performance-auditor

performance-auditor is an agent for Claude Code from onlygian/G-Forge. It costs 48 tokens per session (700 once invoked), scanned A, original, GPL-3.0.

A read-only coding agent that examines changes for performance problems. It looks for slow patterns such as O(n²) code, N+1 database queries, unnecessary screen updates, and wasted work on frequently used paths.

In plain words
What is it for?
Use it to review performance-sensitive changes and receive file-and-line findings with estimated impact.
Why use it?
It helps find likely slowdowns before they affect users, without changing the code itself.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Part of the g-forge plugin — 38 skills, 1 command, 69 agents shipped together

Good fit Use it to review performance-sensitive changes and receive file-and-line findings with estimated impact.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/onlygian/g-forge/performance-auditor
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/onlygian/G-Forge

Made for: Claude Code.

Or install g-forge, the plugin that ships this one along with the rest of its 38 skills, 1 command, 69 agents.

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-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/onlygian/g-forge/performance-auditor/github.svg)](https://agentmods.dev/agents/onlygian/g-forge/performance-auditor)
Your own site
<a href="https://agentmods.dev/agents/onlygian/g-forge/performance-auditor"><img src="https://agentmods.dev/badge/agents/onlygian/g-forge/performance-auditor/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-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/onlygian/g-forge/performance-auditor"><img src="https://agentmods.dev/badge/agents/onlygian/g-forge/performance-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 700 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 unknown 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 $0.00048 $0.00700
Opus 5.5 $0.00019 $0.00280
Sonnet 5.5 $0.00010 $0.00140
Haiku 4.5 $0.00005 $0.00070

Measured 1mo ago against content hash 6cdfbcc7ef41, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 1mo 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.

agents/performance-auditor.md · 58 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 1mo ago Changed · -20 lines 6cdfbcc7ef41
  2. 1mo ago First seen · 78 lines · 48 tokens per session scan A 291a1038bfaa

Subscribe to this mod's changes

performance-auditor is an agent published in the GitHub repository onlygian/G-Forge (4 stars, last pushed 8d ago), licensed GPL-3.0. It adds 48 tokens to every session and 700 once invoked, about $0.0002 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 2026-08-31.

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