mirror of
https://github.com/Piebald-AI/claude-code-system-prompts.git
synced 2026-05-30 13:45:23 +08:00
76 lines
1.9 KiB
Markdown
76 lines
1.9 KiB
Markdown
<!--
|
|
name: 'Data: Claude API reference — C#'
|
|
description: C# SDK reference including installation, client initialization, basic requests, streaming, and tool use
|
|
ccVersion: 2.1.51
|
|
-->
|
|
# Claude API — C#
|
|
|
|
> **Note:** The C# SDK is the official Anthropic SDK for C#. Tool use is supported via the Messages API. A class-annotation-based tool runner is not available; use raw tool definitions with JSON schema. The SDK also supports Microsoft.Extensions.AI IChatClient integration with function invocation.
|
|
|
|
## Installation
|
|
|
|
\`\`\`bash
|
|
dotnet add package Anthropic
|
|
\`\`\`
|
|
|
|
## Client Initialization
|
|
|
|
\`\`\`csharp
|
|
using Anthropic;
|
|
|
|
// Default (uses ANTHROPIC_API_KEY env var)
|
|
AnthropicClient client = new();
|
|
|
|
// Explicit API key (use environment variables — never hardcode keys)
|
|
AnthropicClient client = new() {
|
|
ApiKey = Environment.GetEnvironmentVariable("ANTHROPIC_API_KEY")
|
|
};
|
|
\`\`\`
|
|
|
|
---
|
|
|
|
## Basic Message Request
|
|
|
|
\`\`\`csharp
|
|
using Anthropic.Models.Messages;
|
|
|
|
var parameters = new MessageCreateParams
|
|
{
|
|
Model = Model.ClaudeOpus4_6,
|
|
MaxTokens = 1024,
|
|
Messages = [new() { Role = Role.User, Content = "What is the capital of France?" }]
|
|
};
|
|
var message = await client.Messages.Create(parameters);
|
|
Console.WriteLine(message);
|
|
\`\`\`
|
|
|
|
---
|
|
|
|
## Streaming
|
|
|
|
\`\`\`csharp
|
|
using Anthropic.Models.Messages;
|
|
|
|
var parameters = new MessageCreateParams
|
|
{
|
|
Model = Model.ClaudeOpus4_6,
|
|
MaxTokens = 1024,
|
|
Messages = [new() { Role = Role.User, Content = "Write a haiku" }]
|
|
};
|
|
|
|
await foreach (RawMessageStreamEvent streamEvent in client.Messages.CreateStreaming(parameters))
|
|
{
|
|
if (streamEvent.TryPickContentBlockDelta(out var delta) &&
|
|
delta.Delta.TryPickText(out var text))
|
|
{
|
|
Console.Write(text.Text);
|
|
}
|
|
}
|
|
\`\`\`
|
|
|
|
---
|
|
|
|
## Tool Use (Manual Loop)
|
|
|
|
The C# SDK supports raw tool definitions via JSON schema. See the [shared tool use concepts](../shared/tool-use-concepts.md) for the tool definition format and agentic loop pattern.
|