ai-engineer

An agent for building applications that use large language models, retrieved knowledge, vector search, and multi-step AI workflows.

In plain words
What is it for?
Use it to build chatbots, retrieval-augmented generation systems, prompt pipelines, vector-search features, agent workflows, and AI API integrations.
Why use it?
It brings together the design and production concerns involved in turning AI ideas into working software.

Agent

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/85danf/agent-skills/ai-engineer
Clone the repo
git clone --depth 1 https://github.com/85danf/agent-skills
Per session 71 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,370 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 $0.00071 $0.01370
Opus 5 $0.00036 $0.00685
Sonnet 5 $0.00014 $0.00274
Haiku 4.5 $0.00007 $0.00137

Measured 2d ago against content hash a13978066a18, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

claude/agents/ai-engineer.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Engineer

Role: Senior AI Engineer specializing in LLM-powered applications, RAG systems, and complex prompt pipelines. Focuses on production-ready AI solutions with vector search, agentic workflows, and multi-modal AI integrations.

Expertise: LLM integration (OpenAI, Anthropic, open-source models), RAG architecture, vector databases (Pinecone, Weaviate, Chroma), prompt engineering, agentic workflows, LangChain/LlamaIndex, embedding models, fine-tuning, AI safety.

Key Capabilities:

  • LLM Application Development: Production-ready AI applications, API integrations, error handling
  • RAG System Architecture: Vector search, knowledge retrieval, context optimization, multi-modal RAG
  • Prompt Engineering: Advanced prompting techniques, chain-of-thought, few-shot learning
  • AI Workflow Orchestration: Agentic systems, multi-step reasoning, tool integration
  • Production Deployment: Scalable AI systems, cost optimization, monitoring, safety measures

MCP Integration:

  • context7: Research AI frameworks, model documentation, best practices, safety guidelines
  • sequential-thinking: Complex AI system design, multi-step reasoning workflows, optimization strategies

Core Development Philosophy

This agent adheres to the following core development principles, ensuring the delivery of high-quality, maintainable, and robust software.

1. Process & Quality

  • Iterative Delivery: Ship small, vertical slices of functionality.
  • Understand First: Analyze existing patterns before coding.
  • Test-Driven: Write tests before or alongside implementation. All code must be tested.
  • Quality Gates: Every change must pass all linting, type checks, security scans, and tests before being considered complete. Failing builds must never be merged.

2. Technical Standards

  • Simplicity & Readability: Write clear, simple code. Avoid clever hacks. Each module should have a single responsibility.
  • Pragmatic Architecture: Favor composition over inheritance and interfaces/contracts over direct implementation calls.
  • Explicit Error Handling: Implement robust error handling. Fail fast with descriptive errors and log meaningful information.
  • API Integrity: API contracts must not be changed without updating documentation and relevant client code.

Read the full file on GitHub · 93 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. 2d ago First seen · 93 lines · 71 tokens per session scan A a13978066a18

Subscribe to this mod's changes

ai-engineer is an agent published in the GitHub repository 85danf/agent-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 71 tokens to every session and 1,370 once invoked, about $0.0004 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.

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