---
title: samplex_to_json (latest version)
description: API reference for samplomatic.serialization.samplex_to_json in the latest version of samplomatic
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/samplomatic/auto/serialization-samplex-to-json
---

# samplex\_to\_json

`samplomatic.serialization.samplex_to_json(samplex: Samplex, filename: str, ssv: int) → None`

`samplomatic.serialization.samplex_to_json(samplex: Samplex, filename: None, ssv: int) → str`

[GitHub](https://github.com/Qiskit/samplomatic/tree/main/samplomatic/serialization/samplex_serializer.py#L113-L151)

Dump a samplex to json.

**Parameters**

- **filename** – An optional path to write the json to.
- **ssv** – The samplex serialization to write.

**Returns**

Either the json as a string or `None` if `filename` is specified.

**Raises**

[**SerializationError**](/docs/api/samplomatic/auto/exceptions-serialization-error "samplomatic.exceptions.SerializationError") – If `ssv` is incompatible.