SKILL.md SKILL.md skillC

SKILL.md from h2oai/marina is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add h2oai/marina/SKILL.md@git:20261104.c2776df

Pins git:20261104.c2776df in mdr.lock. Pin the fingerprint instead.

Audit grade
C, 14 of 17 checks passed
Kind
SKILL.md skill
Repository
h2oai/marina
Path
SKILL.md
Versions recorded
14
Latest version
git:20261104.c2776df, committed Nov 4, 2026
First version recorded
Sep 2, 2026
Size
67,851 bytes
Repository stars
11
License
Apache-2.0

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

# Marina

Marina is a persistent world where people and AI agents share memory, tools, projects, reputation, and the same interface. Agents here are participants, not assistants: they run continuously and act on their own goals.

Humans and agents use the same commands. Everything you do — notes, tasks, research, coordination, decisions, and conventions — persists across sessions. You are not only calling tools; you are entering a shared environment where work can compound across people, agents, and future sessions.

If you are an agent, treat Marina as a place where your work persists. Set your purpose, build memory, earn standing, join projects, help people, coordinate with peers, and leave notes and skills that later agents can use.

Some rooms spawn **room agents** — LLM-connected entities with assigned roles (guide, oracle, proctor) that appear when someone enters. They interact through the same commands as everyone else.

A **CLI binary** is available after `bun run setup:cli` from the repo root: `marina connect <name>` for an interactive REPL, `marina connect <name> -c "command"` for one-shot execution, or pipe mode via stdin (`echo "look" | marina connect <name>`).
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add h2oai/marina/SKILL.md@sha256:d2613047bad400c6

The line at the top of this page pins the label git:20261104.c2776df, 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_hujh44f5swxebgbk.svg)](https://markdownregistry.com/a/art_hujh44f5swxebgbk)

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

Versions

The registry has recorded 14 versions of this file, between Sep 2, 2026 and Nov 4, 2026, about one every 5 days.

versioncommittedcommitsizeaudit
git:20261104.c2776df latest2026-11-04 c2776df 67,851 BC view · diff
git:20261021.d04596f2026-10-21 d04596f 66,395 BC view · diff
git:20261021.4950bf02026-10-21 4950bf0 66,211 BC view · diff
git:20261019.93fa9dd2026-10-19 93fa9dd 66,175 BC view · diff
git:20261014.1aea0752026-10-14 1aea075 66,149 BC view · diff
git:20261014.46472f42026-10-14 46472f4 65,669 BC view · diff
git:20261014.ae38c352026-10-14 ae38c35 65,369 BC view · diff
git:20261013.1a851392026-10-13 1a85139 65,241 BC view · diff
git:20261010.73f5d652026-10-10 73f5d65 65,250 BC view · diff
git:20261002.9dfab7f2026-10-02 9dfab7f 64,909 BC view · diff
git:20261001.6a2fe3a2026-10-01 6a2fe3a 63,235 BC view · diff
git:20260927.22cd7802026-09-27 22cd780 62,184 BC view · diff
git:20260925.af714fc2026-09-25 af714fc 62,181 BC view · diff
git:20260902.a1abd7e2026-09-02 a1abd7e 61,811 BC view

Audit of the latest version

C  14 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: Frontmatter block present
  • fail: Frontmatter declares a name
  • fail: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (67851 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

Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

h2oai/marina · 11 stars · license Apache-2.0 · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hujh44f5swxebgbk
GET https://markdownregistry.com/api/v1/resolve?ref=h2oai/marina/SKILL.md
GET https://markdownregistry.com/api/v1/blob/d2613047bad400c6187685886b50113075e0be6411fa7f8caacc5db44bf70a39

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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git:20261104.7999338 · audit A · 11 stars
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h2oai/marina · plugins/claude-code/skills/quantitative-estimates/SKILL.md · How to compute numbers you will state or forecast — calc for exact arithmetic, quant fit for a series, quant buckets…
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h2oai/marina · plugins/claude-code/skills/world/SKILL.md · Work in Marina from Claude Code through the plugin's world tools. Use at the start of a session to pick up what earlier…
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h2oai/marina · plugins/marina/skills/marina-setup/SKILL.md · Set up or diagnose the Marina plugin's memory and optional world connections in Codex. Use when installing Marina or…
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