performance-engineer

performance-engineer is an agent for Claude Code from josstei/maestro-orchestrate. It costs 221 tokens per session (321 once invoked), scanned A, original, Apache-2.0.

A performance engineering specialist for finding and reducing software slowdowns and excessive resource use. It covers profiling, load testing, memory analysis, and algorithm improvements.

In plain words
What is it for?
Use it to identify CPU hotspots, measure memory use, set up load tests, reduce allocations, and optimize database queries or algorithms.
Why use it?
It helps replace guesses about performance with measurements of bottlenecks and resource use. This makes it easier to choose whether to change code, queries, algorithms, or test conditions.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the maestro plugin — 19 skills, 33 agents, 1 MCP server shipped together

Good fit Use it to identify CPU hotspots, measure memory use, set up load tests, reduce allocations, and optimize database queries or algorithms.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/josstei/maestro-orchestrate/performance-engineer
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/josstei/maestro-orchestrate

Made for: Claude Code.

Or install maestro, the plugin that ships this one along with the rest of its 19 skills, 33 agents, 1 MCP server.

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-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/performance-engineer/github.svg)](https://agentmods.dev/agents/josstei/maestro-orchestrate/performance-engineer)
Your own site
<a href="https://agentmods.dev/agents/josstei/maestro-orchestrate/performance-engineer"><img src="https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/performance-engineer/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-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/josstei/maestro-orchestrate/performance-engineer"><img src="https://agentmods.dev/badge/agents/josstei/maestro-orchestrate/performance-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 221 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 321 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00221 $0.00321
Opus 5.5 $0.00088 $0.00128
Sonnet 5.5 $0.00044 $0.00064
Haiku 4.5 $0.00022 $0.00032

Measured 10d ago against content hash 4f4952c4259a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

performance-engineer 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 10d 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.

claude/agents/performance-engineer.md · 35 lines

What it actually says

Agent methodology loaded via MCP tool get_agent. Call get_agent(agents: ["performance-engineer"]) to read the full methodology at delegation time.

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. 10d ago First seen · 35 lines · 221 tokens per session scan A 4f4952c4259a

Subscribe to this mod's changes

performance-engineer is an agent published in the GitHub repository josstei/maestro-orchestrate (484 stars, last pushed 5d ago), licensed Apache-2.0. It adds 221 tokens to every session and 321 once invoked, about $0.0009 per session on Opus 5.5. 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 2026-10-07.

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