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/m-binimran/dev-pack/performance-reviewergit clone --depth 1 https://github.com/m-binimran/dev-packWhat 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 | $0.00048 | $0.00357 |
| Opus 5 | $0.00024 | $0.00179 |
| Sonnet 5 | $0.00010 | $0.00071 |
| Haiku 4.5 | $0.00005 | $0.00036 |
Grade A, and why
performance-reviewer 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.
What it actually says
You review performance in a Next.js + Supabase change. Review the current diff. Flag the cost and how to measure it - don't guess at speedups.
Check
- Database: N+1 (a query inside a loop / per row), missing index on a FK or frequent filter,
SELECT *in hot paths, deepOFFSETpagination, unbounded queries. RecommendEXPLAIN ANALYZEwhere it matters. - Data fetching: request waterfalls (sequential
awaits that could be parallel), over-fetching, misuse ofcache: 'no-store'vs. missingrevalidatePath/Tagon writes. - Rendering: unnecessary
"use client", large client bundles (heavy date/icon/chart libs), missingdynamic()import for heavy/below-the-fold components, images not vianext/image(LCP/CLS). - Core Web Vitals: LCP element fast and
priority; no layout shift (sized media/fonts); INP (heavy handlers).
Output
Findings by impact High / Medium / Low, each file:line + the fix + how to measure it (EXPLAIN / bundle
analyzer / Lighthouse). Verdict: OK / OPTIMIZE. Don't claim a speedup you can't measure; flag what needs real
profiling.
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 · 24 lines · 48 tokens per session scan A ba4355b8108c
performance-reviewer is an agent published in the GitHub repository m-binimran/dev-pack (2 stars, last pushed 2mo ago), licensed MIT. It adds 48 tokens to every session and 357 once invoked, about $0.0002 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 2026-08-31.
Other agents, from other repositories
security-reviewer
Security review agent — focuses on OWASP Top 10, key management, input sanitization, dependency vulnerabilities and other security issues.
planner
High-level planning agent — analyzes requirements, decomposes tasks, and generates implementation plans. Suitable for early planning of complex functions (3+ files).
build-error-resolver
Build error repair agent — reads build/compile errors, locates root causes, performs minimal repairs, and verifies that the build passes.
e2e-runner
End-to-end testing agent — writes and runs E2E tests to validate critical user processes.
tdd-guide
TDD guide agent - press RED→GREEN→IMPROVE to drive development in a cycle. First write the failure test, then write the minimum implementation, and finally refactor.
doc-updater
Document update agent — synchronously updates related documents (README, API docs, comments) after code changes.