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No valid credentials were supplied. Attach a Bearer access token and retry.

The authenticated user's plan does not include this capability. `feature` names the gated capability, `requiredPlan` the cheapest plan that unlocks it, `currentPlan` the user's plan today, and `upgradeUrl` links to checkout. This is a plan gate, not a transient error — retrying without upgrading fails again; surface `upgradeUrl` to the user instead. Dormant until a plan that grants the feature is active, so a route that documents it may not currently return it.

The token is valid but lacks the OAuth scope (or token kind) this endpoint requires.

The addressed resource does not exist, or is not visible to the caller.