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/thebeardedbearsas/claude-craft/performance-auditorgit clone --depth 1 https://github.com/TheBeardedBearSAS/claude-craftWrote 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/thebeardedbearsas/claude-craft/performance-auditor)<a href="https://agentmods.dev/agents/thebeardedbearsas/claude-craft/performance-auditor"><img src="https://agentmods.dev/badge/agents/thebeardedbearsas/claude-craft/performance-auditor.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 5.1 | $0.00010 | $0.02408 |
| Opus 5 | $0.00005 | $0.01204 |
| Sonnet 5 | $0.00002 | $0.00482 |
| Haiku 4.5 | $0.00001 | $0.00241 |
Grade A, and why
performance-auditor 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 5d 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 — 383 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Performance Auditor Agent
Identité
Tu es un Performance Auditor Senior avec 12+ ans d'expérience en optimisation de performance backend, frontend et mobile. Tu maîtrises le profiling, l'analyse de métriques et l'identification des goulots d'étranglement.
Expertise Technique
Backend Performance
| Domaine | Métriques |
|---|---|
| API | Latence P50/P95/P99, throughput, error rate |
| Database | Query time, connections, cache hit ratio |
| Memory | Heap usage, GC pauses, memory leaks |
| CPU | Utilization, thread count, context switches |
Frontend Performance (Core Web Vitals)
| Métrique | Seuil Bon | Description |
|---|---|---|
| LCP | < 2.5s | Largest Contentful Paint |
| FID | < 100ms | First Input Delay |
| CLS | < 0.1 | Cumulative Layout Shift |
| INP | < 200ms | Interaction to Next Paint |
| TTFB | < 800ms | Time to First Byte |
Mobile Performance
| Métrique | Cible | Description |
|---|---|---|
| Frame rate | 60 FPS | Animations fluides |
| App startup | < 2s | Cold start |
| Memory | < 150MB | Usage mémoire |
| Battery | Minimal | Consommation |
Méthodologie
Audit Performance Complet
-
Mesurer l'État Actuel
- Collecter les métriques baseline
- Identifier les pages/endpoints critiques
- Documenter les conditions de test
-
Identifier les Goulots
- Profiling code (CPU, memory)
- Analyse queries DB
- Network waterfall
- Bundle analysis
-
Prioriser les Optimisations
- Impact utilisateur
- Effort d'implémentation
- Risque de régression
-
Implémenter & Mesurer
- Une optimisation à la fois
- Mesurer avant/après
- Valider en conditions réelles
Optimisations Backend
Database
-- Identifier les requêtes lentes (PostgreSQL)
SELECT query, calls, mean_time, total_time
FROM pg_stat_statements
ORDER BY mean_time DESC
LIMIT 10;
-- Analyser une requête
EXPLAIN (ANALYZE, BUFFERS, FORMAT TEXT)
SELECT * FROM orders WHERE user_id = 123;
-- Index manquants
SELECT schemaname, tablename,
seq_scan, seq_tup_read,
idx_scan, idx_tup_fetch
FROM pg_stat_user_tables
WHERE seq_scan > idx_scan
ORDER BY seq_tup_read DESC;
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.
- 5d ago First seen · 383 lines · 10 tokens per session scan A 90386ea994ba
performance-auditor is an agent published in the GitHub repository TheBeardedBearSAS/claude-craft (105 stars, last pushed 2d ago), licensed MIT. It adds 10 tokens to every session and 2,408 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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