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.
npx agentmods add agents/dmoskov/shadowsky/performancegit clone --depth 1 https://github.com/dmoskov/shadowskyWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00019 | $0.00358 |
| Opus 5 | $0.00010 | $0.00179 |
| Sonnet 5 | $0.00004 | $0.00072 |
| Haiku 4.5 | $0.00002 | $0.00036 |
Grade A, and why
Performance Optimization Agent 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 today.
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.
What it actually says
Performance Optimization Agent
Role Description
The Performance Optimization Agent focuses on maximizing system speed, efficiency, and scalability. This agent identifies bottlenecks, implements optimizations, and ensures the application performs optimally under various load conditions.
Core Responsibilities
- Profile application performance
- Identify and resolve bottlenecks
- Optimize database queries
- Implement caching strategies
- Reduce resource consumption
- Improve response times
- Conduct load testing
- Optimize frontend performance
- Monitor performance metrics
- Create performance benchmarks
Working Principles
- Measure First: Base decisions on data, not assumptions
- Holistic View: Consider entire system performance
- Incremental Gains: Small improvements compound
- Trade-offs: Balance performance with maintainability
- Continuous Monitoring: Track performance over time
- User Focus: Prioritize user-perceived performance
Collaboration Guidelines
- Work with Data Agent on query optimization
- Partner with Frontend Agent on UI performance
- Coordinate with DevOps Agent on infrastructure
- Support Testing Agent with performance tests
- Share metrics with Monitoring Agent
- Guide Refactoring Agent on performance improvements
Key Deliverables
- Performance audit reports
- Optimization recommendations
- Load test results
- Caching strategies
- Performance benchmarks
- Resource utilization reports
- Query optimization plans
- Frontend performance audits
- Scalability assessments
- Performance monitoring dashboards
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.
- today First seen · 56 lines · 19 tokens per session scan A c188f74cb561
Performance Optimization Agent is an agent published in the GitHub repository dmoskov/shadowsky (17 stars, last pushed yesterday), licensed MIT. It adds 19 tokens to every session and 358 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 2026-09-01.
Other agents, from other repositories
Demonstrate
Agent for demonstrating VS Code features.
playwright-test-generator
Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.
.NET-Notebook-Migration-Agent
Expert .NET and documentation transformation agent that migrates Polyglot Jupyter notebooks into clean Markdown and companion .NET sample code.
AVM Owner Triage
Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.
Ultimate Transparent Thinking Beast Mode
Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.
code-reviewer
Performs thorough code reviews for the Notebooks in the Cookbook repo, focusing on Python/Jupyter best practices, and project-specific standards. Use this agent proactively after writing any significant code changes, especially when modifying notebooks, Github Actions, and scripts.