> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pacifica.fi/llms.txt
> Use this file to discover all available pages before exploring further.

# Signing

> Pacifica uses deterministic JSON formatting to generate Ed25519 signatures for API authentication.

All POST requests require signing, whereas GET and websocket subscriptions do not.\
\
We *strongly* recommend following the [Pacifica Python SDK](https://github.com/pacifica-fi/python-sdk) to generate signatures and submit trading requests. The following example explains the key steps in constructing valid signatures.