sglang

Serve LLMs with RadixAttention prefix caching and structured JSON/regex outputs.

Updated Mar 16, 2026
One-click install
npx skills add https://github.com/arsity/scholar-tools --skill sglang-arsity
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: sglang
Source: https://github.com/arsity/scholar-tools/tree/main/vendor/ai-research-skills/12-inference-serving/sglang
Command: npx skills add https://github.com/arsity/scholar-tools --skill sglang-arsity

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

SGLang dramatically speeds up structured generation and agent workflows by automatically caching shared prefixes in prompts (RadixAttention), enabling reliable, high-throughput JSON/regex/grammar outputs for production-grade LLM serving.

Core Features & Use Cases

  • RadixAttention prefix caching accelerates repeated system prompts, few-shot examples, and multi-turn conversations.
  • Structured generation support outputs in JSON, regex-constrained, and grammar-based formats for deterministic data extraction and tool use.
  • OpenAI-compatible API & production deployment with batching, metrics, and multi-model support for scalable inference in real-world apps.

Quick Start

Start a server that serves an OpenAI-compatible API and returns structured outputs for tool-assisted workflows.

Frequently Asked Questions about sglang

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

FAQPage Schema
How do I serve LLMs with deterministic JSON output for production deployments?

RadixAttention prefix caching accelerates LLM serving by automatically caching shared prompt prefixes, such as system prompts and few-shot examples, to dramatically speed up repeated multi-turn agent workflows and conversations.

Can I use an OpenAI-compatible API for multi-model hosting with structured generation?

Yes, you can use an OpenAI-compatible API for multi-model hosting with structured generation, utilizing SGLang's production deployment features like batching and metrics to achieve scalable inference for real-world applications.

Do I need Python and PyTorch to set up structured LLM serving?

Yes, you need Python and PyTorch to set up structured LLM serving, as SGLang requires a Python environment with dependencies including torch and transformers to automate fast, structured generation and RadixAttention prefix caching.

What is the best way to speed up repeated system prompts in agent workflows?

The best way to speed up repeated system prompts in agent workflows is using RadixAttention prefix caching, which automatically caches shared prompt prefixes to enable high-throughput and reliable structured LLM serving.

Why does structured generation with regex constraints fail in high-throughput LLM serving?

Structured generation with regex constraints can fail in high-throughput LLM serving when shared prefixes are not cached, causing latency; SGLang solves this by automatically applying RadixAttention to maintain deterministic outputs at scale.