explore

name

explore

description

Read-only codebase exploration: discovery, structural reading, and emission of architecture/pattern/tooling/dependency summaries. Use to understand existing code, map files, trace function flow, locate symbols, or build pre-implementation context. Uses 1/3/5 Explore-agent escalation scaled to scope. Trigger on "explore", "find where X is", "how does X work in the code", "map the codebase", "what files handle Y", or any architecture/pattern/tooling/dependency context request on a local repo — even without naming /explore.

Explore Command

Read-only codebase orientation. Emit architecture, pattern, tooling, and dependency summaries for a repo-local task. Do NOT write, edit, or commit files.

When to Apply / NOT

Apply:

• Pre-implementation codebase orientation (feature, fix, refactor)
• File and symbol mapping — "where is X defined", "what uses Y"
• Architectural surveys — module boundaries, control flow, coupling
• Dependency tracing — import graphs, transitive deps, config files

NOT apply:

• External library docs, SDK APIs, or framework behavior — use a doc-retrieval workflow instead
• User wants a packed repo file as a deliverable artifact
• Implementation, editing, or committing anything

Process

1. Scope — parse the task. Identify files/dirs/concerns. State scope explicitly before dispatching.
2. Dispatch decision — for multi-file or uncertain tasks: dispatch Explore agent(s) instead of reading directly. Escalation: 1 agent for single-concern known scope; 3 agents for multiple concerns or unknown scope; 5 agents for cross-module or architectural survey. Auto-skip (direct reads allowed) only for single file under 50 LOC.
3. Discovery — token-efficient flags mandatory:
   • File discovery: fd -e <ext> --max-results 50
   • Symbol search: ast-grep run -p 'PATTERN' -l <lang> -C 1 or git --no-pager grep -n -C 2 'pattern'
   • Content preview: bat -P -p -n -r START:END file or Read -offset -limit
   • Directory structure: eza --tree --level=2
4. Synthesis — emit all Required Output sections. No file writes.
5. Heavy-codebase escape hatch — scope > 50 files: use a codebase-packing tool if available as an internal analysis aid (not handed to the user as output); search the packed output for targeted extraction.

Required Output

Emit all 8 sections. Omit a section only when genuinely not applicable; state why.

Task Understanding

Brief restatement of the task and identified scope boundaries.

Architecture Context

[Module/Layer Name]
- path/to/file.ts:L10-50 — [Purpose] — [Relevance]
- path/to/interface.ts — [Purpose] — [Relevance]

Pattern Context

[Pattern Category]
- path/to/reference.ts — [Pattern description] — [How to apply]

Tooling Context

- Build: [command] — [when to run]
- Test: [command] — [scope/coverage]
- Lint: [command] — [config location]

Dependency Map

Internal:
- module-a -> module-b (reason)

External:
- library-name@version — [usage context]

Critical Files Summary

Prioritized list of files most relevant to the task:

Priority	File	Purpose	Action Hint
P0	path/to/core.ts	Core logic	Modify
P1	path/to/types.ts	Type definitions	Extend
P2	path/to/utils.ts	Helpers	Reference

Constraints & Considerations

• [Constraint 1]: [Impact on implementation]
• [Constraint 2]: [Impact on implementation]

Recommended Next Steps

1. [First action with specific file reference]
2. [Second action with specific file reference]

Tool Restrictions

Allowed (read-only): eza, fd, ast-grep (find-only), git grep, rg, bat, tokei, Read, codebase_search, and any available codebase-analysis or codebase-packing MCP tooling

Banned: Edit, Write, mcp__edit__edit_file, git commit, any state-mutating bash command

Anti-Patterns

• Reading whole files when line ranges suffice — use bat -r or Read -offset -limit
• Grepping/globbing before dispatching Explore agents on multi-file tasks — dispatch first
• Bypassing token-efficient flags — bat -P -p -n, rg -l, fd --max-results 50
• Re-entering a router or orchestrator skill from within this leaf skill — forbidden (recursion guard)