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/bdfinst/agentic-dev-team/react-reactivity-reviewgit clone --depth 1 https://github.com/bdfinst/agentic-dev-teamWhat 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 | $0.00028 | $0.01276 |
| Opus 5 | $0.00014 | $0.00638 |
| Sonnet 5 | $0.00006 | $0.00255 |
| Haiku 4.5 | $0.00003 | $0.00128 |
Grade A, and why
react-reactivity-review 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.
How it starts
The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Reactivity Review
Scope:
- **/*.jsx
- **/*.tsx
- **/*.js
- **/*.ts Cites: [adversarial-review-protocol]
Scope: React component and hook files (.jsx, .tsx, and .js/.ts files
that import from react). Skip this agent entirely if the project has no
react or react-dom dependency in package.json (or equivalent manifest).
Covers React 16.8+ hooks and class-component lifecycle patterns.
Output JSON: per ${CLAUDE_PLUGIN_ROOT}/knowledge/review-agent-output-contract.md (Whole-file load: short, canonical schema).
Status: pass=no reactivity issues, warn=potential concerns, fail=likely silent reactivity breakage Severity: error=silent stale-closure or infinite-loop bug; warning=potential reactivity concern; suggestion=defensive improvement Confidence: high=mechanical fix (add dep, remove inline object); medium=pattern identified but component design may affect the fix; none=requires human judgment
Context needs: full-file
Skip
Return {"status": "skip", "issues": [], "summary": "No React files in target"} when:
- No
react/react-domdependency found in the project manifest (package.json,package-lock.json,yarn.lock, etc.) - No
.jsx/.tsx/.js/.tsfiles import fromreactin the target set
Detect
Whole-file load: ${CLAUDE_PLUGIN_ROOT}/knowledge/reactive-effect-patterns.md for cross-framework effect/watcher patterns shared with Vue and Angular agents before running the React-specific checks below.
Stale closures in useEffect / useCallback / useMemo:
- Callback captures a state or prop variable at mount time and never re-captures it because the dependency array is wrong (missing dep, empty array
[]when deps exist, or no array) - Event handlers defined inside
useEffectthat reference props/state without deps — classic button-click stale counter setTimeout/setIntervalcallbacks capturing stale values — should useuseRefor functional updater (setState(prev => ...))
Missing or incomplete dependency arrays:
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 · 103 lines · 28 tokens per session scan A 48ae7890d101
react-reactivity-review is an agent published in the GitHub repository bdfinst/agentic-dev-team (277 stars, last pushed yesterday), licensed MIT. It adds 28 tokens to every session and 1,276 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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