Mod-Mate · Modular AI companions

Build your own modular AI
companion for any world.

Build your own modular AI companion for any project, product, workflow, or creative world — with its own personality, rules, memory categories, and use-case templates.

Your data, your rules Memory categories Bring your own model
DM

DraftMate

Screenplay companion

Ready

You

Does the cold open match the rest of the script's tone?

DraftMate

Tone aligns with your noir reference. One line of action could be tightened, and we should add a guardrail about not inventing missing project facts.
Writing companionsQA & product companionsGame design companionsTabletop GM companionsSupport companionsOnboarding companionsWorkflow assistantsCharacter companionsWriting companionsQA & product companionsGame design companionsTabletop GM companionsSupport companionsOnboarding companionsWorkflow assistantsCharacter companions

Use cases

One platform. Every kind of companion you'll need to build.

View all templates →

Screenplay & story

Drafts that remember characters, beats, and your style.

QA & product triage

Group bugs, explain regressions, propose repro steps.

Tabletop game mastering

A co-GM that holds party state, NPCs, and clocks.

Idle game balance

Reads your loops and suggests safe rebalances.

Onboarding & workflow

Walk users through your product with context-aware help.

Worldbuilding memory

Keep lore, rules, and relationships consistent.

How it works

From idea to embedded companion in four steps.

Step 1

Describe the companion

Name, role, tone, and where it lives. Pick a starting template or begin blank.

Step 2

Set rules & memory

Add guardrails, decide what it remembers, and choose which actions it can take.

Step 3

Test in the playground

Talk to it, switch context packets, and refine the persona live.

Step 4

Plug into your app

Embed into your workflow via React, API, or custom host when ready.

Templates

Start from a companion that already understands the shape of your work.

Browse the gallery →
Writing & StoryConcept
Featured

Build a screenplay companion

A companion that tracks beats, characters, and tone across long drafts.

Does this scene match the tone, character voice, and story promise?

QA & ProductReady
Proof integration

QAtalyst QA Lead Companion

Production-style QA companion for triage, risk review, coverage gaps, release readiness, and workflow-specific quality guidance.

What risks should I flag and what coverage should I suggest?

Writing & StoryReady
Proof integration

Master Draft story companion

Production-style screenplay companion for story analysis, continuity, pitch clarity, and visual development notes.

Does this selected line break canon, or does it create a strong enough first-compromise moment?

QA & ProductTemplate
Popular

Create a QA triage partner

Cluster bugs by root cause, propose repro steps, and explain regressions.

What is missing from this bug report before it is ready for development?

Integrations

Companions that live where your work already happens.

See full roadmap →

React Widget

Coming Soon

Custom Web App

Coming Soon

Product Dashboard

Planned

Documentation Site

Planned

Internal Tool

Planned

API Integration

Planned

SDK

Coming Soon

Make a companion that actually understands your product.

Start with a template, write a persona, set the rules — and test it in the playground before anyone else sees it.