Subscription and allowances

GET 
/billing

Subscription state, billable numbers, usage against the plan cap and the active licences, in a single response.

Changing plan, cancelling and opening checkout need a dashboard session: they are the account owner’s calls, and an API key belongs to the account, not to a person.

Responses

200

Record found.

401

Missing, malformed, unknown or revoked token (authentication), or a suspended account (tenant_inactive).

422

Payload failed validation (invalid_request, detailed in issues) or was rejected by Meta (meta_error, with the original body in meta).

429

Rate limit exceeded (rate_limit).

Response Headers

Retry-After

Seconds to wait before retrying.

X-RateLimit-Category

Which rate limit category applied — send, media or default.

X-RateLimit-Scope

Which bucket the other headers describe — key (the API key), session (the dashboard) or account (the account ceiling).

X-RateLimit-Limit

Request ceiling for this category in the current window.

X-RateLimit-Remaining

Requests left in the current window.