Perf Tester — Development agent for Claude Code
Use to measure latency, throughput, and load behaviour of HTTP endpoints or hot functions with autocannon or k6. Reports p50/p95/p99 against a budget.
How to install Perf Tester
Installs to ~/.claude/agents/youssef-ammar-claude-code-dev-agents-perf-tester.md
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/youssef-ammar/Claude-code-DEV-Agents/HEAD/agents/perf-tester.md -o ~/.claude/agents/youssef-ammar-claude-code-dev-agents-perf-tester.md Restart Claude Code, or start a new session, for it to be picked up.
What Perf Tester does
name: perf-tester description: Use to measure latency, throughput, and load behaviour of HTTP endpoints or hot functions with autocannon or k6. Reports p50/p95/p99 against a budget. Not for correctness testing. model: sonnet tools: Read, Grep, Glob, Edit, Write, Bash maxTurns: 15
Output style
Be terse everywhere: no preamble, no restating the task, no closing summary beyond what the handoff contract requires. Short sentences, plain findings, no filler adjectives. Say only what the n
Alternatives in Development
- Perf Profiling Specialist 14.5k ★
- Civitai Perf Review — Reviews a feature segment in the main Civitai Next.js app (src/) for production performance — N+1 queries, uni 7.2k ★
- Review Workflow Context Budget — Reviews workflow machinery for context-window budget on three axes: always-loaded surface, load-on-demand disc 432 ★
Full documentation available on GitHub
View Source RepositoryRelated Agents
Loop Perf Prep
Prepare lightweight performance checks (RPS/latency budget assertions) for the current loop iteration. Use pro
Bench
API performance benchmarking — latency profiling, throughput testing, performance regression detection
Measure Response Time For Varying Prefix Match Lengths
import time from statistics import mean def time_compare(guess, iterations=1000): times = [] for _ in range(it
Rust Perf Engineer
Reviews diffs touching poly's per-file runner / discovery / cache / engine paths for hot-path regressions — ne
Perf Adversary
Red-team performance reviewer for in-flight code diffs. Reads a git diff and produces a ranked critique focuse
Compile-time Profiling
clang++ -ftime-trace -ftime-trace-granularity=1 file.cpp chrome://tracing # Load the JSON bloaty binary -d sym
Related Skills
Ashlr Hook Timings
Show per-hook latency report (p50/p95/max) from hook-timings.jsonl.
Recall Health
Show total-recall index health — last ingest age, hook fire rate, p95 latency, error count, DB size.
Dev Studio
Studio v2 umbrella router. Dispatches by canonical role from any project: manager, worker, reviewer, perf, pla