2 July 2026

402 responses with a payment link when the API add-on is inactive

Improvement.

Sending through a connection whose Platform API add-on is not active now returns HTTP 402 with an actionable body instead of a bare 403: { error: "license_inactive", code, message, payment_url }.

The original core code (addon_required or license_inactive) is preserved in code, and payment_url points where the connection owner can activate the add-on. MCP tool results return the same information as plain text so an AI agent can relay it to the human.

Every other error status is still relayed verbatim — branch on the error code, never on message text. See Errors & idempotency.