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Major is a platform for building apps, agents, skills, and workflows on top of your company’s data. You connect your databases, SaaS tools, and APIs once as connectors. Everything you build on Major uses those connectors securely, with access controlled per user. You describe what you want, an AI agent builds it in a sandbox, you preview it, and you deploy it to your team.

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Three ways to build

Platform

Build in the Major web app at app.major.build by chatting with the Platform Agent.

MCP

Install the Major plugin in Claude Code, Codex, ChatGPT, or Claude Desktop and build from the AI client you already use.

CLI

Develop apps locally in your own editor with the major CLI, then deploy with one command.
All three use the same platform. Apps, agents, and connectors you create in one are available in the others.

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Core concepts

Apps

Full-stack internal tools, such as dashboards and admin panels, deployed with a URL your team can open.

Agents

Reusable AI agents that act on your data and apps, from the web, in Slack, or on a schedule.

Skills

Versioned instruction bundles that agents load on demand to handle specific tasks.

Workflows

Multi-step automations that chain agents, app calls, branches, and human approvals.

Triggers

Start agents and workflows from schedules, connector events, webhooks, or your apps.

Connectors

Databases, SaaS tools, and APIs your apps and agents read from and write to.

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No secrets in your code

Connectors are configured once in Major. Your code uses generated clients that authenticate through the Major platform, so there are no connection strings, API keys, or .env files to manage. The same code works in the sandbox, locally, and in production.
Connectors can use one shared account or let each person sign in with their own account, so every user only reaches the data they are allowed to see. See Connectors for details.

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Get started

Quickstart

Install the Major plugin and build your first app in a few minutes.