performance-tester

performance-tester is an agent for Claude Code from duc01226/EasyPlatform. It costs 40 tokens per session (14,435 once invoked), scanned B, original, MIT.

A coding aid for creating or reviewing performance tests, which measure how software behaves under heavy use, long runs, or limited resources.

In plain words
What is it for?
Use it to write, update, or statically review load, soak, capacity, and performance-test harnesses and their evaluation rules.
Why use it?
It helps teams check capacity and reliability with realistic workloads, test data, resource limits, measurements, and pass/fail rules without claiming results that were not measured.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter; reads .claude/ paths; mentions subagents.

Good fit Use it to write, update, or statically review load, soak, capacity, and performance-test harnesses and their evaluation rules.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/duc01226/easyplatform/performance-tester
Install

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.

Clone the repo
git clone --depth 1 https://github.com/duc01226/EasyPlatform

Made for: Claude Code.

Wrote 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.

agentmods badge for performance-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/duc01226/easyplatform/performance-tester/github.svg)](https://agentmods.dev/agents/duc01226/easyplatform/performance-tester)
Your own site
<a href="https://agentmods.dev/agents/duc01226/easyplatform/performance-tester"><img src="https://agentmods.dev/badge/agents/duc01226/easyplatform/performance-tester/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for performance-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/duc01226/easyplatform/performance-tester"><img src="https://agentmods.dev/badge/agents/duc01226/easyplatform/performance-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 14,435 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00040 $0.14435
Opus 5.5 $0.00016 $0.05774
Sonnet 5.5 $0.00008 $0.02887
Haiku 4.5 $0.00004 $0.01443

Measured 3d ago against content hash 1af335ade033, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

performance-tester scanned grade B with 1 finding 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 3d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

> 3. Optional: when grep and reading alone may not reveal a high-risk blast radius, `python .claude/scripts/code_graph trace <file> --direction both --json` (when `.code-graph/graph.db` exists) can add callers and depend
.claude/agents/performance-tester.md · 548 lines

How it starts

The opening of the file, as written. The whole thing — 548 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Connected Skill Contracts

Skill connection: Apply the task-specific procedure from the connected canonical skill contract that matches the assigned brief. The role-specific quality SYNC blocks in this prompt are the static sub-agent quality protocol; do not expand orchestrator-only instructions inside a leaf assignment.

Connected contracts:

  • performance-test

Quick Summary

Goal: Deliver reusable, realistic performance tests whose workload, data, resource and evidence gates protect the project's intended capacity without claiming unmeasured results.

Summary: Resolve the brief/mode and project preferences → inspect/reuse the harness and stack research → author or statically review applicable gates → validate findings and return evidence to the caller. Write/update never runs tests; the caller owns the two-round post-write review and explicit verification decision.

Workflow: Resolve → discover → write/update or review → report; runtime verification stays with the explicitly authorized skill coordinator.

Key Rules: Apply the connected performance-test skill and its directly linked references. Review/report-only/caller-owned assignments write only reports. Writing is limited to assigned test/harness/config/docs paths. Do not run tests, start services, seed data, fix product bottlenecks, spawn agents or ask the user from a leaf assignment.

Contents

Role

Specialize in performance-test design and quality. Product bottleneck investigation belongs to performance-review / performance-optimizer; this role reviews whether tests can expose those failures. The connected skill is the single procedure owner; its quality gates and canonical shared protocol bodies govern both authoring and review.

Read the full file on GitHub · 548 lines

Changes

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.

  1. 3d ago First seen · 548 lines · 40 tokens per session scan B 1af335ade033

Subscribe to this mod's changes

performance-tester is an agent published in the GitHub repository duc01226/EasyPlatform (12 stars, last pushed yesterday), licensed MIT. It adds 40 tokens to every session and 14,435 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-18.

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