YOHAKU
Enter YohakuEnter

Make the form. Read the room.

Draft with AI, publish a conversational form, collect resumable responses, and ask the answers what changed—all from one small workspace.

Enter YohakuSee the whole loop

FORM BUILDER · RESPONSE INBOX · BOUNDED AI

A form moving from an idea to a useful answerA vector workflow connects a written brief, an editable form, incoming responses, and an evidence-based AI insight.01 · YOUR BRIEF02 · FORMWhat shouldwe know?03 · RESPONSES04 · EXAMPLE INSIGHT“Most hesitationappears beforethe pricing answer.”余
One continuous loop: brief → form → response → evidence.

One thoughtful loop.

Not four disconnected tools.

HOW IT WORKS

From loose thought to useful evidence.

Yohaku keeps creation, delivery, response handling, and analysis in the same place. Each stage hands clean context to the next.

  1. 1.0Draft

    Start with intent, not empty fields.

    Describe the outcome, audience, tone, and constraints. Yohaku drafts a complete typed form with concise questions and valid answer rules.

    BRIEFDRAFT
  2. 2.0Shape

    Make every question earn its place.

    Edit copy, reorder fields, add conditional logic and answer recall, then preview the result. AI changes arrive as one reversible patch; you decide what ships.

    01 · SHORT TEXT02 · SINGLE CHOICE03 · FOLLOW-UP
  3. 3.0Publish

    Send one link that remembers.

    Share or embed a conversational form with keyboard controls, clear progress, partial-response saving, and a finish that feels considered.

    yohaku.app/f/...
  4. 4.0Learn

    Read the signal, then question it.

    Review completion, partial responses, timing, and drop-off. Export CSV or ask a bounded AI question over real aggregates and samples.

    ANSWER
WORKFLOWS

Different questions. The same clear rhythm.

Start from the work you need done. Yohaku gives each use case a focused front door and a useful back room.

01

Events and RSVPs

Collect
Attendance, guests, dietary needs, travel details
Learn
Who is coming, what needs planning, where answers are incomplete
02

Product feedback

Collect
Context, friction, feature requests, follow-up permission
Learn
Repeated pain points, evidence behind requests, response drop-off
03

Research and surveys

Collect
Structured answers, open text, ratings, conditional branches
Learn
Patterns, outliers, caveats, and export-ready response rows
04

Intake and applications

Collect
Profiles, goals, eligibility, files, and next-step consent
Learn
Complete submissions, missing context, and a readable team inbox
AI, WITH EDGES

Useful where judgment starts.

Choose Anthropic, OpenAI, OpenRouter, or DeepSeek. Yohaku gives each model a typed job, a bounded context, and a place for you to say no.

AnthropicOpenAIOpenRouterDeepSeek
AI capabilities and the guardrails applied to each one.
MomentWhat Yohaku can doBuilt-in edge
First draftTurn a plain-language brief into a complete editable form.Typed schema · concise questions
RefinementRewrite the voice, shorten the form, add fields, or adjust logic.One undoable patch · no auto-publish
Follow-upAsk one useful question based on the responder’s last answer.Creator goal · explicit boundaries
AnalysisAsk what the response data says and inspect supporting evidence.Bounded samples · caveats for thin data
TEAM ACCESS

Give people the right room to work.

The first account is the permanent superuser. Add teammates with a sensible role, then tune individual capabilities when the default needs a small exception.

  • Build Create and edit forms
  • Ship Publish public links
  • Read Review and export responses
  • Ask Use configured AI models

SELF-HOSTED STACK · BUN · NEXT.JS · TYPESCRIPT 7 · MYSQL

Role and capability controlsThe protected superuser assigns roles, while individual capabilities can be granted or revoked for each teammate.余SUPERUSERADMINCREATORANALYSTVIEWER+ / − CAPABILITY
Roles set the baseline. Capability overrides handle the exception.
PLAIN ANSWERS

The useful details, without the scavenger hunt.

01What can I build with Yohaku?
Conversational surveys, RSVP flows, product-feedback forms, research questionnaires, applications, intake forms, and internal check-ins. The same builder handles branching, answer recall, public links, and embeds.
02Which AI providers can I use?
Anthropic, OpenAI, OpenRouter, and DeepSeek are supported. The superuser can store provider keys, set exact model names, and choose the workspace default from Settings.
03Can teammates have different access?
Yes. The first account is the protected superuser. It can add admins, creators, analysts, and viewers, then grant or revoke individual capabilities such as publishing, exporting, or using AI.
04Does the core workflow require an AI key?
No. Building, publishing, collecting responses, reviewing results, and exporting data still work. Provider keys add drafting, refinement, follow-up, and response analysis.
05How do I deploy Yohaku?
Run the Next.js app with Bun and point it at MySQL. The database URL and authentication secret stay in the deployment environment; AI credentials are managed by the superuser inside Yohaku.

There is room for a better question.

Make space for the answer.

Enter Yohaku