uv-sglang

Serve LLMs with RadixAttention prefix caching and structured generation.

1|Updated Feb 6, 2026
One-click install
npx skills add https://github.com/uv-xiao/pkbllm --skill uv-sglang
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: uv-sglang
Source: https://github.com/uv-xiao/pkbllm/tree/main/knowledge/ML/serving/sglang
Command: npx skills add https://github.com/uv-xiao/pkbllm --skill uv-sglang

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires sglang, torch, transformers, and includes references (resource) components.

What problem does it solve?

This Skill addresses the performance bottlenecks in serving Large Language Models (LLMs), particularly for repetitive tasks like agentic workflows and structured output generation, by significantly accelerating inference speed and improving throughput.

Core Features & Use Cases

  • High-Performance Serving: Offers 5x faster inference than vLLM through RadixAttention prefix caching.
  • Structured Generation: Excels at generating JSON, regex-constrained, or grammar-based outputs, crucial for agent tool calls and data parsing.
  • Agentic Workflows: Optimizes multi-turn conversations and agent interactions by reusing KV caches for system prompts and conversation history.
  • Use Case: Building an AI agent that repeatedly calls tools. SGLang's RadixAttention caches the tool definitions and system prompt, drastically reducing latency for subsequent tool calls compared to standard serving frameworks.

Quick Start

Launch the SGLang server with a Llama 3-8B model on port 30000.

Frequently Asked Questions about uv-sglang

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I speed up LLM serving for agentic workflows with repetitive system prompts?

You can speed up LLM serving for agentic workflows by using RadixAttention prefix caching, which reuses KV caches for system prompts and conversation history to drastically reduce latency for subsequent tool calls.

What is the best way to enforce structured generation for JSON outputs in LLM serving?

The best way to enforce structured generation is using a serving framework with built-in RadixAttention, which reliably generates JSON, regex-constrained, or grammar-based outputs crucial for agent tool calls and data parsing.

Can I use SGLang with my existing OpenAI-compatible API applications?

Yes, you can use SGLang with existing applications because it offers an OpenAI-compatible API for seamless integration, supporting various models and hardware for high-performance inference.

How does RadixAttention prefix caching improve multi-turn conversation latency?

RadixAttention prefix caching improves multi-turn conversation latency by automatically storing and reusing the KV cache of shared system prompts and conversation history across turns, avoiding redundant computation.

Do I need specific dependencies to run structured generation workflows with this framework?

Yes, you need specific dependencies including sglang, torch, and transformers to run structured generation workflows and launch the high-performance LLM serving server.