What does a structured prompt pin down?

The schema and its field names, the type of each value, what to emit when a value is unknown, and whether any prose is allowed around the payload. That last one is what usually breaks an integration: a valid object wrapped in a sentence of explanation is not parseable.

Is JSON the only shape covered?

No. The same path covers markdown, tables, lists and code — anything where the format is the requirement rather than a preference. The prompt declares the target format outright instead of leaving the model to infer it from the request.

Do they include an example of the output?

The structured path asks for one worked instance of the schema alongside the field list, because a list of fields with no instance beside it is where models start improvising key names.

All prompts

Structured output prompts

Prompts that pin down the shape of the answer, not just its subject.

When output feeds something else — a spreadsheet, a parser, a document template — the format is the requirement. These prompts declare the schema, the field types, what to emit when a value is unknown, and whether prose is allowed around the payload at all. That last one is what usually breaks an integration.

3 prompts published

Promptstructured

Meeting Notes to Decision Record — GitHub-Ready ADR

Turns raw meeting notes into an Architecture Decision Record that drops straight into a GitHub docs page without a heading clash. Starts at H2 since the page already owns the H1, and covers the decision, the rejected options and why, follow-up owners, and revisit triggers. Unassigned actions get flagged, not invented.

25 0 0by Andrei Badulescu

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Promptstructured

Project Management Tool Comparison — Scored JSON Matrix

Compares five project management tools for a 12-person agency that bills hourly, and returns a JSON matrix rather than prose. Each entry carries plan tier, per-seat and 12-seat cost, time tracking, guest-seat rules, API depth and a 1-5 migration-pain score. Ends on one declared winner.

25 0 0by Andrei Badulescu

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Promptstructured

Support Email to CRM Record — Fixed-Schema JSON

Turns any inbound support email into a CRM-ready JSON object with the same six keys every time, so a missing detail never breaks the API call. Absent values come back as null — never an omitted key or a placeholder string. Swap the key names for your own CRM schema.

22 0 0by Andrei Badulescu

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Guides on structured output prompts

Prompts That Return Valid JSON

Getting JSON out of a model is easy; getting JSON a parser accepts every time is not. The five failures that break the parse, and the wording that closes each one.

Prompts That Return Clean Markdown

Markdown is the shape for a human reader, which makes it the easiest to get wrong: heading depth that fights the host page, wrapper fences, and structure applied to prose that had none.

Output Format Mastery: JSON, Tables & Parseable Results

Use the structured use case and its six output shapes to get reliable, machine-parseable results you can pipe straight into the next tool.

Prompts That Return Usable Tables

A table is a promise that every row answers the same questions. Column contracts, units, empty cells, and the point at which you should have asked for CSV instead.

Questions about structured output prompts

What does a structured prompt pin down?: The schema and its field names, the type of each value, what to emit when a value is unknown, and whether any prose is allowed around the payload. That last one is what usually breaks an integration: a valid object wrapped in a sentence of explanation is not parseable.
Is JSON the only shape covered?: No. The same path covers markdown, tables, lists and code — anything where the format is the requirement rather than a preference. The prompt declares the target format outright instead of leaving the model to infer it from the request.
Do they include an example of the output?: The structured path asks for one worked instance of the schema alongside the field list, because a list of fields with no instance beside it is where models start improvising key names.