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

# Authorizations and sponsored relay

A Ground API key authenticates API requests. Vault changes also require an onchain authorization from your organization's Turnkey authority or an installed delegate. The authorization endpoint validates and simulates the requested action before returning the payload to sign.

An authorization moves through `prepared`, approval or external signing, relay, broadcast, and confirmation. Ground pays the transaction gas without changing the signed action. Reuse an `Idempotency-Key` only when retrying the same request.

A `202` from the relay endpoint is acceptance for processing, not onchain confirmation. Poll the authorization status until it is terminal.