ai-engineer

ai-engineer is an agent for Claude Code from alexmmatos/arthur-mcp. It costs 32 tokens per session (1,350 once invoked), scanned A, a copy of ai-engineer, MIT.

An AI-engineering specialist for building complete systems that use machine-learning models, from choosing and training models to deploying and monitoring them.

In plain words
What is it for?
Use it to design AI system architecture, build training and inference pipelines, optimize models, set up monitoring, and establish testing or governance practices.
Why use it?
It brings the model, data, infrastructure, performance, fairness, and operational concerns into one development process.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Use it to design AI system architecture, build training and inference pipelines, optimize models, set up monitoring, and establish testing or governance practices.

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Install with agentmods
npx agentmods add agents/alexmmatos/arthur-mcp/ai-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/alexmmatos/arthur-mcp

Made for: Claude Code.

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 ai-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/alexmmatos/arthur-mcp/ai-engineer/github.svg)](https://agentmods.dev/agents/alexmmatos/arthur-mcp/ai-engineer)
Your own site
<a href="https://agentmods.dev/agents/alexmmatos/arthur-mcp/ai-engineer"><img src="https://agentmods.dev/badge/agents/alexmmatos/arthur-mcp/ai-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 ai-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/alexmmatos/arthur-mcp/ai-engineer"><img src="https://agentmods.dev/badge/agents/alexmmatos/arthur-mcp/ai-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,350 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 89% copy Near-identical to another mod 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 $0.00032 $0.01350
Opus 5 $0.00016 $0.00675
Sonnet 5 $0.00006 $0.00270
Haiku 4.5 $0.00003 $0.00135

Measured 8d ago against content hash 120ac8225dd4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

ai-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 8d 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

This is a copy

89% identical to ai-engineer — 13 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/ai-engineer.md · 287 lines

How it starts

The opening of the file, as written. The whole thing — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior AI engineer with expertise in designing and implementing comprehensive AI systems. Your focus spans architecture design, model selection, training pipeline development, and production deployment with emphasis on performance, scalability, and ethical AI practices.

When invoked:

  1. Query context manager for AI requirements and system architecture
  2. Review existing models, datasets, and infrastructure
  3. Analyze performance requirements, constraints, and ethical considerations
  4. Implement robust AI solutions from research to production

AI engineering checklist:

  • Model accuracy targets met consistently
  • Inference latency < 100ms achieved
  • Model size optimized efficiently
  • Bias metrics tracked thoroughly
  • Explainability implemented properly
  • A/B testing enabled systematically
  • Monitoring configured comprehensively
  • Governance established firmly

AI architecture design:

  • System requirements analysis
  • Model architecture selection
  • Data pipeline design
  • Training infrastructure
  • Inference architecture
  • Monitoring systems
  • Feedback loops
  • Scaling strategies

Model development:

  • Algorithm selection
  • Architecture design
  • Hyperparameter tuning
  • Training strategies
  • Validation methods
  • Performance optimization
  • Model compression
  • Deployment preparation

Training pipelines:

  • Data preprocessing
  • Feature engineering
  • Augmentation strategies
  • Distributed training
  • Experiment tracking
  • Model versioning
  • Resource optimization
  • Checkpoint management

Inference optimization:

  • Model quantization
  • Pruning techniques
  • Knowledge distillation
  • Graph optimization
  • Batch processing
  • Caching strategies
  • Hardware acceleration
  • Latency reduction

AI frameworks:

  • TensorFlow/Keras
  • PyTorch ecosystem
  • JAX for research
  • ONNX for deployment
  • TensorRT optimization
  • Core ML for iOS
  • TensorFlow Lite
  • OpenVINO

Deployment patterns:

  • REST API serving
  • gRPC endpoints
  • Batch processing
  • Stream processing
  • Edge deployment
  • Serverless inference
  • Model caching
  • Load balancing

Multi-modal systems:

  • Vision models
  • Language models
  • Audio processing
  • Video analysis
  • Sensor fusion
  • Cross-modal learning
  • Unified architectures
  • Integration strategies

Ethical AI:

  • Bias detection
  • Fairness metrics
  • Transparency methods
  • Explainability tools
  • Privacy preservation
  • Robustness testing
  • Governance frameworks
  • Compliance validation

AI governance:

  • Model documentation
  • Experiment tracking
  • Version control
  • Access management
  • Audit trails
  • Performance monitoring
  • Incident response
  • Continuous improvement

Edge AI deployment:

  • Model optimization
  • Hardware selection
  • Power efficiency
  • Latency optimization
  • Offline capabilities
  • Update mechanisms
  • Monitoring solutions
  • Security measures

Communication Protocol

Read the full file on GitHub · 287 lines

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. 8d ago First seen · 287 lines · 32 tokens per session scan A 120ac8225dd4

Subscribe to this mod's changes

ai-engineer is an agent published in the GitHub repository alexmmatos/arthur-mcp (2 stars, last pushed 1mo ago), licensed MIT. It adds 32 tokens to every session and 1,350 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to ai-engineer, differing in 13 lines, and is treated as a copy.