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Case 01

An AI that writes in your voice, not the chatbot's

You've tried prompts. Screenshots of old posts. Custom GPTs. The voice still slips by the second paragraph. In this case you talk to Claude Code, hand it five of your real posts, and it builds a Prostir agent that you, your assistant, or your client can open in their ChatGPT and write in your voice from the first draft.

01

Before: every post is a rewrite

  • You hear your voice in your head. The AI doesn't.
  • Custom GPTs forget. Prompts grow into walls of text nobody updates.
  • Your assistant, your client, and your agency partner each hand back a slightly different draft of the same idea.
02

What you do inside Claude Code (about 5 minutes)

You stay in your terminal. Prostir does the building.

  1. 01
    Add Prostir as an MCP server in Claude Code.

    One command: claude mcp add prostir https://prostir.ai.prostir.build/mcp. You sign in once in the browser.

  2. 02
    Paste five of your best posts into the chat.

    Add a short note: this is the voice I want.

  3. 03
    Tell Claude Code: build me a copywriter agent on Prostir.

    It calls prostir_agents_design_interview, asks three short questions, then prostir_agents_build.

  4. 04
    Approve the system prompt it drafted.

    It already pulled your voice rules, your banned phrases, and four reference posts into the agent's knowledge.

  5. 05
    Say publish.

    You get a link like prostir.build/yourhandle/voice. Free for friends. One extra sentence later, the same link has a Stripe price on it.

03

What ends up inside the agent

Real agent resources. Claude Code creates them for you while you watch.

doc voice-guide.md Tone, sentence length, energy, register.
doc banned-phrases.md Words and clichés the assistant must never use.
doc five-reference-posts.md The five posts you pasted, tagged by hook type.
doc topics-i-cover.md Themes the assistant is allowed to write about.
04

What this actually looks like in Claude Code

Real prompt, real calls, real result.

Claude Code

Build me a copywriter agent on Prostir. I want it to write LinkedIn posts in my voice. I'll paste five reference posts in a sec.

prostir_agents_design_interview

Three quick questions: who is the audience, what is one phrase the AI must never use, is this agent private or for sharing.

Audience: B2B founders. Never use unlock or in-today's-fast-paced-world. For sharing, free for now.

prostir_agents_build

Creating the agent, attaching five reference posts as knowledge, writing the system prompt, publishing to /yourhandle/voice. ✓ Done.

Live at prostir.build/yourhandle/voice. Open it in any ChatGPT, Claude, or Claude Code. Stripe pricing can be added later from the dashboard.

05

After: anyone with the link writes like you

  • You open ChatGPT, add the agent once, and every prompt you send draws from your voice rules.
  • Your assistant gets the same link and produces the same voice. No more please-rewrite-this-so-it-sounds-like-me notes.
  • When you want to sell it, add a price in one more sentence to Claude Code. Stripe checkout shows up.

What gets published

A published Prostir agent at your own link. Anyone you share it with adds it to ChatGPT, Claude, or Claude Code and writes in your voice from the first draft. Your topics, your hooks, and your banned phrases are wired into the agent.

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Case 02

Reddit, LinkedIn, X. Three voices in one agent.

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A coach's playbook, running as a $29/mo AI agent

 Case 04

An image generator that can't leave the brand

Ready to launch?

One afternoon from idea to live link.

Upload what only you have. Write the rules in plain language. Open the link in ChatGPT, Claude, or your site. Ship the agent only you could ship.

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