sglang

Fast structured generation and serving for LLMs with RadixAttention prefix caching. Use for JSON/regex outputs, constrained decoding, agentic workflows with tool calls, or when you need 5× faster inference than vLLM with prefix sharing. Powers 300,000+ GPUs at xAI, AMD, NVIDIA, and LinkedIn.

Quality

82%

Does it follow best practices?

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Securityby

Critical

Do not install without reviewing

Quality

Content

65%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A thorough, highly actionable SGLang guide with excellent executable examples and well-signaled one-level references, but it is overlong and somewhat redundant — benchmark tables, model/hardware lists, and the RadixAttention explainer duplicate content that belongs in the existing reference files. Adding a brief server-health validation step and trimming inline detail would lift the weaker dimensions.

Suggestions

Trim the body to a lean overview: move the full benchmark tables, supported-models/hardware lists, and the RadixAttention 'how it works' explainer into the existing reference files (radix-attention.md, deployment.md) and link to them instead of inlining.

Reduce the structured-generation section to one canonical pattern inline and defer the additional regex/grammar/schema variants to structured-generation.md, since that reference already exists.

Add an explicit validation checkpoint to the quick-start workflow — e.g. curl the /health endpoint to confirm the server is ready before running inference — so the launch→infer sequence has a feedback step.

Dimension	Reasoning	Score
Conciseness	Mostly actionable code but ~430 lines with redundancy and explanation Claude partly already knows (the full RadixAttention 'how it works' walkthrough, benchmark tables, supported-models/hardware lists), so it could be tightened rather than being lean throughout.	2 / 3
Actionability	Provides extensive copy-paste-ready, executable guidance throughout — install commands, server launch flags, and complete @sgl.function code for inference, JSON/regex/grammar, agents, multi-turn, multi-modal, batching, and the OpenAI API.	3 / 3
Workflow Clarity	A clear install→launch→infer sequence exists in Quick start, but the body is organized as a feature catalog rather than a sequenced workflow and includes no validation checkpoints or feedback loops.	2 / 3
Progressive Disclosure	References are real, clearly signaled, and one level deep (structured-generation.md, radix-attention.md, deployment.md), but the body is overlong with inline content — full benchmark tables, model/hardware lists, and a complete RadixAttention explainer — that overlaps the reference files and should be split out.	2 / 3
	Total	9 / 12 Passed

Description

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, third-person description that cleanly answers what the skill does and when to use it with concrete, natural trigger terms and a distinct niche. The trailing social-proof line ('Powers 300,000+ GPUs at xAI, AMD, NVIDIA, and LinkedIn') is mildly promotional but does not undermine the otherwise precise guidance.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete actions — 'structured generation and serving', 'JSON/regex outputs, constrained decoding, agentic workflows with tool calls' — matching the score-3 anchor of several specific concrete actions rather than a single domain+action.	3 / 3
Completeness	Explicitly states both what ('Fast structured generation and serving for LLMs with RadixAttention prefix caching') and when via an explicit 'Use for ...' trigger clause, satisfying the score-3 anchor.	3 / 3
Trigger Term Quality	Covers natural developer terms users would say — 'JSON/regex outputs', 'tool calls', 'agentic workflows', 'faster inference than vLLM' — with good breadth of common variations.	3 / 3
Distinctiveness Conflict Risk	A clear niche (SGLang + RadixAttention prefix caching) with distinct triggers (constrained decoding, agentic tool calls, faster-than-vLLM prefix sharing) unlikely to fire for unrelated skills.	3 / 3
	Total	12 / 12 Passed

Validation

93%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: Orchestra-Research/AI-Research-SKILLs
Path: 12-inference-serving/sglang/SKILL.md
Commit: 773a529

Reviewed: about 5 hours ago

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