validate

A validation skill for checking notes against domain-specific templates and schemas, which are rules for how notes should be structured.

In plain words
What is it for?
Use it to validate one note or all notes, checking required fields, YAML formatting, allowed values, description quality, links, and cross-references.
Why use it?
It catches missing fields, invalid values, weak descriptions, broken links, and other structure problems before they spread.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/agenticnotetaking/arscontexta/validate
Any agent
npx skills add agenticnotetaking/arscontexta --skill validate
Clone the repo
git clone --depth 1 https://github.com/agenticnotetaking/arscontexta

Made for: Claude Code, Codex.

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,741 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00061 $0.02741
Opus 5 $0.00030 $0.01371
Sonnet 5 $0.00012 $0.00548
Haiku 4.5 $0.00006 $0.00274

Measured 2d ago against content hash 39700ec1a7f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skill-sources/validate/SKILL.md · 311 lines

How it starts

The opening of the file, as written. The whole thing — 311 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Runtime Configuration (Step 0 — before any processing)

Read these files to configure domain-specific behavior:

  1. ops/derivation-manifest.md — vocabulary mapping, platform hints

    • Use vocabulary.notes for the notes folder name
    • Use vocabulary.note / vocabulary.note_plural for note type references
    • Use vocabulary.topic_map for MOC references
    • Use vocabulary.templates for the templates folder path
  2. ops/config.yaml — processing depth

    • processing.depth: deep | standard | quick

If these files don't exist, use universal defaults.

Processing depth adaptation:

Depth Validation Behavior
deep Full schema validation. All checks enabled including composability analysis and cross-reference verification
standard Full validation — all checks enabled
quick Basic schema validation only — required fields, YAML validity, enum values

EXECUTE NOW

Target: $ARGUMENTS

Parse immediately:

  • If target contains a note name: validate that specific note
  • If target contains --handoff: output RALPH HANDOFF block at end
  • If target is "all" or "notes": validate all notes in {DOMAIN:notes}/ directory
  • If target is empty: ask which note to validate

Execute these steps:

Step 1: Locate Template

Determine which template applies to the target note:

  1. Check the note's location — notes in {DOMAIN:notes}/ use the standard note template
  2. Check the type field in frontmatter — specialized types may have dedicated templates
  3. Look for a templates directory (check ops/templates/ or domain-specific path from derivation manifest)
  4. If the template has a _schema block, read it — this is the authoritative schema definition

If no template is found, use the default schema checks below.

Step 2: Read Target Note

Read the target note's full YAML frontmatter. Parse:

  • All YAML fields and their values
  • The body content (for link scanning)
  • The footer section (for Topics and Relevant Notes)

Read the full file on GitHub · 311 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 311 lines · 61 tokens per session scan A 39700ec1a7f1

Subscribe to this mod's changes

validate is a skill published in the GitHub repository agenticnotetaking/arscontexta (3,486 stars, last pushed 6mo ago), licensed MIT. It adds 61 tokens to every session and 2,741 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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