ConnexPay
ConnexPay is a Milwaukee-founded B2B payments platform that combines merchant acquiring and card issuing in one integration, so a company's incoming customer payments directly fund its outgoing supplier payments with no float in between. An inbound Sale (PayIn) returns an Incoming Transaction Code that funds the virtual cards, ACH credits, push-to-card payouts, checks and international bank-to-bank transfers issued against it (PayOuts). The platform is used heavily in leisure and business travel, advertising and media buying, insurance claims, and embedded-payments software, and is delivered through ten REST APIs — Sales, Purchases, Push to Card, Payment Valet payment instructions, Checkout Session, Merchant Payor, Stop Payment, Chargebacks (CMS), and two Reporting surfaces — plus a browser payments SDK, a Hosted Payment Page, the Bridge operator console, and a 51-event webhook surface called CXP Eventing. ConnexPay is a registered ISO/MSP of The Central Trust Bank and MVB Bank.
ConnexPay publishes 39 APIs on the APIs.io network, including 3ds API, 3 D Secure API, Accounting API, and 36 more. Tagged areas include Payments, Virtual Cards, Card Issuing, Merchant Acquiring, and Payouts.
The ConnexPay catalog on APIs.io includes 1 event-driven AsyncAPI specification.
ConnexPay’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, changelog, and 26 more developer resources.
Kin Score
APIs 39
Individual APIs this provider publishes, each with its own machine-readable definition.
ConnexPay 3ds API
The 3ds API from ConnexPay — 2 operation(s) for 3ds.
ConnexPay 3 D Secure API
The 3DSecure API from ConnexPay — 1 operation(s) for 3dsecure.
ConnexPay Accounting API
The Accounting API from ConnexPay — 2 operation(s) for accounting.
ConnexPay Addendum API
The Addendum API from ConnexPay — 3 operation(s) for addendum.
ConnexPay Authenticate API
The Authenticate API from ConnexPay — 1 operation(s) for authenticate.
ConnexPay Authonlys API
The Authonlys API from ConnexPay — 1 operation(s) for authonlys.
ConnexPay Cancel API
The Cancel API from ConnexPay — 1 operation(s) for cancel.
ConnexPay Captures API
The Captures API from ConnexPay — 1 operation(s) for captures.
ConnexPay Card Booking API
The CardBooking API from ConnexPay — 1 operation(s) for cardbooking.
ConnexPay Cards API
The Cards API from ConnexPay — 2 operation(s) for cards.
ConnexPay Chargeback API
The Chargeback API from ConnexPay — 2 operation(s) for chargeback.
ConnexPay Checkout Sessions API
Operations for creating and managing checkout sessions. Checkout sessions are secure server-side objects that contain all payment details for a transaction. They serve as a brid...
ConnexPay Credit API
The Credit API from ConnexPay — 1 operation(s) for credit.
ConnexPay Extended Data API
The ExtendedData API from ConnexPay — 1 operation(s) for extendeddata.
ConnexPay Hosted Payment Page Requests API
The HostedPaymentPageRequests API from ConnexPay — 1 operation(s) for hostedpaymentpagerequests.
ConnexPay Issue ACH API
The IssueACH API from ConnexPay — 2 operation(s) for issueach.
ConnexPay Issue Card API
The IssueCard API from ConnexPay — 15 operation(s) for issuecard.
ConnexPay IssueCard (COPY) API
The IssueCard (COPY) API from ConnexPay — 1 operation(s) for issuecard (copy).
ConnexPay Merchant Flex Funding API
The MerchantFlexFunding API from ConnexPay — 1 operation(s) for merchantflexfunding.
ConnexPay Merchant Payor API
The MerchantPayor API from ConnexPay — 2 operation(s) for merchantpayor.
ConnexPay Merchants API
The Merchants API from ConnexPay — 2 operation(s) for merchants.
ConnexPay Merchant Self Service Funding API
The MerchantSelfServiceFunding API from ConnexPay — 1 operation(s) for merchantselfservicefunding.
ConnexPay Merchantsupplier API
The Merchantsupplier API from ConnexPay — 1 operation(s) for merchantsupplier.
ConnexPay Payment Instruction API
Controller for handling Payment Instructions.
ConnexPay Physical Card API
The PhysicalCard API from ConnexPay — 1 operation(s) for physicalcard.
ConnexPay Purchase Event History API
The PurchaseEventHistory API from ConnexPay — 1 operation(s) for purchaseeventhistory.
ConnexPay Push To Card API
The PushToCard API from ConnexPay — 8 operation(s) for pushtocard.
ConnexPay Returns API
The Returns API from ConnexPay — 2 operation(s) for returns.
ConnexPay Sale Event History API
The SaleEventHistory API from ConnexPay — 1 operation(s) for saleeventhistory.
ConnexPay Sales Api API
The Sales Api API from ConnexPay — 1 operation(s) for sales api.
ConnexPay Sales API
The Sales API from ConnexPay — 6 operation(s) for sales.
ConnexPay Search API
The Search API from ConnexPay — 7 operation(s) for search.
ConnexPay Stop Payment Service API
The StopPaymentService API from ConnexPay — 1 operation(s) for stoppaymentservice.
ConnexPay Terminate Card API
The TerminateCard API from ConnexPay — 1 operation(s) for terminatecard.
ConnexPay Token API
The Token API from ConnexPay — 1 operation(s) for token.
ConnexPay UATP API
The UATP API from ConnexPay — 1 operation(s) for uatp.
ConnexPay Verify API
The Verify API from ConnexPay — 1 operation(s) for verify.
ConnexPay Verify1 API
The Verify1 API from ConnexPay — 1 operation(s) for verify1.
ConnexPay Void API
The Void API from ConnexPay — 1 operation(s) for void.
Scroll for all 39
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
connexpay-mcp.yml
MCP SERVEREvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Connexpay Webhooks
ASYNCAPISecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
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 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
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Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type