# Schema Apply

> Schema Apply is an Agent Skill for documents published in the majiayu000/claude-skill-registry repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Apply inferred conventions to incomplete notes. Triggers on "apply schema", "add missing fields", "complete notes", "fix frontmatter".

- Skill name: `schema-apply`
- Category: [Documents](https://www.openparable.com/skill/documents/1)
- Source: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/schema-apply/SKILL.md
- Repository: majiayu000/claude-skill-registry (498 GitHub stars when collected)

## SKILL.md

# Schema Application

Apply inferred conventions to incomplete notes. Suggests and adds missing fields based on what similar notes have.

## When to Use

Invoke when you want to:
- Add missing frontmatter fields to notes
- Batch-fix incomplete metadata
- Apply folder conventions to outliers
- Normalize notes to match their peers

## Arguments

| Argument | Required | Description |
|----------|----------|-------------|
| folder | No | Folder to apply schema to. Omit for entire vault. |
| path | No | Specific note to fix. Takes precedence over folder. |

## Process

### 1. Parse User Input

Recognize application requests:
- "apply inferred schema to incomplete notes"
- "add missing fields to meetings/"
- "fix incomplete notes in projects/"

### 2. Find Incomplete Notes

```
mcp__flywheel__find_incomplete_notes({
  folder: "meetings/",
  min_frequency: 0.7
})
```

### 3. Preview Changes

```
## Schema Application Preview

I'll add missing fields based on inferred conventions:

### meetings/2025-12-20 Client Call.md
Adding:
```yaml
attendees:
  - [[Sarah Chen]]
  - [[Marcus Johnson]]
tags:
  - meeting
  - client
```

### meetings/2025-12-22 Quick Sync.md
Adding:
```yaml
tags:
  - meeting
  - standup
```

**Proceed with these changes?** (y/n)
```

### 4. Apply Changes (with confirmation)

Use Read to get current content, Edit to add fields.

## Six Gates Compliance

| Gate | Implementation |
|------|----------------|
| 1. Read Before Write | Reads current file before any changes |
| 2. File Exists | Validates file exists via find_incomplete_notes |
| 3. Chain Validation | N/A (single step) |
| 4. Mutation Confirmation | Always shows preview, requires confirmation |
| 5. Health Check | Uses MCP health infrastructure |
| 6. Post Validation | Confirms changes after applying |

## Use Cases

- **Batch normalization**: "Make all meeting notes consistent"
- **New note completion**: "Add standard fields to my new note"
- **Migration support**: "Ensure all notes have required fields"

## Integration

Works well with other skills:
- **schema-infer**: See what fields will be applied
- **schema-gaps**: Find notes needing fixes
- **promote-frontmatter**: Extract prose patterns first

---

**Version:** 1.0.0

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Source: https://www.openparable.com/skill/documents/schema-apply (OpenParable). Cite the canonical URL above.