validate-v2

validate-v2 is a skill for Claude Code from jakkaj/tools. It costs 77 tokens per session (3,184 once invoked), scanned A, original, MIT.

A validation guide for checking whatever an agent has just produced, such as a plan, task list, document, workshop, or code change. It chooses checks based on the type and risk of the result, then reports findings that could change the next action.

In plain words
What is it for?
Use it to validate a file or change, run focused checks, add independent review for higher-risk work, and issue a final assessment.
Why use it?
It helps prove important claims and catch meaningful problems without applying a full review process to every small result. It is read-only unless a narrowly defined document repair is authorized.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Good fit Use it to validate a file or change, run focused checks, add independent review for higher-risk work, and issue a final assessment.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jakkaj/tools/validate-v2
View source ↗ jakkaj/tools
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.

Any agent
npx skills add jakkaj/tools --skill validate-v2
Clone the repo
git clone --depth 1 https://github.com/jakkaj/tools

Made for: Claude Code.

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 validate-v2

README.md
[![agentmods](https://agentmods.dev/badge/skills/jakkaj/tools/validate-v2/github.svg)](https://agentmods.dev/skills/jakkaj/tools/validate-v2)
Your own site
<a href="https://agentmods.dev/skills/jakkaj/tools/validate-v2"><img src="https://agentmods.dev/badge/skills/jakkaj/tools/validate-v2/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for validate-v2

Your own site · 80×15
<a href="https://agentmods.dev/skills/jakkaj/tools/validate-v2"><img src="https://agentmods.dev/badge/skills/jakkaj/tools/validate-v2.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,184 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00077 $0.03184
Opus 5.5 $0.00031 $0.01274
Sonnet 5.5 $0.00015 $0.00637
Haiku 4.5 $0.00008 $0.00318

Measured 2mo ago against content hash 73f6a7ba2181, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

validate-v2 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 2mo 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/SDD/validate-v2/SKILL.md · 210 lines

How it starts

The opening of the file, as written. The whole thing — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.

validate-v2

Adaptive, high-signal validation of whatever was just produced — a unified plan, tasks dossier, code change, workshop, legacy spec, or any artifact.

Prove the claims that matter, report only findings likely to change action, and spend extra review agents only when risk or uncertainty earns them.

Optimise for precision and trust first; raise recall without turning every artifact into a four-agent audit. The validator judges whether the artifact serves its reason for existing — locally correct work that does not advance its purpose still fails. It is read-only through adjudication; only mechanical, evidence-pinned document repair may follow.

User input:

$ARGUMENTS
# No flags → ADAPTIVE: lead + deterministic proof, one independent critic only for nontrivial work.
# --artifact <path>   validate this file/diff (overrides conversational inference)
# --scope narrow      lead + deterministic checks; at most one critic
# --scope broad       lead + up to three independent critics, one per DISTINCT risk

The lead (you) owns target detection, contract derivation, commands, history ranking, routing, adjudication, repair authorization, the verdict, and persistence. Workers only propose findings — their formatting never establishes truth.

Pipeline

resolve target + revision → one compact Validation Contract → deterministic proof + cheap history
→ risk-triggered lenses → lead review + critic(s) when useful → verify & disprove every finding
→ +1 specialist only for an unresolved independent risk → compact verdict
→ safe doc repair + targeted re-check (when eligible) → compact sidecar record (when appropriate)

Load a reference only when the target needs it:

  • references/artifact-checks.md — per-type deterministic checks (unified plan, legacy spec, tasks, code, workshop, general).
  • references/contract-and-forward-compatibility.md — proof levels, authority order, history labels, the five compatibility modes, next-phase traversal.
  • references/record-template.md — sidecar placement + template.
  • references/examples.md — worked thesis / forward-compatibility examples.

Read the full file on GitHub · 210 lines

Files

What ships with it

4 files 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. 2mo ago First seen · 210 lines · 77 tokens per session scan A 73f6a7ba2181

Subscribe to this mod's changes

validate-v2 is a skill published in the GitHub repository jakkaj/tools (5 stars, last pushed 24d ago), licensed MIT. It adds 77 tokens to every session and 3,184 once invoked, about $0.0003 per session on Opus 5.5. 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.

Related

validate-v2 compared with skills from other repositories

validate-v2 next to 6 skills from other repositories
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