Prompt and context engineering workbench
Context engineering for AI agents. Architect every file they read.
Describe your project once. PromptArch generates CLAUDE.md, AGENTS.md, Cursor rules, Copilot instructions and 18 artifact types, lints them against size budgets, and scores every prompt. In the browser, from the CLI, or over MCP.
Goal: Add per-user rate limiting to the /api/build route
You are an expert Software Development assistant…
- No signup for your first prompt
- 18 artifact types
- 11 prompt domains
- CLI and MCP server
- Linter is free and offline
- prompts and artifacts generated
- 210+
- builders
- 140+
Everything a context engineer ships
One workbench, every surface your agents read
Context Studio
One brief in. CLAUDE.md, AGENTS.md, Cursor rules and Copilot instructions out, each inside its size budget.
Artifact Linter
Deterministic rules plus a semantic score. Free, offline, CI exit codes.
OpenPrompt Enhancer
Paste a rough prompt, answer three questions, get a stronger one.
OpenCLI and MCP
promptarch lint and promptarch init in your terminal. The MCP server lints for free from Claude Code, Cursor or any client.
OpenTeams and Standards
Pooled credits, shared libraries, and reusable standards every prompt inherits.
OpenAgent Configs
Curated CLAUDE.md, Cursor and Copilot configs you can open in Studio.
OpenFrom your terminal
Ships where you work.
Lint and generate context files, and enhance any prompt, without leaving your editor, terminal, or agent.
npm install -g promptarchWorks with Claude Code, Cursor, Windsurf, and any MCP client.
$ npm i -g promptarch
$ promptarch lint CLAUDE.md
CLAUDE.md B+ · 78/100
⚠ missing commands table
$ promptarch init
✓ CLAUDE.md
✓ AGENTS.md
✓ .cursor/rules/core.mdc
$ promptarch enhance "write a launch email"
(1/3) Who is the audience? › existing customers
✓ Enhanced. Credits used: 5.
{ "mcpServers": { "promptarch": {
"url": "https://mcp.promptarch.ai/mcp",
"headers": { "Authorization":
"Bearer pk_…" } } } }
tools:
promptarch_lint_artifact FREE
promptarch_generate_artifact pk_ key
promptarch_enhance_prompt pk_ key
promptarch_list_artifact_types
How it works
Three steps to a stronger prompt
- 01
Answer domain-specific questions
PromptArch guides you through intent, context, and constraints instead of dropping you into an empty text box.
- 02
Generate an optimized prompt
The builder turns your structured inputs into a stronger prompt tailored to the AI model you plan to use.
- 03
Score, save, and reuse
See a quality breakdown, store winning prompts in your library, and refine them over time.
Prompt Builder
Scored prompts for every workflow
Every domain ships with best-practice defaults baked in. Pick one and the wizard scores your prompt as you build.
Frequently asked questions
What is context engineering?
Context engineering is the practice of designing the instructions, files, and constraints that guide AI agents, like CLAUDE.md, AGENTS.md, and Cursor rules. PromptArch is a workbench for building them.
Do I need an account to try it?
No. You can generate one prompt free with no signup. Create an account to save, copy, share, and generate more.
Which AI models and tools does PromptArch support?
PromptArch generates prompts and dev-tooling artifacts for Claude, GPT, Cursor, Windsurf, GitHub Copilot, and more, with output tuned per target.
Is there a CLI?
Yes. Run `npm install -g promptarch` to get `promptarch lint` (free, offline, CI-friendly exit codes) and `promptarch init`, which scans your repo and generates CLAUDE.md, AGENTS.md, Cursor rules, and Copilot instructions.
Can my AI agent use PromptArch over MCP?
Yes. The promptarch-mcp server speaks Streamable HTTP. Point Claude Code, Cursor, or any MCP client at it to lint artifacts for free, or generate them with an API key.
Ship context your agents can actually use
Your first prompt is free, no card needed. Teams get pooled credits and shared standards.