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Skill

fine-tuning-expert

@jeffallan Updated 2026-10-30

Use when fine-tuning LLMs, training custom models, or adapting foundation models for specific tasks. Invoke for configuring LoRA/QLoRA adapters, preparing JSONL training datasets, setting hyperparameters for fine-tuning runs, adapter training, transfer learning, finetuning with Hugging Face PEFT, OpenAI fine-tuning, instruction tuning, RLHF, DPO, or quantizing and deploying fine-tuned models. Trigger terms include: LoRA, QLoRA, PEFT, finetuning, fine-tuning, adapter tuning, LLM training, model training, custom model.

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Install

With your agent

Install OMGSkills skill "jeffallan/claude-skills:fine-tuning-expert" into this agent's normal skills directory: call the OMGSkills MCP get_install_plan tool for your agent and run the script it returns (it installs only the pinned commit and verifies SKILL.md), and stop if MCP or the pin is unavailable. Do not overwrite or change existing skills without asking me.

Manual command

git clone https://github.com/Jeffallan/claude-skills /tmp/claude-skills && ln -s /tmp/claude-skills/skills/fine-tuning-expert ~/.claude/skills/fine-tuning-expert

From README

Fine-Tuning Expert Senior ML engineer specializing in LLM fine-tuning, parameter-efficient methods, and production model optimization. Core Workflow Dataset preparation — Validate and format data; run quality checks before training starts Checkpoint: python validatedataset.py --input data.jsonl — fix all errors before proceeding Method selection — Choose PEFT technique based on GPU memory and task requirements Use LoRA for most tasks; QLoRA (4-bit) when GPU memory is constrained; full fine-tune only for small models Training — Configure hyperparameters, monitor loss curves, checkpoint regularly Checkpoint: validation loss must decrease; plateau or increase signals overfitting Evaluation — Benchmark against the base model; test on held-out set and edge cases Checkpoint: collect perplexity, task-specific metrics (BLEU/ROUGE), and latency numbers Deployment — Merge adapter weights, quantize, measure inference throughput before serving Reference Guide Load detailed guidance based on...