validate-context

validate-context is a skill for Claude Code, Codex from andrefigueira/.context. It costs 31 tokens per session (265 once invoked), scanned A, original, MIT.

A checker for a project's .context/ documentation, which stores project rules and technical knowledge for coding agents. It reviews the documents for structure, links, size, accuracy, and consistency with the codebase.

In plain words
What is it for?
Use it after changing .context/ files to check domain documents, ADRs (records of important technical decisions), and references in CLAUDE.md and AGENTS.md.
Why use it?
It helps catch outdated instructions, missing sections, broken references, and documentation that has grown too large to be useful.

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

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 validate-context

README.md
[![agentmods](https://agentmods.dev/badge/skills/andrefigueira/.context/validate-context.svg)](https://agentmods.dev/skills/andrefigueira/.context/validate-context)
Your own site
<a href="https://agentmods.dev/skills/andrefigueira/.context/validate-context"><img src="https://agentmods.dev/badge/skills/andrefigueira/.context/validate-context.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 265 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 $0.00031 $0.00265
Opus 5 $0.00015 $0.00133
Sonnet 5 $0.00006 $0.00053
Haiku 4.5 $0.00003 $0.00026

Measured 5d ago against content hash ec302fd351ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-context 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.

.claude/skills/validate-context/SKILL.md · 33 lines

What it actually says

Validate the .context/ documentation for quality and conformance.

Checks to perform

  1. File size: Flag any .context/ file over 200 lines (context bloat risk)
  2. Required sections: Each domain file should have Overview, Implementation Patterns, and Decision History sections
  3. Broken links: Check that all markdown links to other .context/ files point to files that exist
  4. Index sync: Verify CLAUDE.md and AGENTS.md reference all files that exist in .context/
  5. Stale content: Flag files that reference patterns or technologies not present in the codebase
  6. ADR completeness: Check all ADRs have Status, Context, Decision, and Consequences sections

Output format

Report findings as:

Passed

  • List of checks that passed

Issues Found

  • File: issue description
  • Suggested fix

Recommendations

  • Any improvements to documentation quality
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 · 33 lines · 31 tokens per session scan A ec302fd351ad

Subscribe to this mod's changes

validate-context is a skill published in the GitHub repository andrefigueira/.context (253 stars, last pushed 4mo ago), licensed MIT. It adds 31 tokens to every session and 265 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 2026-08-30.

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