Cash App Integration and OpenFinance Services

compliant protocol analysis for Cash App, P2P payments, Cash Card, Bitcoin and stock API implementations

Starting at $300
OpenData · OpenFinance · Protocol Analysis · Compliant Integration

Safely connect Cash App accounts, P2P payments, Cash Card, and crypto/investment capabilities to your platform

We provide enterprise-oriented protocol analysis and interface implementation: account binding, reconciliation queries, transaction export, Bitcoin buying/selling and stock trading orders, all built on authorized/public interfaces and compliance requirements.

P2P & Transaction API — Supports querying user receipts/payments by time range, amount, and transaction type with pagination; export to JSON / CSV / Excel.
Cash Card integration — Card activation, purchase notifications, transaction disputes and refund records with event subscription and callbacks.
Bitcoin & Stock trading module — Buy/sell templates, holding snapshots, trade confirmations and market data integration (with risk controls and rate limits).
Youth / Parent control scenarios — Sponsored accounts modeling, parental approval workflow and role-based access interfaces.
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Deliverables (Sample)

Standard Deliverables

  • API specifications (OpenAPI / Swagger) and authentication flow diagrams
  • Protocol analysis report (authorization chain, session refresh, IP/UA binding policies)
  • Runnable source code (Node.js / Python SDK examples)
  • Automated test scripts and sample data, Postman collection
  • Compliance recommendations (data minimization, logging, child account compliance)

Example: Transaction Reconciliation API (Pseudo-code)

# POST /api/v1/cashapp/transactions
# Headers: Authorization: Bearer <ACCESS_TOKEN>
{
  "user_id": "user123",
  "from": "2025-09-01",
  "to": "2025-09-30",
  "type": "all",
  "page": 1,
  "page_size": 100
}

Response:
{
  "status":"OK",
  "total": 124,
  "transactions":[
    {"id":"txn_001","date":"2025-09-04","amount":-25.00,"merchant":"Coffee Shop","method":"Card","status":"COMPLETED"},
    {"id":"txn_002","date":"2025-09-07","amount":2000.00,"merchant":"Payroll","method":"Direct Deposit","status":"COMPLETED"}
  ]
}

Typical Integration Scenarios

Account binding and authorization, transaction sync and reconciliation, card purchase notifications, Bitcoin/stock trade receipts, youth accounts with parental approval, and batch reconciliation & reporting.

API Integration Guide (Quick Start)

  1. Provide target scenarios: e.g., reconciliation export / card notifications / Bitcoin orders.
  2. Confirm authorization method: client-held OAuth credentials, developer keys, or agreed testing accounts.
  3. Protocol analysis: assess available public APIs, required authorization flows, and compliance constraints (usually 2–5 working days).
  4. Development delivery: deliver SDKs, sample code, Postman collection, and test cases (usually 3–8 working days).
  5. Go-live and audit: help configure Webhooks, logging and audit strategies, provide compliance and operations recommendations.

Security & Compliance (Key Points)

  • Operate only under client authorization or public APIs; no bypassing protections.
  • Support data minimization, encrypted transmission, usage logs, and consent records.
  • Provide parental consent and data isolation strategies for youth accounts.
  • Assist in drafting privacy notices and compliance documents as needed.

About Us

We are a studio focused on app protocol analysis and compliant API integration, with team members from mobile payments, digital banking, and cloud security. We deliver compliant API endpoints and documentation to help clients integrate Cash App capabilities into their systems.

  • Supports Android and iOS protocol analysis and SDK integration
  • Provide compliance guidance, NDA signing, and private deployment support
  • Deliver Python / Node.js / Go sample code and CI/test scripts
  • Transparent pricing: starting at $300, with pay-on-acceptance terms

Contact Us

To start a project or get a quote, visit our contact page and submit your target App name and requirements:

View Contact Information

Collaboration Process (Sample Timeline)

  1. Submit requirements (target App name + use cases + whether credentials exist).
  2. Protocol assessment and quoting (2–5 working days).
  3. Development and testing (3–10 working days, depending on complexity).
  4. Deliver documentation, sample code and test cases (1–2 working days).
  5. Go-live support and ongoing maintenance (on demand).

FAQ

What information do I need to provide?

Please provide the target App name (e.g., Cash App), specific requirements (transaction export, card notifications, Bitcoin orders), and whether you have developer credentials or a testing account.

How do we ensure compliance?

We operate only under client authorization or public APIs; we offer data minimization, consent logs, and compliance guidance, NDA if needed.
📱 Cash App Official Features Overview (Collapsed)

The following is a high-level overview of Cash App's core features, as reference for our integration and protocol assessment:

  • Send, spend, deposit and invest (stocks and Bitcoin) — supports P2P transfers, bank cards and direct deposits.
  • Loan products and overdraft protection — additional cash with overdraft protection where eligible.
  • Youth accounts (ages 13–17) with parental sponsorship and configurable controls.
  • Instant free P2P payments — via phone number, email, $Cashtag or QR code.
  • Custom Cash App Card (debit card), compatible with Apple Pay / Google Pay, with real-time notifications and 24/7 fraud monitoring.
  • Simplified banking services: no minimum balance and direct salary allocation to savings, stocks, or Bitcoin.
  • Deposits and savings: higher interest for recurring deposits over $300 per month with ATM reimbursement and overdraft coverage.
  • Commission-free investing and Bitcoin purchases: low-barrier access; investment risk; not a bank deposit.
  • Exclusive perks, pre-sale tickets and lifestyle discounts.
  • Customer support and corporate address (example; not attribution for this project): Block, Inc., 1955 Broadway, Suite 600, Oakland, CA 94612; customer service phone (example) (800) 969-1940.

Note: The above is public feature summary; integration will be implemented in compliance with client authorization and available API specifications.