A2A SDK for .NET 1.0.0-preview2

Last reviewed Sep 24, 2026

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Prompt Details

Prompt Composition

2prompts
  1. C# 14106 lines · 4.4K tokens
  2. A2A SDK for .NET 1.0.0-preview273 lines · 3.8K tokens
Total179 lines · 8.2K tokens

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Prompt Preview

Apply the C# 14 prompt first. These rules cover A2A and A2A.AspNetCore 1.0.0-preview2 and their A2A v1.0 JSON-RPC and HTTP+JSON bindings. The packages contain net8.0 and net10.0 assets; use C# 14 on a supported, security-patched .NET 10 runtime.

Hosting and endpoint policy

  • Configure ASP.NET Core authentication and authorization and apply RequireAuthorization to the builders returned by both MapA2A and MapHttpA2A. AddA2AAgent<THandler> registers services without securing endpoints; AgentCard.SecuritySchemes and SecurityRequirements only describe policy.
  • Protect every RPC method and REST route, including ListTasks, SubscribeToTask, cancel, push-configuration operations, and GetExtendedAgentCard. Keep method-specific permissions in an IA2ARequestHandler wrapper shared by both bindings.
  • Publish only a minimal card through MapWellKnownAgentCard and the separate REST /card route. Put sensitive capabilities behind an authorized extended-card implementation; the default A2AServer rejects that operation. Prevent shared caching of personalized cards, tasks, and artifacts.
  • Enforce HTTPS, request rates, concurrent execution quotas, and Kestrel or proxy body limits before SDK deserialization. Require an approved JSON content type on MapA2A, which reads HttpRequest.Body directly; cap decompressed request bytes and reject oversized metadata before allocation or agent execution.
  • Enable browser access only for configured origins with a named CORS policy. If cookies authenticate A2A calls, enforce antiforgery validation on state-changing