# directories.do > Directories.do is part of the .do platform for building autonomous Businesses and delivering Services-as-Software. directories.do is one of the primitives of Platform.do. Every .do shares one grammar, Business-as-Code, and one SDK. ## Page - [directories.do](https://directories.do/): Directories.do ([Markdown](https://directories.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 ## Optional - [Full text](https://directories.do/llms-full.txt): this index plus the page in full