Is Chatcraft free to use?

Yes, the tool itself is free and open-source. However, you must provide your own API key (from OpenAI, OpenRouter, etc.), and you will be billed by those providers for the tokens you consume.

Where is my data stored?

Your chat history and API keys are stored locally in your browser's IndexedDB and LocalStorage. No data is sent to Chatcraft's servers unless you explicitly use the 'Share' feature.

Does it support Mermaid diagrams?

Yes, Chatcraft has built-in rendering for Mermaid.js, allowing you to visualize flowcharts and sequence diagrams directly in the chat.

Can I use models other than ChatGPT?

Yes, by using an OpenRouter API key, you can access a wide variety of models including Claude, Llama, and Mistral through the Chatcraft interface.

How do I share a chat with someone?

You can click the 'Share' button to create a unique URL. This temporarily uploads the conversation to a database so others can view it via the link.

Nobody owns this listing yet

Chatcraft is live in the directory, but no verified owner controls the page.

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Developer Tools

Free

Chatcraft

Open-source AI assistant for developers. Bring your own API key to chat with GPT-4/Claude, render Mermaid diagrams, and preview HTML/CSS code directly in the browser.

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Rating

Reviews

Upvotes

3 months ago

Listed

ChatGPT

Open Source

Developer Assistant

Mermaid.js

GPT-4

LLM UI

Coding Assistant

Web-based AI

Tool information

Provider

Taras Glek

Platforms

Web

GitHub

Languages

English

API Available

Yes

Added to directory

3 months ago

Last updated

about 1 month ago

Rating

Not available

Pricing

Free

About Chatcraft

What the tool does and who it's for

Chatcraft is an open-source, web-based chat interface designed specifically for software developers to interact with LLMs like GPT-4 and Claude. Unlike standard chat interfaces, it functions as a developer-centric IDE-lite experience where users bring their own API keys. It features integrated support for rendering Mermaid diagrams, live HTML/CSS previews, and professional code editing tools. All data and API keys are stored locally in the browser to ensure privacy, and it allows users to share chat sessions via unique URLs. It is optimized for high-speed technical workflows, providing a more reliable alternative to standard web interfaces for power users.

Key capabilities

Bring Your Own Key (BYOK): Supports OpenAI and OpenRouter API keys for full control over costs.

Live Previews: Directly render HTML, CSS, and JavaScript code blocks in the browser.

Mermaid.js Support: Automatically renders diagrams and flowcharts from code.

Privacy-First: API keys and chat history are stored in local storage, never on a server.

Shared Chats: Generate public URLs to share specific conversations with teammates.

Multi-Model Switching: Toggle between different versions of GPT and Claude models.

System Prompt Customization: Define specific personas or instructions for the AI.

Markdown & Code Highlighting: Rich text formatting tailored for programming languages.

Pricing

Free — plans below

Open Source

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FAQ

Chatcraft FAQs

Common questions about Chatcraft