Cake Wallet API integration & OpenFinance data services

1. Transaction history API

Pulls per-asset ledger entries (tx_id, block_height, timestamp_utc, direction, amount, fee, asset, memo, counterparty_address, confirmations). Concrete use: nightly export into a QuickBooks or Xero staging table for reconciliation against invoices.

2. Balance & account sync

Read-only sync of wallet and sub-account balances, including pending vs. confirmed split, locked UTXOs and Monero view-key derived balances. Concrete use: real-time treasury dashboards that compute total crypto holdings across multiple Cake Wallet seeds.

3. Silent Payments & MWEB scanner

Background scanner that accepts a Bitcoin SP scan key or an LTC MWEB view key and returns only the transactions belonging to that wallet. Concrete use: compliant audit trail for privacy-preserving payroll without exposing the full blockchain graph.

4. Exchange quote & swap integration

Wraps the ChangeNOW / SimpleSwap / Trocador provider layer that Cake Wallet integrates, exposing a unified /quote and /swap endpoint with rate, slippage, min/max, and on-chain settlement. Concrete use: hedging bot that rebalances from XMR into USDT when thresholds are crossed.

5. Cake Pay merchant & gift card feed

Surfaces Cake Pay purchases (merchant, brand, denomination, fiat_amount, settlement_asset) as a line-item stream. Concrete use: expense categorization in SaaS accounting tools, or cashback calculation for corporate travel spending.

6. Webhook & background-sync relay

Converts Cake Wallet's in-app background sync into push notifications (confirmed_tx, low_balance, failed_broadcast, swap_completed). Concrete use: ops alerting in Slack or PagerDuty when a cold-storage inflow is detected.

Scenario A — Crypto accounting for freelancers and DAOs

Business context: a freelance contractor is paid in XMR and USDT through Cake Wallet and needs to file quarterly taxes. Data / API: Transaction history API + Exchange quote API are called nightly; outputs are pushed into a Koinly or CoinTracker-compatible CSV. OpenFinance mapping: the wallet becomes a self-reporting "account" whose normalized ledger feeds downstream tax engines just like an open-banking account statement.

Scenario B — Corporate treasury with privacy coins

Business context: a small DeFi studio holds operating funds in XMR (payroll buffer), BTC (long-term), and USDT (float). Data / API: Balance & account sync plus the SP/MWEB scanner; results roll up into a Grafana dashboard with alerts for sub-threshold BTC reserves. OpenFinance mapping: treats the non-custodial wallet as a bookable treasury account with daily NAV, parallel to bank OpenBanking feeds.

Scenario C — Merchant reconciliation with Cake Pay

Business context: an e-commerce brand accepts crypto via Cake Pay gift cards and wants per-SKU reconciliation. Data / API: Cake Pay merchant feed + Transaction history API cross-joined on order_id. OpenFinance mapping: the output is a PSP-style settlement report (payout date, FX rate, net/gross, fees) consumable by Shopify or WooCommerce connectors.

Scenario D — Compliance analytics for a regulated VASP

Business context: a licensed exchange offers Cake Wallet as a self-custody alternative and must apply Travel Rule / MiCA controls when users move funds in/out. Data / API: Webhook relay for confirmed_tx events plus sanctions-screening hooks (Scorechain / Chainalysis) invoked before signing. OpenFinance mapping: the event stream feeds AML case-management in the same shape as bank-wire alerts.

Scenario E — Cross-chain swap bot

Business context: an OTC desk wants to rebalance wallet inventory when XMR/BTC moves beyond a corridor. Data / API: Exchange quote API polled every 30 s; once a threshold is crossed, the swap is executed through Cake Wallet's integrated provider and logged via the webhook relay. OpenFinance mapping: mirrors FX execution reports used by open-banking payment initiation services (PISP).

1) Authenticate & bind a Cake Wallet session

POST /api/v1/cakewallet/session
Content-Type: application/json
X-Client-Id: studio-demo
Authorization: Bearer <PLATFORM_TOKEN>

{
  "wallet_handle": "user-9ab2",
  "networks": ["XMR", "BTC", "LTC", "ETH", "USDT_TRC20"],
  "scan_keys": {
    "BTC_SP": "sp1q...scankey...",
    "LTC_MWEB": "ltcmweb1q...viewkey..."
  },
  "consent_id": "c_20260418_7788",
  "ttl_minutes": 240
}

// 200 OK
{
  "session_id": "sess_01HX...",
  "expires_at": "2026-04-20T18:00:00Z",
  "granted_scopes": ["balance.read", "tx.read", "swap.read", "cakepay.read"]
}

2) Fetch normalized transaction statement

GET /api/v1/cakewallet/tx?asset=XMR&from=2026-01-01&to=2026-03-31&cursor=
Authorization: Bearer <SESSION_TOKEN>

// 200 OK
{
  "items": [
    {
      "tx_id": "a7c2...",
      "asset": "XMR",
      "direction": "in",
      "amount": "3.215000000000",
      "fee": "0.000012000000",
      "timestamp_utc": "2026-03-14T09:41:22Z",
      "confirmations": 82,
      "memo": "invoice-2026-03-14",
      "counterparty": null,
      "status": "confirmed"
    }
  ],
  "next_cursor": "eyJvZmZzZXQiOjUw",
  "schema_version": "of.tx.v1"
}

3) Subscribe to webhook events

POST /api/v1/cakewallet/webhooks
Authorization: Bearer <PLATFORM_TOKEN>

{
  "url": "https://ops.example.com/hooks/cakewallet",
  "events": [
    "tx.confirmed",
    "swap.completed",
    "cakepay.purchased",
    "balance.low"
  ],
  "secret": "whsec_..."
}

// Delivered event (HMAC-SHA256 signed)
{
  "event": "swap.completed",
  "session_id": "sess_01HX...",
  "provider": "changenow",
  "from_asset": "XMR",
  "to_asset": "USDT_TRC20",
  "from_amount": "5.00",
  "to_amount": "1034.21",
  "settlement_tx": "0x9c1f...",
  "occurred_at": "2026-04-19T12:07:44Z"
}

Regulatory alignment

Cake Wallet itself is non-custodial and open source, which means compliance responsibility sits with the integrator. Our delivery aligns with the EU Markets in Crypto-Assets (MiCA) regulation (in force since 30 December 2024) and the FATF Travel Rule as implemented by the EU Transfer of Funds Regulation. In the EU we also cover GDPR data-minimization and consent logging; US deployments can be extended with FinCEN reporting hooks.

Privacy-preserving by design

Monero view keys, Bitcoin Silent Payments scan keys and Litecoin MWEB view keys are only used server-side for the minimum window needed to produce a report, then rotated. No private spend keys are ever transmitted. Native Tor egress, optional self-hosted nodes and hashed counterparty identifiers protect both the user and the integrator.

Deliverables checklist

• OpenAPI 3.1 specification for all Cake Wallet endpoints
• Protocol & auth analysis report (session binding, scan-key handling, provider integrations)
• Runnable reference source in Python and Node.js (FastAPI / NestJS)
• Postman collection + integration tests + sandbox fixtures
• Compliance notes (MiCA, Travel Rule, GDPR, US FinCEN considerations)
• Deployment guide for self-hosted vs. managed pay-per-call mode

Engagement models

Source-code delivery from $300 — we hand over runnable API source code and documentation; you pay after delivery upon satisfaction. Ideal for teams that want to operate and audit the integration themselves.

Pay-per-call API billing — you access our hosted Cake Wallet gateway and pay only for the calls you make, with no upfront fee. Ideal for pilots, seasonal workloads, or teams that prefer usage-based pricing.

About our studio

We are an independent technical studio specializing in App interface integration and authorized API integration. Our engineers come from payments, digital banking, Web3 infrastructure and protocol analysis backgrounds. Since 2018 we have delivered interface implementations for fintech, crypto, e-commerce and travel clients across Europe, North America, South-East Asia and the Middle East.

• Protocol analysis for mobile and web clients (TLS pinning, request signing, device binding)
• OpenData / OpenFinance / OpenBanking gateway design
• Custom SDKs in Python, Node.js, Go, and Kotlin / Swift
• Full pipeline: reverse engineering → build → validation → compliance sign-off

Contact

Share your Cake Wallet integration requirements and we will come back within one business day with a scope, timeline and quote.

Open contact page

NDAs available on request. We do not accept engagements that require bypassing user consent, custodial controls or local regulation.

Engagement workflow

1. Scope confirmation — agree on networks (XMR, BTC, LTC, ETH, SOL, TRX, USDT) and modules (tx, balance, swap, Cake Pay, webhooks).
2. Protocol analysis & API design — 2–5 business days, depending on Silent Payments / MWEB coverage.
3. Implementation & internal validation — 3–8 business days against sandbox fixtures and real testnets.
4. Docs, samples, and test cases — OpenAPI, Postman, pytest / jest suites, 1–2 business days.
5. Go-live — typical first delivery: 5–15 business days; exchange-provider approvals can extend this.

FAQ

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