# plans.do > Manage subscription plans with AI-powered billing, usage tracking, and revenue optimization. Handle upgrades, downgrades, and complex pricing with full automation. Automate Subscription Billing with AI Intelligence. Manage subscription plans, usage-based billing, and revenue operations with AI-powered automation. Handle upgrades, downgrades, trials, and complex pricing models across 100+ payment providers. Optimize revenue with intelligent pricing recommendations and churn prevention. plans.do is one of the primitives of Platform.do, in the Business layer (goals, plans and the work itself). Every .do shares one grammar, Business-as-Code, and one SDK. ## Page - [plans.do](https://plans.do/): Plans.do - Automate Subscription Management | AI-Powered Billing and Revenue Operations ([Markdown](https://plans.do/index.md)) ## Business-as-Code - [What is Business-as-Code?](https://platform.do/business-as-code): the grammar every .do shares ([Markdown](https://platform.do/business-as-code.md)) - [Platform.do](https://platform.do/): infrastructure for autonomous business ([llms.txt](https://platform.do/llms.txt)) ## Docs - [Documentation](https://docs.platform.do): guides and reference for the whole platform - [SDK](https://docs.platform.do/sdk): TypeScript SDK, `import { on, send, db, $ } from 'sdk.do'` - [CLI](https://docs.platform.do/cli): the `do` command - [MCP](https://docs.platform.do/mcp): one MCP tool, `do`, that runs a script - [API](https://docs.platform.do/api): REST API ## Other Business primitives - [businesses.do](https://businesses.do) - [services.do](https://services.do) - [goals.do](https://goals.do) - [kpis.do](https://kpis.do) - [okr.do](https://okr.do) - [projects.do](https://projects.do) - [issues.do](https://issues.do) ## Optional - [Full text](https://plans.do/llms-full.txt): this index plus the page in full