; do
      grep -r -l -i "<topic>" .agents/${dir}/ 2>/dev/null
    done
  Read matched files. Cross-check findings against current source.

Tier 6 — External Docs (last resort):
  WebSearch for external APIs or standards
  Only when Tiers 1-5 are insufficient

Return a detailed report with:
- Key files found (with paths)
- How the system works
- Important patterns or conventions
- Any issues or concerns

Cite specific file:line references for all claims.

Spawn Research Agents

If your runtime supports spawning parallel subagents, spawn one or more research agents with the exploration prompt. Each agent explores independently and writes findings to .agents/research/.

If no multi-agent capability is available, perform the exploration inline in the current session using file reading, grep, and glob tools directly.

Step 4: Validate Research Quality (Optional)

For thorough research, perform quality validation:

4a. Coverage Validation

Check: Did we look everywhere we should? Any unexplored areas?

• List directories/files explored
• Identify gaps in coverage
• Note areas that need deeper investigation

4b. Depth Validation

Check: Do we UNDERSTAND the critical parts? HOW and WHY, not just WHAT?

• Rate depth (0-4) for each critical area
• Flag areas with shallow understanding
• Identify what needs more investigation

4c. Gap Identification

Check: What DON'T we know that we SHOULD know?

• List critical gaps
• Prioritize what must be filled before proceeding
• Note what can be deferred

4d. Assumption Challenge

Check: What assumptions are we building on? Are they verified?

• List assumptions made
• Flag high-risk unverified assumptions
• Note what needs verification

Step 5: Synthesize Findings

After the Explore agent and validation swarm return, write findings to: .agents/research/YYYY-MM-DD-<topic-slug>.md

Use this format:

---
id: research-YYYY-MM-DD-<topic-slug>
type: research
date: YYYY-MM-DD
---

# Research: <Topic>

**Backend:** <codex-sub-agents | claude-native-teams | background-task-fallback | inline>
**Scope:** <what was investigated>

## Summary
<2-3 sentence overview>

## Key Files
| File | Purpose |
|------|---------|
| path/to/file.py | Description |

## Findings
<detailed findings with file:line citations>

## Recommendations
<next steps or actions>

Step 6: Request Human Approval (Gate 1)

Skip this step if--auto flag is set. In auto mode, proceed directly to Step 7.

USE AskUserQuestion tool:

Tool: AskUserQuestion
Parameters:
  questions:
    - question: "Research complete. Approve to proceed to planning?"
      header: "Gate 1"
      options:
        - label: "Approve"
          description: "Research is sufficient, proceed to /plan"
        - label: "Revise"
          description: "Need deeper research on specific areas"
        - label: "Abandon"
          description: "Stop this line of investigation"
      multiSelect: false

Wait for approval before reporting completion.

Step 7: Report to User

Tell the user:

1. What you found
2. Where the research doc is saved
3. Gate 1 approval status
4. Next step: /plan to create implementation plan

Key Rules

• Actually dispatch the Explore agent - don't just describe doing it
• Scope searches - use the topic to narrow file patterns
• Cite evidence - every claim needs file:line
• Write output - research must produce a .agents/research/ artifact

Thoroughness Levels

Include in your Explore agent prompt:

• "quick" - for simple questions
• "medium" - for feature exploration
• "very thorough" - for architecture/cross-cutting concerns

Examples

Investigate Authentication System

User says: /research "authentication system"

What happens:

1. Agent searches knowledge base for prior auth research
2. Explore agent investigates via Code-Map, Grep, and file reading
3. Findings synthesized with file:line citations
4. Output written to .agents/research/2026-02-13-authentication-system.md

Result: Detailed report identifying auth middleware location, session handling, and token validation patterns.

Quick Exploration of Cache Layer

User says: /research "cache implementation"

What happens:

1. Agent uses Glob to find cache-related files
2. Explore agent reads key files and summarizes current state
3. No prior research found, proceeds with fresh exploration
4. Output written to .agents/research/2026-02-13-cache-implementation.md

Result: Summary of cache strategy, TTL settings, and eviction policies with file references.

Deep Dive into Payment Flow

User says: /research "payment processing flow"

What happens:

1. Agent loads prior payment research from knowledge base
2. Explore agent traces flow through multiple services
3. Identifies integration points and error handling
4. Output written with cross-service file citations

Result: End-to-end payment flow diagram with file paths and critical decision points.

Troubleshooting

Reference Documents

• ../shared/references/backend-background-tasks.md
• ../shared/references/backend-claude-teams.md
• ../shared/references/backend-codex-subagents.md
• ../shared/references/backend-inline.md
• ../shared/references/claude-code-latest-features.md
• references/context-discovery.md
• references/document-template.md
• references/failure-patterns.md
• ../shared/references/ralph-loop-contract.md
• references/vibe-methodology.md

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Feb 2, 2026

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