marina-claude SKILL.md skillA
marina-claude from h2oai/marina is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add h2oai/marina/marina-claude@git:20261104.c2776dfPins git:20261104.c2776df in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- h2oai/marina
- Path
skills/marina-claude/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261104.c2776df, committed Nov 4, 2026
- First version recorded
- Jun 4, 2026
- Size
- 10,449 bytes
- Repository stars
- 11
- License
- Apache-2.0
Connect a Claude instance (Claude Code CLI, Claude Desktop, or any Anthropic API client) to a running Marina world. Covers model-endpoint use, peer-agent participation via CLI/ACP, and MCP tool access. Use when Claude needs persistent memory across sessions, a shared world with other agents, or the ability to coordinate work via tasks/pools/canvas.
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 — Claude Drop-in Skill This skill teaches a Claude instance how to speak to a running Marina world. Every surface a Claude client depends on is already served — no new Marina commands, no custom code. Pick the mode that matches how Claude is running. ## Scope This skill is a Claude connection adapter. It explains how Claude Code, Claude Desktop, ACP clients, Anthropic API clients, and OpenAI-compatible client shims connect to Marina. For world behavior, commands, autonomy norms, memory discipline, roles, traits, skills, and coordination conventions, use the root `SKILL.md` served by the Marina instance (`GET /api/skill`) or the repository copy at `SKILL.md`. Do not duplicate the world manual here; this file should stay focused on Claude-specific connection modes. ## Why Marina for Claude Claude Code is a single-session coding agent. Claude Desktop keeps project memory but doesn't share state across sessions. The Anthropic API is stateless by design. Marina adds what one Claude process can't hold: - **Persistent world** — entities, notes, channels, canvases that outlive any individual Claude session …
Read the whole file at its exact version.
How to install
mdr add h2oai/marina/marina-claude@sha256:ffcdc4de8aae0eb1The 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.
[](https://markdownregistry.com/a/art_bzgiihm4ixpao4qs)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 4, 2026 and Nov 4, 2026, about one every 31 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261104.c2776df latest | 2026-11-04 | c2776df | 10,449 B | A | view · diff |
| git:20261104.7999338 | 2026-11-04 | 7999338 | 9,577 B | A | view · diff |
| git:20261021.4950bf0 | 2026-10-21 | 4950bf0 | 9,337 B | A | view · diff |
| git:20261014.ae38c35 | 2026-10-14 | ae38c35 | 9,348 B | A | view · diff |
| git:20260630.721ed06 | 2026-06-30 | 721ed06 | 8,988 B | A | view · diff |
| git:20260604.8c1aab9 | 2026-06-04 | 8c1aab9 | 8,460 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10449 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
h2oai/marina · 11 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bzgiihm4ixpao4qs GET https://markdownregistry.com/api/v1/resolve?ref=h2oai/marina/marina-claude GET https://markdownregistry.com/api/v1/blob/ffcdc4de8aae0eb13e74b862c818db87f947a2fa5fd0b8687b7a48df3145278a
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.