validate-code

A code-checking guide for TypeScript projects that runs type checks, linting, and formatting checks before commits.

In plain words
What is it for?
Use it to validate changes, run individual checks, fix lint or formatting issues, and investigate TypeScript errors.
Why use it?
It finds common code-quality and type problems before they reach a commit or review.

Skill for Claude CodeCodexCursor

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/jamesjfoong/github-pr-review-mcp/validate-code
Any agent
npx skills add jamesjfoong/github-pr-review-mcp --skill validate-code
Clone the repo
git clone --depth 1 https://github.com/jamesjfoong/github-pr-review-mcp

Made for: Claude Code, Codex, Cursor.

Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 280 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 $0.00019 $0.00280
Opus 5 $0.00010 $0.00140
Sonnet 5 $0.00004 $0.00056
Haiku 4.5 $0.00002 $0.00028

Measured 2d ago against content hash da823419dadb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-code 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.

.cursor/skills/validate-code/SKILL.md · 58 lines

What it actually says

Validate Code

When to Use

  • Before committing any changes
  • When fixing linting or type errors
  • When code quality checks fail

Quick Validation

npm run validate

Runs: type-check + lint + format-check

Fix Issues

# Fix linting
npm run lint:fix

# Fix formatting
npm run format

# Re-validate
npm run validate

Individual Checks

npm run type-check    # TypeScript only
npm run lint          # ESLint only
npm run format:check  # Prettier only

Common Type Errors

Error Fix
Implicit any Add explicit type annotations
Type mismatch Verify schema matches type
Missing properties Use optional ? if needed
Optional values Use ? instead of | null | undefined

Debugging Steps

  1. Run npm run type-check to see all errors
  2. Check Zod schemas match expected structure
  3. Ensure types exported from types.ts
  4. Verify optional properties use ?
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 · 58 lines · 19 tokens per session scan A da823419dadb

Subscribe to this mod's changes

validate-code is a skill published in the GitHub repository jamesjfoong/github-pr-review-mcp (1 stars, last pushed 6mo ago), licensed MIT. It adds 19 tokens to every session and 280 once invoked, about $0.0001 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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