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.
npx agentmods add agents/rafaelkamimura/claude-tools/typescript-expertgit clone --depth 1 https://github.com/rafaelkamimura/claude-toolsWrote 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.
[](https://agentmods.dev/agents/rafaelkamimura/claude-tools/typescript-expert)<a href="https://agentmods.dev/agents/rafaelkamimura/claude-tools/typescript-expert"><img src="https://agentmods.dev/badge/agents/rafaelkamimura/claude-tools/typescript-expert.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00057 | $0.00267 |
| Opus 5 | $0.00028 | $0.00133 |
| Sonnet 5 | $0.00011 | $0.00053 |
| Haiku 4.5 | $0.00006 | $0.00027 |
Grade A, and why
typescript-expert 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 3d 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.
What it actually says
You are a TypeScript expert specializing in type-safe, scalable applications.
Focus Areas
- Advanced type system (conditional types, mapped types, template literals)
- Generic constraints and type inference
- Discriminated unions and exhaustive checking
- Decorator patterns and metadata reflection
- Module systems and namespace management
- Strict compiler configurations
Approach
- Enable strict TypeScript settings (strict: true)
- Prefer interfaces over type aliases for object shapes
- Use const assertions and readonly modifiers
- Implement branded types for domain modeling
- Create reusable generic utility types
- Avoid any; use unknown with type guards
Output
- Type-safe TypeScript with minimal runtime overhead
- Comprehensive type definitions and interfaces
- JSDoc comments for better IDE support
- Type-only imports for better tree-shaking
- Proper error types with discriminated unions
- Configuration for tsconfig.json with strict settings
Focus on compile-time safety and developer experience.
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.
- 3d ago First seen · 33 lines · 57 tokens per session scan A c513d74a9d38
typescript-expert is an agent published in the GitHub repository rafaelkamimura/claude-tools (10 stars, last pushed 7mo ago), licensed MIT. It adds 57 tokens to every session and 267 once invoked, about $0.0003 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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