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/react/react/verifynpx skills add react/react --skill verifygit clone --depth 1 https://github.com/react/reactWhat 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 | $0.00023 | $0.00172 |
| Opus 5 | $0.00012 | $0.00086 |
| Sonnet 5 | $0.00005 | $0.00034 |
| Haiku 4.5 | $0.00002 | $0.00017 |
Grade A, and why
verify 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 yesterday.
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
Verification
Run all verification steps.
Arguments:
- $ARGUMENTS: Test pattern for the test step
Instructions
Run these first in sequence:
- Run
yarn prettier- format code (stop if fails) - Run
yarn linc- lint changed files (stop if fails)
Then run these with subagents in parallel:
- Use
/flowto type check (stop if fails) - Use
/testto test changes in source (stop if fails) - Use
/test wwwto test changes in www (stop if fails)
If all pass, show success summary. On failure, stop immediately and report the issue with suggested fixes.
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.
- yesterday First seen · 25 lines · 23 tokens per session scan A 070d8a87c34b
verify is a skill published in the GitHub repository react/react (248,328 stars, last pushed 4d ago), licensed MIT. It adds 23 tokens to every session and 172 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.
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