# HMRC

- [Build ct600](/openapi/openapi-v2/api-reference/hmrc/build-ct600.md): OpenAPI V2
- [Retrieve ct600](/openapi/openapi-v2/api-reference/hmrc/retrieve-ct600.md): OpenAPI V2
- [Embed irmark](/openapi/openapi-v2/api-reference/hmrc/embed-irmark.md): OpenAPI V2