Thibaut - Synthetic Data Engineer AI Skill
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Thibaut - Synthetic Data Engineer AI Skill
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// skill previewthibaut-eval-dataset-synthetic-data-engineer.md
# Thibaut - Eval Dataset & Synthetic Data Engineer
## Who Thibaut Is
Drop Thibaut into Claude and get a Senior Eval Dataset & Synthetic Data
Engineer whose central claim is that most teams have an evaluation problem
that is really a dataset problem. Their harness is fine, their judge prompt is
reasonable, their CI gate is wired up correctly, and their eval set is forty
cases someone wrote in an afternoon that all look like the happy path. That
set will report 94 percent forever, it will not move when the system gets
worse, and it will be cited in the postmortem. Thibaut's position is that a
dataset is an engineered artifact with a stated sampling frame, a documented
label definition, a measured agreement rate, a contamination check, and a
refresh schedule, and that a number produced by anything less is not a
measurement, it is a vibe with a decimal point.
Thibaut covers the entire data side of evaluation and training: sampling frame
Preview: lines 23 to 30 of 268 · Full file after purchase
or included in Unlimited Access
Use the name
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on
You are Thibaut, a Senior Eval Dataset and Synthetic Data Engineer who writes the sampling frame first and generates synthetic cases against an attribute grid. You have been activated to build a golden set with measured agreement and a contamination check.
$4.92/mo, billed yearly. Works in Claude, ChatGPT, Claude Code, Codex and Cursor. Cancel anytime, 14-day refund on the first charge. After checkout we email your setup link.
Complete skill package instant downloadthibaut-eval-dataset-synthetic-data-engineer.md
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Ask Thibaut something hard.
Our eval scores are 94% but users complain constantly. Rebuild our eval dataset so it actually predicts production.
CLAUDE · AS THIBAUT, SYNTHETIC DATA ENGINEER
Thibaut returns a gap analysis between the current eval set and production traffic, a stratified resampling plan by failure mode, annotation guidelines with a measured agreement score, a synthetic-generation run including a batch that fails its own noise gate and how it was fixed, and a contamination check with results.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// what's inside
What's inside this skill
- Representative held-out sampling and failure-mode stratification
- Annotation guidelines and inter-annotator agreement
- Synthetic generation with diversity and label-noise gates
- Contamination checks, versioning and golden-set upkeep
Teams whose eval scores look great but do not predict production behavior at all.
What you're actually buying
Drop Thibaut into Claude and get a data engineer who builds the eval set your scores are only as trustworthy as.
Thibaut builds and curates the datasets underneath every eval and every fine-tune: sampling a held-out set that actually represents production traffic, stratifying by the failure modes you care about, annotation guidelines and inter-annotator agreement, synthetic data generation with diversity and label-noise gates, contamination and leakage checks between train and eval, dataset versioning and provenance, golden-set maintenance as the product changes, and knowing when a synthetic batch should be thrown away rather than shipped.
What you get
- →Representative held-out sampling and failure-mode stratification
- →Annotation guidelines and inter-annotator agreement
- →Synthetic generation with diversity and label-noise gates
- →Contamination checks, versioning and golden-set upkeep
📄 thibaut-eval-dataset-synthetic-data-engineer.skill
Under 2 min install
Works with Claude, ChatGPT & any AI chat
How to install
Download the .skill package, open Claude, paste SKILL.md into your Project Instructions or system prompt, describe your requirement, and Thibaut builds the answer. Includes a full worked example so you see exactly what you get.
// how to install
Under 2 minutes
Four steps. Any AI chat.
- 01Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
- 02Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
- 03Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
- 04Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Unlimited there is nothing to download. Connect your AI once, then just ask: "Load Thibaut from KissMySkills."
// faq
Questions about this product
What does the Thibaut skill do?+
Build trustworthy eval and training data: representative sampling, annotation quality, synthetic generation with real gates. Load it once into Claude Projects and you get a configured Eval Dataset & Synthetic Data Engineer without re-explaining context at the start of every session. Validate changes against a held-out eval set and real production traces before rolling out to all traffic.
How do I install this skill file?+
Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.
Which AI tools does this skill work with?+
Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.
What is included in this download?+
One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. Pay once, keep forever, yours permanently.
How is this different from using Claude without the Thibaut skill?+
Without a skill file your AI starts every session as a general assistant. With Thibaut loaded it applies Eval Dataset & Synthetic Data Engineer methodology from the first message, with consistent quality every time. Validate changes against a held-out eval set and real production traces before rolling out to all traffic.
Do I have to read it myself?+
No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.