Headers
Every request to the storage API carries both keys:Example
Where keys come from
Keys are created in the dashboard, under the company’s API key area. Creation requires:- company context,
- the permission to manage API keys,
- active billing access,
- a verified email on trial accounts,
- step-up authentication.
Which surface am I on?
The API key is a machine credential. The browser session is a human credential. They do not substitute for one another.
Company scope
A key authenticates as its company workspace. It cannot reach another company’s resources, even with a valid bucket ID. Individual EverSpark accounts are refused with403 API_COMPANY_ONLY. The single first-party exception is a device-bound backup key used by the enrolled desktop agent.
Server-side only
API-key headers are not allowed by CORS. A browser fetch from another origin that includes these headers will fail preflight. This is deliberate: an API key embedded in a browser bundle is a leaked key. Proxy requests through your server if you need a browser front end. See Requests and CORS for details.Failure modes
Related
API keys
Creation, rotation, revocation.
Scopes
Which scopes each operation needs.
Requests and CORS
Why this is server-side only.
Rate limits
Quotas and throttling.