Billing (WG)

Working group documents for the Grida billing surface (subscriptions, AI credit, Stripe ↔ Metronome sync).

Documents

• AI Credits — Master Plan — design notes for the Metronome-backed prepaid credit system, top-up + auto-reload flows, drain order, refund pattern, gate primitive.
• Metronome integration — the integration playbook: substrate setup, payment-gate config, webhook event taxonomy.
• Known issues — living register of mitigated / accepted issues across the billing surface (KI-BILL-NNN).

See also

• Contributor setup — local dev with Stripe + Metronome sandbox accounts and a cloudflared tunnel.
• User-facing billing copy: docs/platform/billing.mdx.