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For Claude, ChatGPT & Claude Code

AI reads your instructions,
not your mind.

Build prompts, agents, and skills in ParetoStudio — in the visual editor or from your terminal. The format does the quality work; you keep control of every detail.

Start building — freeSee how it works
01Quality by constructionThe format won't let you ship a vague one.
02You keep controlRole, rules, guardrails, tools — the details a chat hides.
03Everywhere you workBrowser via the extension, editor via MCP. One library.
paretostudio.io/prompt-builder

104 roles researched · 19 MCP tools · 6 AI platforms

Works with

Claude
Claude Code
Cursor
ChatGPT
Gemini
Grok
DeepSeek
Perplexity
The problem

Good AI output comes from a few things, done right.

Type a wish into the box and you get a coin flip — sometimes sharp, often vague, and hard to tell why. The few things that decide quality — who the AI is, the real context, the exact task, the hard constraints — are exactly the ones easy to skip. ParetoStudio's format won't let you skip them.

What most people do

Write me an API endpoint that handles user authentication with JWT tokens and refresh tokens. Make it secure and follow best practices. Also add rate limiting and input validation. Use TypeScript.

No role. No context. No structure. Then rephrase three times.
What ParetoStudio builds
<role>
Senior Backend Engineer specializing in
authentication systems and API security
</role>
<context>
Node.js + Express, PostgreSQL, existing
user model with email/password fields...
</context>
<task>
Write a JWT auth endpoint with refresh
token rotation, rate limiting (100 req/15m)...
</task>
Role. Context. Task. Thinking. Format. Instructions.
Two ways to work

Pick the surface you already work in.

One library behind both. You pick where you live — it shows up there.

In the browser

The prompter

You live in ChatGPT, Claude, or Gemini and prompt all day.

You build
Prompts in the Prompt Builder — one structured prompt per task, in the format your model reads best.
It lands
The Chrome extension drops the prompt into the chat with one click. No copy-paste, no lost tabs.
Prompt Builder + extensionFreeStart with a prompt

In your editor

The builder

You live in Claude Code, Cursor, or Codex and ship with AI.

You build
Agents (a persistent identity) and skills (a reusable capability) — in the visual builders or created right from your CLI through MCP, with the tools, rules, and guardrails spelled out.
It lands
MCP installs them into your editor as real agent.md and SKILL.md files that run natively.
Agent & Skill builders + MCPProExplore the builders
The editor

Build it fast. Control what it actually does.

Build in the visual editor or from your CLI — either way the format does the quality work, and you set the role, the rules, the guardrails, the tools. The details a chat buries are the ones you control here.

PROMPT BUILDER

Not a blank textbox. A wizard that knows your role.

Select Backend Engineer and the wizard suggests 'Write a New API Endpoint,' 'Debug a Production Error,' 'Review a Backend PR.' 104 roles, 1,560 task suggestions. Not templates — researched starting points for your profession.

Start building prompts
Prompt Builder role preset dropdown showing Backend, Frontend, Full-Stack, and Mobile Engineer options
Prompt Builder context setting step with background information field
Prompt Builder task specification step with clear objectives
Prompt Builder thinking steps with ordered reasoning stages
Prompt Builder response format step with quick format options and constraints
Prompt Builder final instructions with configuration summary

Click to zoom

Agent Builder identity step with name, role presets, and voice style
Agent Builder when-to-use step with delegation brief and proactive toggle
Agent Builder capabilities step with tool allowlist, model, and MCP servers
Agent Builder behavioral rules with Always and Never rule presets
Agent Builder verification step with the checks the agent runs before reporting

Click to zoom

AGENT BUILDER

Define how your AI behaves — every time.

A vague system prompt behaves differently every run. Pin it down: identity, when to use it, tools, model and MCP servers, always/never rules, and how it verifies its work. Five steps that produce a real agent.md you can install and rely on.

Start defining agents

SKILL BUILDER

Teach your AI a capability it actually uses.

A loose instruction gets ignored or misfires. A skill makes it concrete: triggers that decide when it activates, guardrails for what it can and can't touch, and the tools it's allowed to use. Four steps that turn a note into a deployable skill with real boundaries.

Start creating skills
Skill Builder identity step with name and category
Skill Builder trigger step with a hero description, example trigger phrases, and a quality badge
Skill Builder instructions step with guided numbered execution steps
Skill Builder guardrails with constraints and allowed tools grid

Click to zoom

Library with 18 sidebar categories, grid view showing prompt cards, and Prompts/Agents/Skills tabs
Library agents tab showing Investment Analyst, API Integration Engineer, and Backend API Engineer cards
Library skills tab showing skill cards with trigger counts and tool permissions

Click to zoom

YOUR LIBRARY

One library. The single source of truth.

Every prompt, agent, and skill — saved, searchable, categorized. 18 professional categories in the sidebar. Full-text search across everything. After 50 prompts, rebuilding from scratch would take weeks. That's not lock-in — it's compound interest.

Explore the library

1,560 task starting points across 104 roles

Built once, used live

One click in the browser. One command in your editor.

Same library behind both. A prompt drops into your chat from the extension; an agent or skill installs into your editor through MCP — a real file that runs natively. This is the part most tools stop short of.

In the browserAvailable now
claude.ai
PS

Inserted from your library

"You are a senior backend engineer specializing in distributed systems. Your task is to review this API for reliability..."

Open the extension in any AI chat and click Insert — your prompt drops into the message box. No copy-paste, no tab switching.

ChatGPT
Claude
Gemini
Grok
DeepSeek
Perplexity
In your codeAvailable now
$ npx paretostudio-mcp
✓ Connected to ParetoStudio
Available tools (19):
list_prompts search_prompts get_prompt
list_agents search_agents get_agent
list_skills search_skills get_skill
install_skill install_agent install_bundle
create_prompt create_skill create_agent
update_skill update_agent
delete_agent delete_skill
$

Install an agent or skill and it lands in your editor as a real file — .claude/agents/*.md, .claude/skills/*/SKILL.md — and runs natively. 19 MCP tools, no walled garden.

Claude Code
Cursor
Any MCP client
Why it pays off

Your AI work stops evaporating.

Every prompt, agent, and skill you build is saved, searchable, and ready to reuse. The blank-page tax disappears. Six months in, you're not starting over — you're standing on everything you've already figured out.

Pricing

Start free. Grow when ready.

No credit card required. Prompts, agents, and skills are free to build — upgrade when your library grows.

Free

€0

forever

  • 5 saved prompts
  • 2 agents + 2 skills
  • MCP server (50 requests/day)
  • Chrome extension
  • Full library — tags, search, filters

Build real prompts, agents, and skills. See if the structure makes a difference.

Start free
Most popular

Pro

€12/month

per month

  • Unlimited prompts, agents & skills
  • MCP server (500 requests/day)
  • All export formats
  • Priority support

Your library outgrew the free caps. Unlock unlimited everything + MCP at 500 requests/day.

Get Pro

Team

€9/seat

per month · min 3 seats

  • Everything in Pro
  • Shared team library
  • Centralized billing
  • Minimum 3 seats

Share one library across the team, with everything in Pro for each seat.

Get Team

Build one thing right. Watch where it shows up.

Start with a single prompt — free. Add agents and skills when you're ready.

Start building — freeSee plans
ParetoStudio

Build prompts that work. Define agents that behave. Deploy skills that ship. Keep your best AI work forever.

Builders

  • Prompt Builder
  • Agent Builder
  • Skill Builder
  • My Library

Resources

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  • Refund Policy

Get Started

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