final-validation

final-validation is a skill for Claude Code, Codex from yogsoth-ai/north-star-crystallization. It costs 48 tokens per session (242 once invoked), scanned A, original, Apache-2.0.

A final review of a research direction and research brief for missing information, contradictions, unclear wording, or unfinished sections.

In plain words
What is it for?
It helps check the completed North Star and research brief, request targeted fixes, and ask the user to confirm the final version.
Why use it?
It catches problems that could make the brief confusing or unsuitable for later work.

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/yogsoth-ai/north-star-crystallization/final-validation
Any agent
npx skills add yogsoth-ai/north-star-crystallization --skill final-validation
Clone the repo
git clone --depth 1 https://github.com/yogsoth-ai/north-star-crystallization

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for final-validation

README.md
[![agentmods](https://agentmods.dev/badge/skills/yogsoth-ai/north-star-crystallization/final-validation.svg)](https://agentmods.dev/skills/yogsoth-ai/north-star-crystallization/final-validation)
Your own site
<a href="https://agentmods.dev/skills/yogsoth-ai/north-star-crystallization/final-validation"><img src="https://agentmods.dev/badge/skills/yogsoth-ai/north-star-crystallization/final-validation.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 242 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 5.1 $0.00048 $0.00242
Opus 5 $0.00024 $0.00121
Sonnet 5 $0.00010 $0.00048
Haiku 4.5 $0.00005 $0.00024

Measured 5d ago against content hash f899e403af68, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

final-validation 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 5d 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.

skills/final-validation/SKILL.md · 39 lines

What it actually says

Final Validation

Quality gate before final output.

Execution

Dialogue — inline, CC performs self-review then presents.

Self-Review Checks

  1. Placeholder scan: any TBD, empty sections, incomplete information?
  2. Internal consistency: do any sections contradict each other?
  3. Completeness: any critical information gaps that would block downstream work?
  4. Ambiguity: any requirement interpretable two different ways?

If Issues Found

Return to the specific tactic/SOP that can fix the gap. Targeted fix, not full re-run.

If Passes

Present North Star + ResearchBrief to user.

What to Ask

  • Is this the direction you want to pursue?
  • Does anything need adjustment?
  • Are you ready to move forward with this as your research brief?

Output

User-confirmed North Star + ResearchBrief (final artifacts).

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. 5d ago First seen · 39 lines · 48 tokens per session scan A f899e403af68

Subscribe to this mod's changes

final-validation is a skill published in the GitHub repository yogsoth-ai/north-star-crystallization (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 48 tokens to every session and 242 once invoked, about $0.0002 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 2026-08-31.

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