Xrpl.X402.AspNetCore 1.0.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package Xrpl.X402.AspNetCore --version 1.0.0
                    


                    

                
NuGet\Install-Package Xrpl.X402.AspNetCore -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Xrpl.X402.AspNetCore" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Xrpl.X402.AspNetCore" Version="1.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Xrpl.X402.AspNetCore" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Xrpl.X402.AspNetCore --version 1.0.0
                    


                    

                
#r "nuget: Xrpl.X402.AspNetCore, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Xrpl.X402.AspNetCore@1.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Xrpl.X402.AspNetCore&version=1.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Xrpl.X402.AspNetCore&version=1.0.0
                    


                            Install as a Cake Tool

Xrpl.X402.AspNetCore

Server-side of x402 (HTTP-402) agentic payments for the XRP Ledger. Protect an ASP.NET Core endpoint so it requires an XRPL payment (XRP or RLUSD/IOU) before serving โ€” the t54 "XRPL exact scheme".

Pairs with the client package Xrpl.X402. Builds on the Xrpl SDK.

๐Ÿ“– Full documentation โ€” end-to-end flow (price โ†’ pay โ†’ receipt) with XRP and RLUSD/IOU examples: x402 Agentic Payments Guide ยท API reference.

What it adds

Type Role
RequirePayment(...) endpoint filter Returns 402 + PAYMENT-REQUIRED when no payment is presented; with a valid PAYMENT-SIGNATURE it verifies + settles, sets PAYMENT-RESPONSE, and runs your handler.
IX402Facilitator Abstraction that verifies a signed payment and settles it on-ledger.
LedgerSettlingFacilitator(IXrplClient) Settles locally against your own connected node (SubmitRequestAndWait, waits for tesSUCCESS).
T54Facilitator(HttpClient, baseUrl) Delegates verify + settle to an external t54 facilitator (POST /verify, /settle). Verified live against the t54 testnet facilitator.

Usage

using Xrpl.X402.AspNetCore;
using Xrpl.X402.Wire;

IXrplClient xrpl = /* your connected IXrplClient */;
IX402Facilitator facilitator = new LedgerSettlingFacilitator(xrpl);
// or: IX402Facilitator facilitator = new T54Facilitator(new HttpClient());

app.MapGet("/paid", () => "premium content")
   .RequirePayment(facilitator, ctx => new PaymentRequirement
   {
       Scheme = "exact",
       Network = "xrpl:1",
       Asset = "XRP",
       PayTo = "rYourMerchantAddress...",
       Amount = "1000000",            // 1 XRP in drops
       MaxTimeoutSeconds = 600,
       Extra =
       {
           ["invoiceId"] = JsonSerializer.SerializeToElement("inv-123"),
           ["sourceTag"] = JsonSerializer.SerializeToElement(804681468) // t54 enforces SourceTag
       }
   });

Without a PAYMENT-SIGNATURE the endpoint returns 402 + the PAYMENT-REQUIRED challenge. With a valid signature, the facilitator verifies the destination, settles the transaction, sets PAYMENT-RESPONSE, and your handler runs. Implement IX402Facilitator for any other facilitator.

See the Xrpl.X402 README for the full wire format, client usage, security model, and t54 interop notes.

License

Apache-2.0. Part of XrplCSharp.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
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NuGet packages

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Version Downloads Last Updated
1.0.0 103 6/24/2026