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.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Cash App the way a machine reads it — 50 machine-readable artifacts across 12 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Cash App scores 61.7/100 (strong), with a separate agent-readiness read of 48/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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How we profile Cash App
Each block below is one kind of artifact we hold for Cash App. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 19
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 19 ·
Postman Collections 12
A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.
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 within the panel for all 12 ·
Open Collections 12
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
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 within the panel for all 12 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
Cash App MCP Server
MCP SERVEREvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
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 — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Cash App — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
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 within the panel for all 8 ·
Build 7
SDKs, sample code, and the tooling you integrate with
Scroll within the panel 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
← All providers · Data indexed from github.com/api-evangelist/cash-app · machine-readable index on apis.io
This is an independent, third-party profile of Cash App, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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