Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/commandosslabs/walrus-memory-mcp-plugin/setupnpx skills add CommandOSSLabs/walrus-memory-mcp-plugin --skill setupgit clone --depth 1 https://github.com/CommandOSSLabs/walrus-memory-mcp-pluginWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00055 | $0.00818 |
| Opus 5 | $0.00028 | $0.00409 |
| Sonnet 5 | $0.00011 | $0.00164 |
| Haiku 4.5 | $0.00006 | $0.00082 |
Grade A, and why
setup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Walrus Memory Setup
Use this skill to help a Claude Code user finish Walrus Memory setup with the published MCP package configured by this plugin.
What This Plugin Uses
This plugin uses the current Walrus Memory MCP package and delegate-key header authentication. It does not depend on the hosted Claude custom-connector OAuth flow.
The plugin starts this MCP server:
{
"mcpServers": {
"memwal": {
"command": "npx",
"args": ["-y", "@mysten-incubation/memwal-mcp", "--label", "Claude Code Plugin"]
}
}
}
Credentials are stored locally at ~/.memwal/credentials.json with file mode 0600.
Setup Flow
-
Check whether the MCP server is connected.
- Ask the user to run
/mcpif you cannot see MCP tool status. - The server name should be
memwal.
- Ask the user to run
-
If tools are available, call
memwal_health.- If it reports missing credentials, call
memwal_login. - If
memwal_loginis not available because the MCP server is not loaded, ask the user to restart Claude Code after installing/enabling the plugin.
- If it reports missing credentials, call
-
During login, the browser opens the Walrus Memory app.
- The user connects a Sui wallet.
- If no Walrus Memory account exists, the app walks the user through account creation.
- The app registers a delegate key labeled
Claude Code Plugin. - The local MCP package saves delegate-key credentials to
~/.memwal/credentials.json.
-
After login, verify with
memwal_health. -
Test end-to-end:
- Save a harmless setup fact with
memwal_remember. - Recall it with
memwal_recall.
- Save a harmless setup fact with
Troubleshooting
- If the browser flow finishes but Claude Code still says credentials are missing, restart Claude Code, then call
memwal_healthagain. This fallback remains required until the marketplace rollout verifies a published MCP release with live credential reload. - If the wallet already has 20 delegate keys, ask the user to open the Walrus Memory dashboard and revoke an unused key.
- If the user needs a clean login, call
memwal_logout, then callmemwal_loginagain. - If recall returns nothing for memories that should exist, call
memwal_restorewith the relevant namespace. - If Claude writes
MEMORY.mdinstead of callingmemwal_remember, the plugin hooks are not loaded, or Claude's built-in memory is winning. Confirm the plugin is enabled (/plugin) and restart Claude Code. MCP-only is not enough for automatic memory. - Show this block, get the user's go-ahead, then merge it into
~/.claude/CLAUDE.md. Create the file if needed. If<!-- memwal:start -->...<!-- memwal:end -->is already there, replace that span only. Never overwrite the rest of the file.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 75 lines · 55 tokens per session scan A c215f157c055
setup is a skill published in the GitHub repository CommandOSSLabs/walrus-memory-mcp-plugin (0 stars, last pushed 13d ago), licensed Apache-2.0. It adds 55 tokens to every session and 818 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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