Agent skill

frontmatter-parsing

YAML frontmatter parsing and manipulation for .planning/ documents. Provides read, write, update, query, and validation operations on frontmatter blocks in GSD markdown artifacts.

a5c-aigithub.com/a5c-aiGitHub ↗
claude-codecodexcan modify filesMIT
Install
npx skills add a5c-ai/babysitter --skill frontmatter-parsing --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 2
SKILL.md size: 7 KB
Bundled scripts: none
Version: 1.0.0
Declared author: babysitter-sdk
Allowed tools: ReadWriteEditGlobGrep
Path: library/methodologies/gsd/skills/frontmatter-parsing/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 1,642
Language: JavaScript

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

status: in-progress phase: 72 wave: 1 depends_on: [] files_modified: ["src/auth/oauth.ts", "src/auth/tokens.ts"] created: 2026-03-02 updated: 2026-03-02 --- # Plan content below... ``` ## Capabilities ### 1. Parse Frontmatter Extract frontmatter from a markdown file into structured data: ```yaml # Input file: .planning/phase-72/PLAN-1.md --- status: planned phase: 72 plan_number: 1 wave: 1 depends_on: [] files_modified: - src/auth/oauth.ts - src/auth/tokens.ts - src/middleware/auth.ts task_count: 4 created: 2026-03-02 gap_closure: false --- ``` Parsed result: ```json { "status": "planned", "phase": 72, "plan_number": 1, "wave": 1, "depends_on": [], "files_modified": ["src/auth/oauth.ts", "src/auth/tokens.ts", "src/middleware/auth.ts"], "task_count": 4, "created": "2026-03-02", "gap_closure": false } ``` ### 2. Extract Specific Fields Read individual fields without parsing the entire frontmatter: ``` get_field(.planning/phase-72/PLAN-1.md, "wave") -> 1 get_field(.planning/phase-72/PLAN-1.md, "status") -> "planned" get_field(.planning/phase-72/PLAN-1.md, "files_modified") -> ["src/auth/oauth.ts", ...] ``` ### 3. Update Fields Update individual frontmatter fields without modifying bod

What's inside
Steps it walks through
  1. Configuration
  2. Error Handling
  3. Constraints
Ships with 1 file
  • README.md
More from babysitter
All skills →
About this skill
What does the frontmatter-parsing skill do?

YAML frontmatter parsing and manipulation for .planning/ documents. Provides read, write, update, query, and validation operations on frontmatter blocks in GSD markdown artifacts.

How do I install it?

Run `npx skills add a5c-ai/babysitter --skill frontmatter-parsing --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

Keep going