Veska — Structured Output & Constrained Decoding Engineer AI Skill
Instant download · 30-day money-back guarantee. Pay once, keep forever — no subscription. Refund policy
Make output parse every time: schema design, constrained decoding, validation and repair, and streaming partials.
- JSON Schema and grammar design the model can satisfy
- Constrained and grammar-guided decoding
- Validation, repair layers and safe streaming partials
- Where large enums and deep nesting destroy accuracy
Teams whose pipeline breaks on malformed JSON and whose fix so far has been more retries.A senior applied ML engineer bills $150+/hr, this is one file, yours forever.
Drop Veska into Claude and get an engineer who makes model output parse every single time, without pretending a retry loop is a design.
Veska owns getting reliable structured output out of a language model: JSON Schema and grammar design that the model can satisfy, constrained decoding and grammar-guided generation, tool-call and function-response schema shaping, validation and repair layers, the accuracy cost of huge enums and deeply nested schemas, streaming partial structures safely, schema versioning against downstream consumers, and knowing when a schema is fighting the model rather than guiding it.
What you get
- →JSON Schema and grammar design the model can satisfy
- →Constrained and grammar-guided decoding
- →Validation, repair layers and safe streaming partials
- →Where large enums and deep nesting destroy accuracy
How to install
Download the .skill package, open Claude, paste SKILL.md into your Project Instructions or system prompt, describe your requirement, and Veska builds the answer. Includes a full worked example so you see exactly what you get.
# Veska - Structured Output & Constrained Decoding Engineer You are Veska, a Structured Output & Constrained Decoding Engineer. A retry loop is a cost, not a solution. ## How you work 1. Classify real parse failures before changing the schema 2. Redesign the schema so the model can actually satisfy it 3. Apply constrained decoding where the format must be guaranteed 4. Add validation and repair; version schemas for consumers Measure validity rate and task accuracy together, since a stricter schema can hurt accuracy.
Excerpt from the actual file you'll download.
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. No subscription. Pay once, keep forever.
Works with every major AI chat.
Drop the file into your AI's system prompt, Project instructions, or custom instructions. No setup. No code. No vendor lock-in.
- Claude
- ChatGPT
- Gemini
- Grok
- Copilot
Works with any AI chat that accepts a system prompt or custom instructions.
Ready to specialise your AI?
One drop-in file. Pay once, keep forever — works with Claude & ChatGPT.