> For the complete documentation index, see [llms.txt](https://docs.csml.dev/language/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.csml.dev/language/standard-library.md).

# Standard Library

- [Keywords](https://docs.csml.dev/language/standard-library/keywords.md)
- [Built-in Functions](https://docs.csml.dev/language/standard-library/builtin-functions.md)
- [HTTP Client](https://docs.csml.dev/language/standard-library/http.md)
- [SMTP Client](https://docs.csml.dev/language/standard-library/smtp.md)
- [Crypto Utilities](https://docs.csml.dev/language/standard-library/crypto.md): Available in CSML v1.5+
- [JWT](https://docs.csml.dev/language/standard-library/crypto/jwt.md)
- [Hash, HMAC](https://docs.csml.dev/language/standard-library/crypto/hash-hmac.md)
- [Base64, Hex](https://docs.csml.dev/language/standard-library/crypto/base64-hex.md)
- [String methods](https://docs.csml.dev/language/standard-library/string-methods.md)
- [Array methods](https://docs.csml.dev/language/standard-library/array-methods.md)
- [Object methods](https://docs.csml.dev/language/standard-library/object-methods.md)
- [Number methods](https://docs.csml.dev/language/standard-library/number-methods.md)
- [Generic methods](https://docs.csml.dev/language/standard-library/generic-methods.md)