# Upsert Block

`UpsertBlocks`

`POST /api/blocks`

- [OpenAPI fragment](https://www.lusid.com/docs/api/lusid/endpoints/blocks/UpsertBlocks.json)
- [Rendered page](https://www.lusid.com/docs/api/lusid/endpoints/blocks/UpsertBlocks)

Upsert; update existing blocks with given ids, or create new blocks otherwise.

## Referenced schemas

- [BlockSetRequest](https://www.lusid.com/docs/api/lusid/schemas/BlockSetRequest.txt)
- [ResourceListOfBlock](https://www.lusid.com/docs/api/lusid/schemas/ResourceListOfBlock.txt)

[< Blocks](https://www.lusid.com/docs/api/lusid/endpoints/blocks/llms.txt)