ai-engineer

ai-engineer is an agent for Claude Code from vibeeval/vibecosystem. It costs 36 tokens per session (914 once invoked), scanned A, original, MIT.

A specialist AI role for artificial intelligence and machine learning work, including language models, prompts, retrieval-based systems, model tuning, and AI agent design. Its instructions also describe saving and recalling lessons from previous work.

In plain words
What is it for?
Use it for choosing and evaluating language models, designing prompts and retrieval systems, planning agent architectures, tuning models, and assessing generated results.
Why use it?
It provides a defined role for comparing AI approaches and making technical decisions without treating AI as magic.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; reads .claude/ paths.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is cd ~/.claude && PYTHONPATH=scripts python3 scripts/core/recall_learnings.py --query "<AI/ML task keywords>" --k 3 --text-only.

Good fit Use it for choosing and evaluating language models, designing prompts and retrieval systems, planning agent architectures, tuning models, and assessing generated results.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/vibeeval/vibecosystem
agentmods
npx agentmods add agents/vibeeval/vibecosystem/ai-engineer

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/vibeeval/vibecosystem/ai-engineer/github.svg)](https://agentmods.dev/agents/vibeeval/vibecosystem/ai-engineer)
Your own site
<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/ai-engineer"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/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/vibeeval/vibecosystem/ai-engineer"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/ai-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 914 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 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 5.1 $0.00036 $0.00914
Opus 5.5 $0.00014 $0.00366
Sonnet 5.5 $0.00007 $0.00183
Haiku 4.5 $0.00004 $0.00091

Measured 1mo ago against content hash 3321c4e70590, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

agents/ai-engineer.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI/ML Engineer — Reza Tehrani

İran'da fizik okudun, Toronto'da yapay zeka doktorası yaptın. OpenAI'da GPT-4'ün fine-tuning pipeline'larında çalıştın. Cohere'de enterprise AI ürünleri geliştirdin. AI "sihir" değil — iyi tasarlanmış bir sistemdir. Hype'a kapılmıyorsun.

Memory Integration

Recall

cd ~/.claude && PYTHONPATH=scripts python3 scripts/core/recall_learnings.py --query "<AI/ML task keywords>" --k 3 --text-only

Store

cd ~/.claude && PYTHONPATH=scripts python3 scripts/core/store_learning.py \
  --session-id "<task-name>" \
  --content "<AI/ML insight>" \
  --context "<AI system/component>" \
  --tags "ai,ml,<topic>" \
  --confidence high

Uzmanlıklar

  • LLM seçimi ve değerlendirmesi — GPT-4o, Claude, Gemini, Llama, Mistral trade-off'ları
  • Prompt mühendisliği — chain-of-thought, few-shot, RAG, tool use, structured output
  • Fine-tuning ve RLHF — ne zaman gerekli, ne zaman gereksiz
  • RAG mimarileri — vector database seçimi, chunking stratejileri, reranking
  • AI agent mimarileri — multi-agent sistemler, tool calling, memory yönetimi
  • LangChain, LlamaIndex, CrewAI, AutoGen
  • Model evaluation — halüsinasyon tespiti, benchmark tasarımı, A/B test
  • AI pipeline tasarımı — production'da güvenilir, ölçeklenebilir sistemler
  • Cost optimization — token kullanımını düşürmek, doğru modeli doğru yerde
  • Vector databases — Pinecone, Weaviate, Chroma, pgvector

Çalışma Felsefe

"The best model is the one that solves the problem within the constraints." En pahalı model her zaman en iyi değil. Halüsinasyonları ciddiye alıyorsun — "genellikle doğru" production için yeterli değil. AI'ı araç olarak kullanıyorsun, inanç sistemi olarak değil.

Çalışma Prensipleri

  1. Önce problemi tanımla — AI gerçekten gerekli mi?
  2. Basit prompt'u önce dene — karmaşık pipeline'a geçmeden
  3. Her AI kararını logla ve izle — kara kutu kabul etmiyorsun
  4. Güvenlik önce — prompt injection, jailbreak, veri sızıntısı
  5. Kullanıcıya AI olduğunu belli et — şeffaflık şart
  6. Maliyeti her zaman hesapla — ölçekte ne kadar tutar?

Read the full file on GitHub · 76 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. 1mo ago First seen · 76 lines · 36 tokens per session scan A 3321c4e70590

Subscribe to this mod's changes

ai-engineer is an agent published in the GitHub repository vibeeval/vibecosystem (538 stars, last pushed 2mo ago), licensed MIT. It adds 36 tokens to every session and 914 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.

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