sglang-hicache SKILL.md skillA

sglang-hicache from air-gapped/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add air-gapped/skills/sglang-hicache@git:20261027.42d4297

Pins git:20261027.42d4297 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
air-gapped/skills
Path
.claude/skills/sglang-hicache/SKILL.md
Versions recorded
11
Latest version
git:20261027.42d4297, committed Oct 27, 2026
First version recorded
Sep 15, 2026
Size
30,164 bytes
Repository stars
6
License
MIT

SGLang HiCache (hierarchical KV cache) — three-tier prefix cache: GPU HBM (L1) → pinned host DRAM (L2) → distributed L3 (Mooncake / 3FS / NIXL / AIBrix / EIC / SiMM / file / LMCache). Covers `--enable-hierarchical-cache`, all `--hicache-*` flags, write policies, page_first* layouts, prefetch policy (best_effort / wait_complete / timeout), per-rank sizing, MHA / MLA / DSA / Mamba / SWA support matrix (SWA + 3FS hybrid shipped in v0.5.11), runtime attach/detach HTTP admin, and auto-rewrite…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# SGLang HiCache — hierarchical KV cache

Target audience: operators running SGLang on H100/H200/H20/B200-class datacenter GPUs in production, especially long-context agentic workloads (coding agents, RAG, multi-turn chat) with strong prefix locality.

## Why this matters

Long-context inference is almost always KV-cache bound, not compute bound. HiCache extends effective KV capacity beyond HBM through pinned host DRAM (L2) and an optional distributed L3 (Mooncake / 3FS / NIXL / AIBrix / EIC / SiMM / file). Reported gains: TTFT –56% / throughput ×2 (Novita Qwen3-Coder-480B + 3FS), TTFT –84% on cache hits (Ant Group DeepSeek-R1-671B + Mooncake) — see [LMSYS blog 2025-09-10](https://www.lmsys.org/blog/2025-09-10-sglang-hicache/). LMSYS's headline "up to 6× / up to 80%" is uncited — trust the deployment-specific numbers.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add air-gapped/skills/sglang-hicache@sha256:75a0b4f8436aa225

The line at the top of this page pins the label git:20261027.42d4297, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_vu3e5jjlj4q4io6f.svg)](https://markdownregistry.com/a/art_vu3e5jjlj4q4io6f)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 11 versions of this file, between Sep 15, 2026 and Oct 27, 2026, about one every 4 days.

versioncommittedcommitsizeaudit
git:20261027.42d4297 latest2026-10-27 42d4297 30,164 BA view · diff
git:20261027.37968272026-10-27 3796827 30,076 BA view · diff
git:20261027.78212f82026-10-27 78212f8 30,076 BA view · diff
git:20261027.cd7fe1c2026-10-27 cd7fe1c 29,820 BA view · diff
git:20261027.d19acd52026-10-27 d19acd5 29,698 BA view · diff
git:20260922.5e8f5092026-09-22 5e8f509 28,175 BA view · diff
git:20260915.300ba482026-09-15 300ba48 28,128 BA view · diff
git:20260915.55466692026-09-15 5546669 27,969 BA view · diff
git:20260915.802a7712026-09-15 802a771 27,399 BA view · diff
git:20260915.b2dd0a62026-09-15 b2dd0a6 27,355 BA view · diff
git:20260915.c2184852026-09-15 c218485 25,522 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (30164 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

air-gapped/skills · 6 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_vu3e5jjlj4q4io6f
GET https://markdownregistry.com/api/v1/resolve?ref=air-gapped/skills/sglang-hicache
GET https://markdownregistry.com/api/v1/blob/75a0b4f8436aa22573267e2d2f3a3cca24cca3e904ee6621877463d24479f57e

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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