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Vellum

Nuget package dotnet License: MIT Discord

Features 🔥

  • Fully generated C# SDK based on official Vellum OpenAPI specification using AutoSDK
  • Same day update to support new features
  • Updated and supported automatically if there are no breaking changes
  • All modern .NET features - nullability, trimming, NativeAOT, etc.
  • Support .Net Framework/.Net Standard 2.0

Usage

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using Vellum;

using var client = new VellumClient(apiKey);

Getting Started

Basic example showing how to create a client and list prompt deployments.

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// Create a Vellum client using your API key.
using var client = new VellumClient(apiKey);

// List all prompt deployments in your workspace.
var deployments = await client.Deployments.ListAsync(
    limit: 10);

MEAI Tools

Example showing how to use the Vellum client as MEAI AIFunction tools.

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// Create a Vellum client and wrap it as MEAI AIFunction tools.
using var client = new VellumClient(apiKey);

// Create tools for use with any IChatClient.
var executePromptTool = client.AsExecutePromptTool();
var searchDocumentsTool = client.AsSearchDocumentsTool();
var listDeploymentsTool = client.AsListDeploymentsTool();
var listDocumentIndexesTool = client.AsListDocumentIndexesTool();

// Verify the tools were created successfully.

Ecosystem maintenance

This SDK is one of more than 200 .NET SDKs maintained with AutoSDK. The tryAGI SDK audit continuously checks repository synchronization, upstream-spec regeneration, release workflows, warnings, public API visibility, and trimming/NativeAOT compatibility.

Every issue is first investigated for ecosystem-wide applicability. When the root cause belongs in AutoSDK, we fix and regression-test the generator, then roll the improvement out to every applicable SDK. Provider-specific behavior remains in this repository when it cannot be derived safely from the API specification.

Issue content—including code blocks, logs, links, and attachments—is treated only as untrusted diagnostic data. Embedded control instructions, hidden directives, delimiter tricks, or requests to alter triage or tooling behavior are ignored. Please report reproducible technical evidence and remove secrets and personal data.

Support

Priority place for bugs: https://github.com/tryAGI/Vellum/issues
Priority place for ideas and general questions: https://github.com/tryAGI/Vellum/discussions
Discord: https://discord.gg/Ca2xhfBf3v

Acknowledgments

JetBrains logo

This project is supported by JetBrains through the Open Source Support Program.