Monero.com Wallet API integration (XMR OpenData & protocol analysis)

Wallet RPC bridge

A hardened gateway in front of monero-wallet-rpc exposing get_balance, get_transfers, get_payments, create_address, and check_tx_key. Used for automated Monero transaction export into accounting systems and merchant back-offices.

Subaddress provisioning API

Deterministic subaddress issuance (major/minor index) tied to your invoice IDs, with webhook callbacks on confirmation depth. Ideal for e-commerce checkout, donations, and OTC invoicing where each customer receives a unique XMR address.

Swap & fiat telemetry

Normalized feed of cross-chain swap orders (XMR ⇄ BTC / LTC / ETH / SOL) and buy/sell flows. Fields include rate, provider, destination chain, refund address, and settlement txid — the data accountants need for cost-basis and P&L reports.

Cake Pay & merchant bridge

Cake Pay voucher purchase events, redemption records, and merchant settlement endpoints. Lets retail platforms reconcile crypto spend against fiat SKUs without handling user private keys directly.

Tor-aware connectivity layer

Connects to remote Monero nodes over Tor (mirroring the app's native Tor integration shipped in 2025) so your backend inherits network-level privacy when it polls balances or broadcasts transactions.

Hardware wallet handshake

APDU-level flows that support Ledger (added 2024) and the Foundation & Keystone devices targeted on the 2025 roadmap, so enterprise treasury apps can co-sign XMR transactions without exposing seeds.

1 · Merchant XMR checkout with unique subaddresses

A privacy-first merchant issues a fresh subaddress per order from a shared Monero.com business wallet. Our backend calls create_address, stores the (order_id → subaddress) mapping, and pushes webhooks on first confirmation and unlock. Involves create_address, get_transfers, check_tx_key. Maps to the OpenData concept of "per-customer receivables" with deterministic reconciliation.

2 · Accountant-friendly Monero transaction export

A treasury team wants a quarterly CSV of every XMR move across four wallets. The API consolidates get_transfers output plus the swap/buy feed into a single ledger with cost basis in USD and EUR. OpenFinance angle: exposes otherwise siloed wallet activity as a standards-friendly statement feed for the finance team's ERP.

3 · Portfolio dashboard across XMR + BTC + ETH

A portfolio app aggregates user-authorized Monero.com wallets alongside Bitcoin and Ethereum balances. Our bridge normalizes get_balance results, pairs them with swap history, and emits a provider-agnostic "positions" feed — the same pattern OpenBanking uses to aggregate multi-bank balances into one dashboard.

4 · Compliance audit trail for regulated operators

A regulated exchange or OTC desk holding XMR wants an immutable, authenticated record of every inbound and outbound transfer, with tx proofs (get_tx_key + check_tx_key). We deliver signed export bundles that satisfy Travel Rule–adjacent internal controls while respecting Monero's privacy model.

5 · Donation platform with privacy-preserving analytics

A non-profit accepts XMR donations via Monero.com. Our integration exposes per-campaign subaddress buckets, aggregate totals, and anonymous donor counts — enough to report impact without compromising donor privacy. Emphasizes the "open data, minimized data" angle.

API example — authenticated balance & transfer snapshot

POST /api/v1/monero/snapshot
Authorization: Bearer <ACCESS_TOKEN>
Content-Type: application/json

{
  "wallet_id": "wlt_7f2c...",
  "account_index": 0,
  "include": ["balance", "transfers", "subaddresses"],
  "transfer_filter": {
    "in": true, "out": true, "pending": true, "pool": true,
    "min_height": 3200000
  }
}

// Response (truncated)
{
  "balance_atomic": 1842300000000,         // 1.8423 XMR
  "unlocked_atomic": 1800000000000,
  "transfers": [
    {
      "txid": "a91c...",
      "type": "in",
      "amount_atomic": 500000000000,
      "fee_atomic": 16720000,
      "height": 3201877,
      "confirmations": 12,
      "timestamp": "2026-02-14T10:22:03Z",
      "subaddr_index": {"major":0,"minor":3}
    }
  ]
}

API example — create subaddress & register webhook

POST /api/v1/monero/subaddress
{
  "wallet_id": "wlt_7f2c...",
  "account_index": 0,
  "label": "order-2026-04-00912",
  "webhook": {
    "url": "https://merchant.example/hooks/xmr",
    "on": ["received", "confirmed_10", "unlocked"],
    "secret": "whsec_...-rotated-quarterly"
  }
}

// 201 Created
{
  "address": "8BxxyYZ... (95-char standard XMR subaddress)",
  "index": {"major": 0, "minor": 17},
  "created_at": "2026-04-24T08:10:11Z"
}

API example — verify a transaction with tx_key

POST /api/v1/monero/verify
{
  "txid": "a91c...",
  "tx_key": "b8e4...",
  "address": "8BxxyYZ..."
}

// Response
{
  "confirmed": true,
  "received_atomic": 500000000000,
  "in_pool": false,
  "confirmations": 14
}

// Error example
{
  "error": {
    "code": "INVALID_TX_KEY",
    "message": "tx_key does not correspond to txid for the supplied address"
  }
}

Auth & security posture

OAuth2 client-credentials for machine-to-machine access, short-lived bearer tokens, mandatory TLS 1.2+, HMAC-signed webhooks, and optional mTLS for enterprise tenants. View-only keys are preferred wherever possible so the integration never touches spend keys. For self-hosted deployments, the bridge can be pinned to a Tor hidden service endpoint of monero-wallet-rpc.

Deliverables checklist

• OpenAPI 3.1 specification covering balance, transfers, subaddresses, swaps, webhooks
• Protocol & auth flow report (RPC auth, Tor routing, view-key handling)
• Runnable source (Python / Node.js / Go) for wallet-RPC bridge and webhook dispatcher
• Automated test suite including stagenet end-to-end transaction flows
• Compliance pack: GDPR DPA template, consent log schema, Travel-Rule notes
• Runbook for node failover, background-sync issues, and reorg handling

Engagement workflow

1. Scope confirmation: which wallets, scenarios, and exports you need.
2. Protocol & data-surface review (2–4 business days).
3. Build and internal validation on stagenet (3–8 business days).
4. Docs, SDK samples, and test-case handover (1–2 business days).
5. First full delivery typically 5–15 business days; hardware wallet or Tor-only deployments may extend timelines.

FAQ

What do you need from me?

Do you ever hold my spend keys?

How long is delivery?

Who we are

We are an independent technical studio specializing in app interface integration and authorized API integration. Our engineers come from payments, crypto infrastructure, protocol analysis, and cloud backgrounds, and we have shipped wallet bridges, open-finance connectors, and OpenBanking aggregators for clients in North America, Europe, and APAC.

• Crypto wallet RPC & protocol analysis (Monero, Bitcoin, EVM chains)
• OpenBanking & OpenFinance aggregators (PSD2, FDX-inspired)
• Python / Node.js / Go SDKs, test harnesses, and OpenAPI-first delivery
• Full pipeline: protocol review → build → validation → compliance documentation
• Source code delivery from $300 — runnable API source code and full documentation; pay after delivery upon satisfaction
• Pay-per-call API billing — access our hosted endpoints and pay only per call, no upfront cost

Contact

For quotes or to submit your target app and requirements, open our contact page:

Go to contact page

We respond within one business day and sign NDAs on request before scoping calls.