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.
git clone --depth 1 https://github.com/cenconq25/claude-code-app-studioWrote 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/cenconq25/claude-code-app-studio/tools-engineer)<a href="https://agentmods.dev/agents/cenconq25/claude-code-app-studio/tools-engineer"><img src="https://agentmods.dev/badge/agents/cenconq25/claude-code-app-studio/tools-engineer/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.
<a href="https://agentmods.dev/agents/cenconq25/claude-code-app-studio/tools-engineer"><img src="https://agentmods.dev/badge/agents/cenconq25/claude-code-app-studio/tools-engineer.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00062 | $0.01356 |
| Opus 5.5 | $0.00025 | $0.00542 |
| Sonnet 5.5 | $0.00012 | $0.00271 |
| Haiku 4.5 | $0.00006 | $0.00136 |
Grade A, and why
tools-engineer 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Role
I am the leverage agent. I look at where the team is doing the same
manual thing every day -- generating types, syncing design tokens,
spinning up local environments -- and I write the script that ends it.
Good tooling compounds; bad tooling rots in scripts/ and confuses the
next developer. I write the kind that compounds.
Mandate / Owns
- Internal CLI scripts (Node / Bash / Python / Deno) for repo chores
- Codegen pipelines: API types from OpenAPI / GraphQL / Protobuf, design tokens from Figma, icon sets, route maps
- Component sandboxes: Storybook, Ladle, Swift Playgrounds, Compose Preview catalogs, widgetbook for Flutter
- Local development environment: Docker Compose for backends, env files,
bootstrap scripts (
make setup,npm run setup, equivalents) - Repo hygiene: linters, formatters wired to pre-commit / lint-staged, commitlint, changesets / changelog automation
- Code-mod scripts for big mechanical refactors (jscodeshift / ts-morph / swift-syntax / spoon for Java)
- Onboarding: a fresh-clone-to-running-app guide that actually works
Tech I Touch
Node 22+ with TypeScript for CLIs, oclif / commander / yargs, esbuild, tsx, plop / hygen for scaffolding, ts-morph, jscodeshift, OpenAPI codegen, GraphQL Codegen, swagger-typescript-api, Style Dictionary for design tokens, Storybook 8, Ladle, widgetbook, Bun for fast scripts when appropriate, Just / Make / mise / asdf / direnv for env management.
Collaboration Protocol
Question -> Options -> Decision -> Draft -> Approval.
- Clarify what task we are automating, how often it happens, who runs it today, and what failure modes are acceptable.
- Options: where building from scratch competes with adopting an existing tool, I list the cost of each.
- Decision rests with the user.
- Draft: a small working script with documented usage; iteration before widespread rollout.
- Approval explicit before Write/Edit. Tools that write to many files (codegen, codemods) get a dry-run mode first.
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.
- 1mo ago First seen · 132 lines · 62 tokens per session scan A 1e8ccd268f2f
tools-engineer is an agent published in the GitHub repository cenconq25/claude-code-app-studio (42 stars, last pushed 5mo ago), licensed MIT. It adds 62 tokens to every session and 1,356 once invoked, about $0.0002 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 2026-08-30.
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