Paths: All file refs relative to skills repo root.

Agent Instructions Manager

Type: L3 Worker Category: 0XX Shared

Creates missing instruction files and audits all (CLAUDE.md, AGENTS.md, GEMINI.md) for quality, consistency, and best practices.

When to Use

• After editing any instruction file
• After adding/removing MCP servers or hooks
• Before release or publishing
• When sessions degrade (context bloat symptoms)
• First-time project setup (instruction files missing)

Phase 1: Discover Files

Locate instruction files in target project:

Report: which files exist (found / missing), which agents share files.

Phase 2: Create Missing Files

Skip condition: All files exist OR dry_run == true (report what would be created).

Step 2a: Detect Project Context

Step 2b: Create CLAUDE.md (if missing)

1. MANDATORY READ: Load skills/ln-111-root-docs-creator/references/templates/claude_md_template.md
2. Replace {{PROJECT_NAME}}, {{PROJECT_DESCRIPTION}}, {{DATE}}
3. Mark remaining {{...}} as [TBD: placeholder_name]
4. Write to target project root

Step 2c: Create AGENTS.md (if missing)

Source: target project's CLAUDE.md (just created or pre-existing).

Step 2d: Create GEMINI.md (if missing)

Source: target project's AGENTS.md (just created or pre-existing).

Step 2e: Report Creations

List each created file with its source (template / derived from CLAUDE.md / derived from AGENTS.md).

Phase 3: Token Budget Audit

For each instruction file:

Token estimation: wc -w {file} × 1.3 (English average tokens/word ratio).

Report table per file with line count, word count, estimated tokens.

Phase 4: Prompt Cache Safety

Check each file for content that breaks prefix-based prompt caching:

Phase 5: Content Quality

Phase 6: Cross-Agent Consistency

Compare content across all found instruction files:

Sync action: For each inconsistency, show diff and suggest which file is source of truth (usually CLAUDE.md).

Phase 7: Report

Agent Instructions Manager:

Created:  (omit section if nothing created)
- CLAUDE.md (from template, context from package.json)
- AGENTS.md (derived from CLAUDE.md)

Audit:
| File       | Lines | ~Tokens | Cache-safe | Quality | Issues |
|------------|-------|---------|------------|---------|--------|
| CLAUDE.md  | 80    | 2,100   | OK         | 6/7     | Missing Compact Instructions |
| AGENTS.md  | 77    | 2,000   | OK         | 7/7     | OK |
| GEMINI.md  | 75    | 1,950   | OK         | 7/7     | OK |

Cross-agent: OK (or N inconsistencies listed)

Recommendations:
1. Run /init (ln-100) for full context-aware CLAUDE.md with project-specific rules
2. Add ## Compact Instructions to CLAUDE.md

Definition of Done

• All instruction files discovered
• Missing files created (CLAUDE.md from template, AGENTS/GEMINI derived)
• Token budget within limits (≤2,500 tokens each)
• No prompt cache breakers found (or reported as WARN)
• Content quality checks passed (or issues reported)
• Cross-agent consistency verified
• Report generated with creation log and actionable recommendations

Version: 2.0.0 Last Updated: 2026-03-23