> For the complete documentation index, see [llms.txt](https://docs.offblocks.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.offblocks.xyz/developer-guides/api-integration/simulator.md).

# Simulator

Sometimes, you may want to test production flows in a sandbox without access to live payment networks or other service integrations. To facilitate that, we have introduced OffBlocks API Simulator, which simulates certain actions, such as incoming payment authorisations and customer verifications, for you to test API integration end-to-end.

 Please, refer to [Simulator](/developer-guides/api-integration/api-reference/simulator.md)page for more details on supported operations and API reference.