> For the complete documentation index, see [llms.txt](https://timechain.gitbook.io/neucron-javascript-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://timechain.gitbook.io/neucron-javascript-sdk/core.md).

# Core

- [Configuration](https://timechain.gitbook.io/neucron-javascript-sdk/core/configuration.md)
- [Error Handling](https://timechain.gitbook.io/neucron-javascript-sdk/core/error-handling.md)
- [Authentication and Headers](https://timechain.gitbook.io/neucron-javascript-sdk/core/authentication-and-headers.md)
- [Response Format](https://timechain.gitbook.io/neucron-javascript-sdk/core/response-format.md)