validation-authority

validation-authority is a skill for Claude Code from rjmurillo/ai-agents. It costs 36 tokens per session (1,165 once invoked), scanned A, original, MIT.

A guideline for handling failures from external code validators such as ESLint or PSScriptAnalyzer. It says to respect the validator's own rules and adjust local configuration rather than changing the validator itself.

In plain words
What is it for?
Use it when validation fails unexpectedly, when adding a validator, or before suppressing warnings or changing validator configuration.
Why use it?
It prevents fixes that hide warnings or alter upstream tools without understanding their intended behavior. This keeps validation results consistent with the tools the project depends on.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Part of the project-toolkit plugin — 95 skills, 26 commands, 33 agents, 4 hooks shipped together

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/rjmurillo/ai-agents/validation-authority
Any agent
npx skills add rjmurillo/ai-agents --skill validation-authority
Clone the repo
git clone --depth 1 https://github.com/rjmurillo/ai-agents

Made for: Claude Code.

Or install project-toolkit, the plugin that ships this one along with the rest of its 95 skills, 26 commands, 33 agents, 4 hooks.

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 validation-authority

README.md
[![agentmods](https://agentmods.dev/badge/skills/rjmurillo/ai-agents/validation-authority.svg)](https://agentmods.dev/skills/rjmurillo/ai-agents/validation-authority)
Your own site
<a href="https://agentmods.dev/skills/rjmurillo/ai-agents/validation-authority"><img src="https://agentmods.dev/badge/skills/rjmurillo/ai-agents/validation-authority.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,165 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 $0.00036 $0.01165
Opus 5 $0.00018 $0.00583
Sonnet 5 $0.00007 $0.00233
Haiku 4.5 $0.00004 $0.00117

Measured 2d ago against content hash 0b8799627fe9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

validation-authority 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.

.claude/skills/validation-authority/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Validation Authority

When integrating external validators (PSScriptAnalyzer, markdownlint, ESLint, etc.), respect upstream defaults. Modify local configuration to match upstream behavior. Do not modify upstream tool code.

Triggers

Activate when:

  • Validation fails unexpectedly
  • Before modifying validator behavior or configuration
  • When tempted to change upstream tool source code
  • When adding a new external validator to the project
  • When suppressing validator warnings without rationale

Decision Tree

Validation failure occurred
        |
        v
Is the validator upstream (external tool)?
        |               |
       YES              NO (local/custom)
        |               |
        v               v
Modify LOCAL config   Modify tool as needed
to align with tool    (you own the code)
        |
        v
Document override rationale
in config comments

Process

  1. Classify the validator: Determine if the tool is upstream (external) or local (project-owned).
  2. Identify the conflict: Find the specific rule or default causing the failure.
  3. Check upstream defaults: Read the tool's documentation for the default behavior.
  4. Align local config: Update project configuration files to match or explicitly override upstream defaults.
  5. Document overrides: Add comments explaining why any override differs from the upstream default.

Trigger Table

Scenario Action Example
PSScriptAnalyzer rule fails Update .psscriptanalyzerrc.psd1 Suppress PSAvoidUsingWriteHost with rationale
markdownlint rule fails Update .markdownlint.yaml Disable MD013 line-length for generated docs
ESLint rule conflicts Update .eslintrc Override no-console for CLI tools
Upstream tool has a bug File issue upstream, add workaround in config Pin tool version, suppress specific rule
Tool default changed after upgrade Review and align local config to new default Update config after major version bump

Read the full file on GitHub · 144 lines

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 · 144 lines · 36 tokens per session scan A 0b8799627fe9

Subscribe to this mod's changes

validation-authority is a skill published in the GitHub repository rjmurillo/ai-agents (45 stars, last pushed today), licensed MIT. It adds 36 tokens to every session and 1,165 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 2026-09-03.