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 skills/dvasyliev/ai-dev-tools-getting-started/react-performancenpx skills add dvasyliev/ai-dev-tools-getting-started --skill react-performancegit clone --depth 1 https://github.com/dvasyliev/ai-dev-tools-getting-startedWhat 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 | $0.00027 | $0.02554 |
| Opus 5 | $0.00014 | $0.01277 |
| Sonnet 5 | $0.00005 | $0.00511 |
| Haiku 4.5 | $0.00003 | $0.00255 |
Grade A, and why
react-performance 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 2d ago First seen · 500 lines · 27 tokens per session scan A 0bf6aca420fb
react-performance is a skill published in the GitHub repository dvasyliev/ai-dev-tools-getting-started (21 stars, last pushed 4mo ago), with no licence file. It adds 27 tokens to every session and 2,554 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 2026-08-30.
Other skills, from other repositories
fastapi_stripe
A Stripe Checkout implementation takes four steps.
standalone-python-scripts
Skill "standalone-python-scripts" from iloveitaly/llm-ide-rules, covering standalone python scripts, /// script, requires-python = ">=3.13", dependencies = [] and ///.
secrets
Here's how environment variables are managed in this application.
fix-tests
Focus on all unit + command tests (pytest --exclude tests/integration). Make sure they pass and fix errors. If you run into anything very odd: stop, and let me know. Mutate test code first and let me know if you think you should update application code.
plan-only
As this point, I only want to talk about the plan. How would you do this? What would you refactor to make this design clean? You are an expert software engineer and I want you to think hard about how to plan this project out.
dev-in-browser
Use your browser to view https://verso.localhost which is tied to livereload dev server which is already running. You can inspect that page (including taking screenshots!) to validate that your changes fixed the issue.