agentmods.dev

application-performance

Guidance for measuring and improving how quickly and efficiently frontend and backend software runs. Observability means collecting information that helps explain what an application is doing while it runs.

In plain words
What is it for?
Use it to profile applications, optimise frontend or backend code, and set up observability for monitoring.
Why use it?
It helps identify slow or inefficient parts of an application instead of relying on guesses. It also connects performance work with ongoing monitoring.

Plugin for Claude Code

39k +48 yesterday A scan tokens not measured original MIT
View the source file wshobson/agents
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.

Claude Code
/plugin marketplace add wshobson/agents
agentmods
npx agentmods add plugins/wshobson/agents/application-performance
Clone the repo
git clone --depth 1 https://github.com/wshobson/agents

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

application-performance 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.

plugins/application-performance/.claude-plugin/plugin.json · 11 lines

What it actually says

{
  "name": "application-performance",
  "version": "1.3.1",
  "description": "Application profiling, performance optimization, and observability for frontend and backend systems",
  "author": {
    "name": "Seth Hobson",
    "email": "[email protected]"
  },
  "license": "MIT"
}
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. 2d ago First seen · 11 lines scan A 37cc12587e09

Subscribe to this mod's changes

application-performance is a plugin published in the GitHub repository wshobson/agents (39,318 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.

Backend and APIsFrontendagent-skillsagentic-aiagentsai-agentsanthropicantigravity
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