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Use when completing development phases or branches to identify and update AGENTS.md files that may have become stale - analyzes what changed, determines affected contracts and documentation, and coordinates updates
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Basado en la clasificación ocupacional SOC
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| name | maintaining-project-context |
| description | Use when completing development phases or branches to identify and update AGENTS.md files that may have become stale - analyzes what changed, determines affected contracts and documentation, and coordinates updates |
REQUIRED SUB-SKILL: Use the writing-agents-md-files skill for all context file creation and updates.
Context files (AGENTS.md) document contracts and architectural intent. When code changes contracts, the documentation must update. Stale documentation is worse than no documentation.
We use OUR format structure (Purpose, Contracts, Dependencies, Invariants, etc.) — AGENTS.md is the cross-platform AI agent context filename.
Trigger: End of development phase, branch completion, or any work that changed contracts, APIs, or domain structure.
| Change Type | Update Required? | What to Update |
|---|---|---|
| New domain/module | Yes | Create domain context file |
| API/interface change | Yes | Contracts section |
| Architectural decision | Yes | Key Decisions section |
| Invariant change | Yes | Invariants section |
| Dependency change | Yes | Dependencies section |
| Bug fix (no contract change) | No | - |
| Refactor (same behavior) | No | - |
| Test additions | No | - |
Diff against the base (branch start or phase start):
# Get changed files
git diff --name-only <base-sha> HEAD
# Get detailed changes
git diff <base-sha> HEAD --stat
Categorize changes:
For each significant change, determine which context file should document it:
| Change Location | Context File Location |
|---|---|
| Project-wide pattern | Root AGENTS.md |
| New domain | <domain>/AGENTS.md (create) |
| Existing domain contract | <domain>/AGENTS.md (update) |
| Cross-domain dependency | Both affected domains |
Hierarchy rule: Information belongs at the lowest level where it applies. Domain-specific contracts go in domain files, not root.
For each affected context file, verify:
# Find domain's public exports
grep -r "export" <domain>/index.ts
# Find domain's imports (dependencies)
grep -r "from '\.\." <domain>/
For updates:
date +%Y-%m-%dFor new domains:
<domain>/AGENTS.md using the template from writing-agents-md-filesgit add <affected AGENTS.md files>
git commit -m "docs: update project context for <branch-name>"
Has code changed?
├─ No → Skip (nothing to update)
└─ Yes → What changed?
├─ Only tests/internal details → Skip
└─ Contracts/APIs/structure → Continue
│
├─ New domain created?
│ └─ Create <domain>/AGENTS.md
│
├─ Existing domain changed?
│ └─ Update domain AGENTS.md (read first!)
│
└─ Project-wide pattern changed?
└─ Update root AGENTS.md
Always update when:
Never update for:
| Mistake | Fix |
|---|---|
| Updating for every change | Only update for contract changes |
| Forgetting freshness date | Always use date +%Y-%m-%d |
| Documenting implementation | Document contracts and intent |
| Putting domain info in root | Use domain context files for domain contracts |
| Skipping verification | Read the code, confirm contracts hold |
| Writing AGENTS.md without reading | Always read existing content before updating |
Called by:
Uses: