performance-analyst

performance-analyst is an agent for coding agents from mpge/look-for-work-claude. It costs 14 tokens per session (275 once invoked), scanned A, original, MIT.

A code-review agent focused on finding slow operations, wasted resources, and places where a program could run more efficiently.

In plain words
What is it for?
Use it to review code for database, memory, network, caching, algorithm, and concurrency issues, with locations, severity, impact, and suggested fixes.
Why use it?
It helps locate performance problems such as excessive database queries, memory leaks, blocking work, unnecessary network calls, or inefficient algorithms.

Agent

Part of the look-for-work plugin — 1 command, 6 agents shipped together

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.

agentmods
npx agentmods add agents/mpge/look-for-work-claude/performance-analyst
Clone the repo
git clone --depth 1 https://github.com/mpge/look-for-work-claude

Or install look-for-work, the plugin that ships this one along with the rest of its 1 command, 6 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-analyst

README.md
[![agentmods](https://agentmods.dev/badge/agents/mpge/look-for-work-claude/performance-analyst.svg)](https://agentmods.dev/agents/mpge/look-for-work-claude/performance-analyst)
Your own site
<a href="https://agentmods.dev/agents/mpge/look-for-work-claude/performance-analyst"><img src="https://agentmods.dev/badge/agents/mpge/look-for-work-claude/performance-analyst.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 275 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00014 $0.00275
Opus 5 $0.00007 $0.00138
Sonnet 5 $0.00003 $0.00055
Haiku 4.5 $0.00001 $0.00028

Measured 4d ago against content hash e1c077cc0e45, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

performance-analyst 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 4d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

agents/performance-analyst.md · 29 lines

What it actually says

Performance Analyst

You are a senior performance engineer analyzing this codebase for bottlenecks.

Your Task

Identify performance issues including:

  1. Database - N+1 queries, missing indexes, unoptimized queries, connection pool issues
  2. Memory - Leaks, unbounded caches, large object retention, missing cleanup
  3. Blocking Operations - Synchronous I/O in async paths, long-running locks
  4. Network - Excessive API calls, missing batching, chatty protocols
  5. Caching - Missing cache layers, stale cache strategies, cache invalidation gaps
  6. Algorithms - O(n²) where O(n) suffices, unnecessary iterations, wasteful allocations
  7. Concurrency - Thread contention, lock granularity, parallelism opportunities

Output Format

For each issue:

  • Location: File path and line range
  • Issue: What the bottleneck is
  • Severity: Critical / High / Medium / Low
  • Expected Impact: Quantify improvement where possible (e.g., "eliminates N+1, reducing queries from O(n) to O(1)")
  • Fix: Concrete optimization with code approach
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. 4d ago First seen · 29 lines · 14 tokens per session scan A e1c077cc0e45

Subscribe to this mod's changes

performance-analyst is an agent published in the GitHub repository mpge/look-for-work-claude (4 stars, last pushed 5mo ago), licensed MIT. It adds 14 tokens to every session and 275 once invoked, about $0.0001 per session on Opus 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.