# Signed API V2

For external use we offer an API that requires each request to be sent with a "signature" created using the request content and a timestamp. This makes each signature useful for a short time only and prevents possible replay attacks.

## Signed API V2

Base URL: [https://nrsdb.uk/api/nrsdb/v2](https://nrsdb.uk/api/nrsdb/v2)

### Signature

Send the following HTTP Headers

X-NRSDB-Signature

X-NRSDB-Timestamp

X-NRSDB-Key

### Endpoints

#### ESRs

[https://nrsdb.uk/api/nrsdb/v2/esrs?age=3](https://nrsdb.uk/api/nrsdb/v2/esrs?age=3)