WorkspaceAI & Prompt EngineeringClient-Side Sandbox

System Prompt Builder

Construct production `systemInstruction` definitions with persona boundaries, tool-use rules, JSON output schemas, and refusal guardrails.

Input Buffer

4 ln · 208 ch · 208 B

ENCODING: UTF-8AUTO-RUN: ENABLED

Output Buffer

OUT: 1 LN · 0 B⌘↵ RUN · ⌘⇧C COPY

How to Use System Prompt Builder

Specify Persona, Tone, Output Contract, and Guardrails to compile a clean XML/Markdown-tagged system instruction.

Run / Process tool outputCtrl + Enter

Copy primary output to clipboardCtrl + Shift + C

Open global command paletteCtrl + K

Build structured CO-STAR / RISEN prompts (Role, Context, Objective, Constraints, Output Format) locally or enhance with server-side Gemini.

Transform vague one-line prompts into unambiguous, constraint-driven instructions with explicit evaluation criteria.

Wrap complex code snippets into a structured prompt requesting time/space complexity (Big-O), data flow trace, and edge-case analysis.

Combine error stack traces, reproduction steps, and source code into a root-cause analysis prompt.

Generate a staff-level PR review prompt focusing on concurrency hazards, security vulnerabilities (XSS/SQLi/SSRF), type safety, and maintainability.

Create a comprehensive prompt from your `package.json` or file tree to generate developer documentation.