Cash App
Cash App is a consumer mobile-first financial services platform operated by Block, Inc. (formerly Square, Inc.), a publicly traded company. Cash App is not itself a chartered bank; its banking, card, and lending features are delivered through partner institutions (deposit accounts and the Cash App Card are issued by partner banks, historically Sutton Bank and Lincoln Savings Bank; brokerage and bitcoin services run through Block subsidiaries). Its public developer surface is a merchant/PSP payment-acceptance product, not a consumer-permissioned data-access API - Cash App Pay lets partners and payment service providers charge customers directly from their Cash App balance or linked funding source, and the Afterpay (Cash App Afterpay) buy-now-pay-later product is offered through the same portal. Block runs a real, public first-party developer portal at developers.cash.app (built on Fern) that publishes downloadable OpenAPI 3.1 specifications for the Cash App Pay Partner API (Customer Request, Network, and Management APIs on api.cash.app) and the Afterpay Global API (on global-api.afterpay.com). Consumer-side account data is reached by third parties through aggregators (e.g. Plaid) rather than a first-party FDX data-access API; no FDX participation or CFPB Section 1033 data-rights posture is documented in the developer portal.
Cash App publishes 19 APIs on the APIs.io network, including Add Cash App Pay To Your Site API, API Keys API, Balances API, and 16 more. Tagged areas include Financial-Services, Payments, United States, Fintech, and Neobank.
The Cash App catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Cash App’s developer surface includes API reference, authentication, documentation, support, getting-started guide, signup flow, changelog, and 38 more developer resources.
Kin Score
APIs 19
Individual APIs this provider publishes, each with its own machine-readable definition.
Cash App Add Cash App Pay To Your Site API
The Add Cash App Pay To Your Site API from Cash App — 0 operation(s) for add cash app pay to your site.
Cash App API Keys API
The apiKeys API from Cash App — 2 operation(s) for apikeys.
Cash App Balances API
The balances API from Cash App — 2 operation(s) for balances.
Cash App Billing Agreements (Deprecated) API
The Billing Agreements (Deprecated) API from Cash App — 0 operation(s) for billing agreements (deprecated).
Cash App Brands API
The brands API from Cash App — 2 operation(s) for brands.
Cash App Customer Request API
The Customer Request API API from Cash App — 0 operation(s) for customer request api.
Cash App Customers API
The customers API from Cash App — 5 operation(s) for customers.
Cash App App Default API
The App Default API from Cash App — 39 operation(s) for app default.
Cash App Disputes API
The disputes API from Cash App — 8 operation(s) for disputes.
Cash App Fee Plans API
The feePlans API from Cash App — 2 operation(s) for feeplans.
Cash App Grants Afterpay API
The Grants Afterpay API from Cash App — 0 operation(s) for grants afterpay.
Cash App Merchants API
The merchants API from Cash App — 2 operation(s) for merchants.
Cash App Network API
The Network API API from Cash App — 0 operation(s) for network api.
Cash App Payments API
The payments API from Cash App — 6 operation(s) for payments.
Cash App Payouts API
The payouts API from Cash App — 2 operation(s) for payouts.
Cash App Refunds API
The refunds API from Cash App — 5 operation(s) for refunds.
Cash App Request Chains API
The requestChains API from Cash App — 1 operation(s) for requestchains.
Cash App Requests API
The requests API from Cash App — 2 operation(s) for requests.
Cash App Webhooks API
The Webhooks API from Cash App — 3 operation(s) for webhooks.
Scroll for all 19
Postman Collections 12
Ready-to-run Postman collections for exercising this provider's APIs.
Checkouts
POSTMANConfiguration
POSTMANCustomer Request API
POSTMANDisputes
POSTMANGrants - Afterpay
POSTMANManagement API
POSTMANNetwork API
POSTMANOrders
POSTMANPayments
POSTMANService Status
POSTMANScroll for all 12
Open Collections 12
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Billing Agreements (Deprecated)
OPEN COLLECTIONCheckouts
OPEN COLLECTIONConfiguration
OPEN COLLECTIONCustomer Request API
OPEN COLLECTIONDisputes
OPEN COLLECTIONGrants - Afterpay
OPEN COLLECTIONAdd Cash App Pay to Your Site
OPEN COLLECTIONManagement API
OPEN COLLECTIONNetwork API
OPEN COLLECTIONOrders
OPEN COLLECTIONPayments
OPEN COLLECTIONService Status
OPEN COLLECTIONScroll for all 12
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Cash App MCP Server
MCP SERVEREvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Cash App Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 6
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
Scroll for all 8
Build 7
SDKs, sample code, and the tooling you integrate with
Scroll for all 7
Access & Security 6
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 5
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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