// Generate hierarchical AGENTS.md knowledge base for a codebase. Creates root + complexity-scored subdirectory documentation.
| name | index-knowledge |
| description | Generate hierarchical AGENTS.md knowledge base for a codebase. Creates root + complexity-scored subdirectory documentation. |
Generate hierarchical AGENTS.md files. Root + complexity-scored subdirectories.
--create-new # Read existing → remove all → regenerate from scratch
--max-depth=2 # Limit directory depth (default: 5)
Default: Update mode (modify existing + create new where warranted)
TodoWrite([
{ id: "discovery", content: "Fire explore agents + LSP codemap + read existing", status: "pending", priority: "high" },
{ id: "scoring", content: "Score directories, determine locations", status: "pending", priority: "high" },
{ id: "generate", content: "Generate AGENTS.md files (root + subdirs)", status: "pending", priority: "high" },
{ id: "review", content: "Deduplicate, validate, trim", status: "pending", priority: "medium" }
])
Mark "discovery" as in_progress.
Multiple Task calls in a single message execute in parallel. Results return directly.
// All Task calls in ONE message = parallel execution
Task(
description="project structure",
subagent_type="explore",
prompt="Project structure: PREDICT standard patterns for detected language → REPORT deviations only"
)
Task(
description="entry points",
subagent_type="explore",
prompt="Entry points: FIND main files → REPORT non-standard organization"
)
Task(
description="conventions",
subagent_type="explore",
prompt="Conventions: FIND config files (.eslintrc, pyproject.toml, .editorconfig) → REPORT project-specific rules"
)
Task(
description="anti-patterns",
subagent_type="explore",
prompt="Anti-patterns: FIND 'DO NOT', 'NEVER', 'ALWAYS', 'DEPRECATED' comments → LIST forbidden patterns"
)
Task(
description="build/ci",
subagent_type="explore",
prompt="Build/CI: FIND .github/workflows, Makefile → REPORT non-standard patterns"
)
Task(
description="test patterns",
subagent_type="explore",
prompt="Test patterns: FIND test configs, test structure → REPORT unique conventions"
)
| Factor | Threshold | Additional Agents |
|---|---|---|
| Total files | >100 | +1 per 100 files |
| Total lines | >10k | +1 per 10k lines |
| Directory depth | ≥4 | +2 for deep exploration |
| Large files (>500 lines) | >10 files | +1 for complexity hotspots |
| Monorepo | detected | +1 per package/workspace |
| Multiple languages | >1 | +1 per language |
# Measure project scale first
total_files=$(find . -type f -not -path '*/node_modules/*' -not -path '*/.git/*' | wc -l)
total_lines=$(find . -type f \( -name "*.ts" -o -name "*.py" -o -name "*.go" \) -not -path '*/node_modules/*' -exec wc -l {} + 2>/dev/null | tail -1 | awk '{print $1}')
large_files=$(find . -type f \( -name "*.ts" -o -name "*.py" \) -not -path '*/node_modules/*' -exec wc -l {} + 2>/dev/null | awk '$1 > 500 {count++} END {print count+0}')
max_depth=$(find . -type d -not -path '*/node_modules/*' -not -path '*/.git/*' | awk -F/ '{print NF}' | sort -rn | head -1)
Example spawning (all in ONE message for parallel execution):
// 500 files, 50k lines, depth 6, 15 large files → spawn additional agents
Task(
description="large files",
subagent_type="explore",
prompt="Large file analysis: FIND files >500 lines, REPORT complexity hotspots"
)
Task(
description="deep modules",
subagent_type="explore",
prompt="Deep modules at depth 4+: FIND hidden patterns, internal conventions"
)
Task(
description="cross-cutting",
subagent_type="explore",
prompt="Cross-cutting concerns: FIND shared utilities across directories"
)
// ... more based on calculation
While Task agents execute, main session does:
# Directory depth + file counts
find . -type d -not -path '*/\.*' -not -path '*/node_modules/*' -not -path '*/venv/*' -not -path '*/dist/*' -not -path '*/build/*' | awk -F/ '{print NF-1}' | sort -n | uniq -c
# Files per directory (top 30)
find . -type f -not -path '*/\.*' -not -path '*/node_modules/*' | sed 's|/[^/]*$||' | sort | uniq -c | sort -rn | head -30
# Code concentration by extension
find . -type f \( -name "*.py" -o -name "*.ts" -o -name "*.tsx" -o -name "*.js" -o -name "*.go" -o -name "*.rs" \) -not -path '*/node_modules/*' | sed 's|/[^/]*$||' | sort | uniq -c | sort -rn | head -20
# Existing AGENTS.md / CLAUDE.md
find . -type f \( -name "AGENTS.md" -o -name "CLAUDE.md" \) -not -path '*/node_modules/*' 2>/dev/null
For each existing file found:
Read(filePath=file)
Extract: key insights, conventions, anti-patterns
Store in EXISTING_AGENTS map
If --create-new: Read all existing first (preserve context) → then delete all → regenerate.
lsp_servers() # Check availability
# Entry points (parallel)
lsp_document_symbols(filePath="src/index.ts")
lsp_document_symbols(filePath="main.py")
# Key symbols (parallel)
lsp_workspace_symbols(filePath=".", query="class")
lsp_workspace_symbols(filePath=".", query="interface")
lsp_workspace_symbols(filePath=".", query="function")
# Centrality for top exports
lsp_find_references(filePath="...", line=X, character=Y)
LSP Fallback: If unavailable, rely on explore agents + AST-grep.
Merge: bash + LSP + existing + Task agent results. Mark "discovery" as completed.
Mark "scoring" as in_progress.
| Factor | Weight | High Threshold | Source |
|---|---|---|---|
| File count | 3x | >20 | bash |
| Subdir count | 2x | >5 | bash |
| Code ratio | 2x | >70% | bash |
| Unique patterns | 1x | Has own config | explore |
| Module boundary | 2x | Has index.ts/init.py | bash |
| Symbol density | 2x | >30 symbols | LSP |
| Export count | 2x | >10 exports | LSP |
| Reference centrality | 3x | >20 refs | LSP |
| Score | Action |
|---|---|
| Root (.) | ALWAYS create |
| >15 | Create AGENTS.md |
| 8-15 | Create if distinct domain |
| <8 | Skip (parent covers) |
AGENTS_LOCATIONS = [
{ path: ".", type: "root" },
{ path: "src/hooks", score: 18, reason: "high complexity" },
{ path: "src/api", score: 12, reason: "distinct domain" }
]
Mark "scoring" as completed.
Mark "generate" as in_progress.
# PROJECT KNOWLEDGE BASE
**Generated:** {TIMESTAMP}
**Commit:** {SHORT_SHA}
**Branch:** {BRANCH}
## OVERVIEW
{1-2 sentences: what + core stack}
## STRUCTURE
\`\`\`
{root}/
├── {dir}/ # {non-obvious purpose only}
└── {entry}
\`\`\`
## WHERE TO LOOK
| Task | Location | Notes |
| ---- | -------- | ----- |
## CODE MAP
{From LSP - skip if unavailable or project <10 files}
| Symbol | Type | Location | Refs | Role |
## CONVENTIONS
{ONLY deviations from standard}
## ANTI-PATTERNS (THIS PROJECT)
{Explicitly forbidden here}
## UNIQUE STYLES
{Project-specific}
## COMMANDS
\`\`\`bash
{dev/test/build}
\`\`\`
## NOTES
{Gotchas}
Quality gates: 50-150 lines, no generic advice, no obvious info.
Launch general agents for each location in ONE message (parallel execution):
// All in single message = parallel
Task(
description="AGENTS.md for src/hooks",
subagent_type="general",
prompt="Generate AGENTS.md for: src/hooks
- Reason: high complexity
- 30-80 lines max
- NEVER repeat parent content
- Sections: OVERVIEW (1 line), STRUCTURE (if >5 subdirs), WHERE TO LOOK, CONVENTIONS (if different), ANTI-PATTERNS
- Write directly to src/hooks/AGENTS.md"
)
Task(
description="AGENTS.md for src/api",
subagent_type="general",
prompt="Generate AGENTS.md for: src/api
- Reason: distinct domain
- 30-80 lines max
- NEVER repeat parent content
- Sections: OVERVIEW (1 line), STRUCTURE (if >5 subdirs), WHERE TO LOOK, CONVENTIONS (if different), ANTI-PATTERNS
- Write directly to src/api/AGENTS.md"
)
// ... one Task per AGENTS_LOCATIONS entry
Results return directly. Mark "generate" as completed.
Mark "review" as in_progress.
For each generated file:
Mark "review" as completed.
=== index-knowledge Complete ===
Mode: {update | create-new}
Files:
✓ ./AGENTS.md (root, {N} lines)
✓ ./src/hooks/AGENTS.md ({N} lines)
Dirs Analyzed: {N}
AGENTS.md Created: {N}
AGENTS.md Updated: {N}
Hierarchy:
./AGENTS.md
└── src/hooks/AGENTS.md