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Changelog

All notable API changes documented here.

v0.10.1 — 2026-04-07

Security Hardening

  • x402 verifiers — stricter on-chain validation (recipient, token contract, BigInt amounts)
  • Auth — requireRole() fix, timing-safe password comparison, login lockout (5 attempts → 15 min)
  • CSP — removed unsafe-eval
  • SSRF — webhook URLs to private IPs blocked
  • Rate limits — payment status polling + admin seed endpoints

v0.10.0 — 2026-04-06

x402 Facilitator

  • POST /v1/x402/verify — synchronous on-chain payment verification across 5 chains
  • GET /v1/x402/config — facilitator payTo addresses, supported networks/assets
  • POST /v1/x402/settle — trigger settlement of x402 payments
  • GET /v1/x402/payments — list merchant’s x402 payments
  • @inzi/x402 SDK — Express middleware + Fastify plugin (zero deps, native fetch)
  • Supported chains: Polygon, Base, Ethereum, Tron, TON

Developer Portal

  • docs.inzilink.com — Nextra 4 docs site with 22 pages
  • API reference, guides, SDK examples, x402 integration guide

v0.9.0 — 2026-04-05

Wallet Monitoring & Reports

  • /api/v1/wallets — CRUD for watched wallet addresses (Polygon/Base/Ethereum/Tron/TON)
  • Balance fetching — EVM + TronGrid + TON Center, Redis cache 60s, background worker
  • Transaction sync — Etherscan/Polygonscan/Basescan/TronScan/TON Center (5min cycle)
  • Auto-tagging — matches tx hashes against Inzi payments (payment/sweep/settlement)
  • Manual labels — user-defined tags on transactions
  • /api/v1/reports/summary — aggregate balances, inflow/outflow, tag breakdown
  • /api/v1/reports/transactions — cross-wallet tx list (JSON + CSV export)

Bug Fixes

  • TON added to checkout chain validation (was missing from Zod enum)
  • Tron added to Merchant API checkout accepted chains

v0.8.0 — 2026-04-04

Rebrand & Domain

  • Inzilink → Inzi — brand name updated across all UI, emails, schema.org
  • Primary frontend domain: inzipay.com
  • API domain unchanged: api.inzilink.com
  • Payment links unchanged: inzilink.com/p/{code}

Fiat Waitlist

  • POST /api/v1/waitlist/fiat — capture card payment interest

v0.7.0 — 2026-04-03

Merchant Checkout API

  • POST /v1/checkouts — create checkout session, returns hosted checkout_url
  • GET /v1/checkouts/:id — status + payment details with chk_live_/chk_test_ prefixed IDs
  • GET /v1/checkouts — paginated list with status/date filters
  • Metadata passthrough — arbitrary JSON (max 4KB), returned in webhooks untouched
  • Inzi webhook format — timestamp-based HMAC (X-Inzi-Signature), events: checkout.completed, checkout.expired, checkout.underpaid
  • Test mode — sk_test_ keys fire mock webhook after 5s, no blockchain monitoring
  • Stripe-like errors — { error: { type, message, param, code } }
  • Per-endpoint rate limits — 60/30/120 req/min with X-RateLimit-* headers
  • redirect_url — auto-redirect 2s after payment success
  • Amount tolerance — max(1%, $0.05) for network rounding

TON Blockchain

  • Chain.TON — The Open Network added as supported chain
  • TonTheScanner — Jetton (USDT) transfer monitoring via TON Center v3 API
  • TON wallet — V4R2 hot wallet on mainnet, memo-based addressing

v0.6.0 — 2026-03-30

Merchant Experience

  • Payment link templates: invoice, donation, subscription, custom
  • Custom branding on checkout (logo, color, support URL)
  • CSV export for payments and settlements
  • Daily email summary (08:00 UTC)
  • Multi-user merchant accounts (owner/admin/viewer roles)
  • Team management API and invite flow

v0.5.0 — 2026-03-30

Production Hardening

  • Webhook retry dashboard + manual retry
  • Sentry error monitoring
  • PaymentRouter verified on Polygonscan and BaseScan
  • Uptime monitoring

v0.4.0 — 2026-03-28

Non-Custodial Escrow

  • PaymentRouter contract on Polygon
  • Dual payment mode: escrow (non-custodial) + custodial fallback
  • Wallet generation endpoint
  • Auto on-chain merchant registration

v0.3.0 — 2026-03-22

Admin & Billing

  • Admin panel for merchant management
  • Fee system (starter 1.5%, growth 1.0%, scale 0.7%, custom)
  • Subscription billing

v0.2.0 — 2026-03-15

Frontend & Deployment

  • Merchant dashboard (Next.js)
  • Checkout page with QR code
  • Landing page
  • E2E + integration tests
  • Railway (API) + Vercel (web) deployment
  • API key generation (sk_live_ prefix)

v0.1.0 — 2026-03-11

Initial MVP

  • Monorepo (pnpm workspaces)
  • Fastify 5 API with versioned routes
  • Prisma 6 + PostgreSQL
  • JWT + API key authentication
  • EVM scanner (Polygon, Base, Ethereum)
  • TronScanner (TRC-20 USDT)
  • BullMQ workers (scanner, payment, webhook, sweep, settlement)
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