Instant Supabase Realtime UI sync
When xpayr-webhook updates Postgres, Supabase Realtime pushes the unlocked Pro badge or credit top-up to the browser immediately.
Aceptar Cripto en Aplicaciones Supabase y Edge Functions
Sync non-custodial 0.5% USDC, EURC, and USDT subscriptions, AI credit balances, and RLS entitlements directly into Supabase Postgres via Deno Edge Functions.
Integration Details
Version
1.0.0
Last Updated
2026-11-12
Compatibility
Supabase Postgres · Deno Edge Functions · Auth RLS
Open-Source Repo
v1.0.0 Release
View TypeScript SDK & Examples
How to wire XPayr into Supabase in 5 minutes
- Set XPAYR_API_KEY and XPAYR_WEBHOOK_SECRET via supabase secrets set
- Create a create-checkout Edge Function passing auth.uid() inside XPayr session metadata
- Deploy an xpayr-webhook Edge Function (--no-verify-jwt) verifying X-XPayr-Signature via WebCrypto
- Atomically credit Postgres user balances or active_until timestamps enforced by Row Level Security (RLS)
5-Step Supabase Postgres + Deno Edge Function Blueprint
- Create an idempotent xpayr_webhook_events(event_id text primary key, session_id text, tx_hash text, created_at timestamptz) table in Supabase Postgres.
- Store secrets cleanly with supabase secrets set XPAYR_API_KEY=sk_test_... XPAYR_WEBHOOK_SECRET=whsec_....
- In supabase/functions/create-checkout/index.ts, authenticate the caller JWT via supabaseClient.auth.getUser() and call POST https://xpayr.com/api/v1/payments with metadata: { user_id: user.id, plan: "pro" }.
- Deploy supabase functions deploy xpayr-webhook --no-verify-jwt so XPayr webhooks reach your Deno handler, then verify X-XPayr-Signature over await req.text() using crypto.subtle.
- Execute a single Postgres RPC transaction (service_role key) inserting event_id and incrementing credits or extending subscriptions — triggering instant Supabase Realtime UI updates on the client!
Why AI & SaaS builders on Supabase choose XPayr
Cero contracargos on AI GPU credits
Protect OpenAI, Anthropic, ElevenLabs, and Replicate wrapper apps from stolen-card chargeback wipes.
Atomic Postgres idempotency
Primary-key constraints on event_id and tx_hash guarantee exact-once credit accounting under any retry scenario.
Works with Next.js, Expo & Flutter
Share one Supabase backend across Next.js (/plugins/nextjs), React Native, Flutter, and Chrome extensions (/license-kit).
The Default Non-Custodial Crypto Billing Stack for Supabase SaaS & AI Startups
Supabase has become the backend of choice for AI startups, indie SaaS founders, and mobile/extension developers worldwide. Combining Supabase Auth + Postgres RLS + Deno Edge Functions with XPayr 0.5% non-custodial checkout gives your app borderless stablecoin monetization across 16 blockchains in under 100 lines of TypeScript.
FAQ
Supabase Crypto Billing & Webhook FAQ
By default, Supabase API Gateway expects a Supabase Auth JWT in the Authorization header. Passing --no-verify-jwt allows external webhooks to reach your Deno function, where you cryptographically enforce XPayr X-XPayr-Signature HMAC-SHA256 instead.
Pass metadata: { supabase_user_id: user.id } when creating the XPayr session in your authenticated Edge Function; XPayr returns that exact metadata inside the signed webhook payload.
Yes! Write both Stripe and XPayr webhook handlers to the same user_entitlements or credit_ledger Postgres table with provider = "xpayr" and tx_hash recorded for finance audits.
Yes — run supabase functions serve alongside XPayr /tools/webhook-tester or cloudflared/ngrok tunnels using sk_test_ keys.
Ship 0.5% crypto billing on Supabase in minutes.
Deno WebCrypto webhooks + Postgres RLS + liquidación directa del 99.5% en su billetera.