memwal

memwal is an MCP server for Claude Code from MystenLabs/MemWal. Its token cost is not measured, scanned A, original, Apache-2.0.

A local bridge that connects coding tools such as Cursor and Claude Code to the Walrus Memory service. It runs as a small command-line server and uses a browser-based wallet sign-in the first time.

In plain words
What is it for?
Use it to configure the Walrus Memory connection through the provided npm package and run it locally over the tool's standard input and output.
Why use it?
It provides a way for supported coding tools to communicate with that memory service without requiring a separate desktop application. The input does not explain what kinds of memories the service stores.

MCP server for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: listed in a Claude config.

Part of the memwal plugin — 3 hooks, 1 MCP server shipped together

Good fit Use it to configure the Walrus Memory connection through the provided npm package and run it locally over the tool's standard input and output.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/mystenlabs/memwal/plugin-memwal
Install

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.

Clone the repo
git clone --depth 1 https://github.com/MystenLabs/MemWal

Made for: Claude Code.

Or install memwal, the plugin that ships this one along with the rest of its 3 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for memwal

README.md
[![agentmods](https://agentmods.dev/badge/mcp/mystenlabs/memwal/plugin-memwal.svg)](https://agentmods.dev/mcp/mystenlabs/memwal/plugin-memwal)
Your own site
<a href="https://agentmods.dev/mcp/mystenlabs/memwal/plugin-memwal"><img src="https://agentmods.dev/badge/mcp/mystenlabs/memwal/plugin-memwal.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

memwal 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 2d ago.

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.

packages/mcp/plugin/.mcp.json · 9 lines

What it actually says

{
  "memwal": {
    "command": "npx",
    "args": [
      "-y",
      "@mysten-incubation/memwal-mcp"
    ]
  }
}
Changes

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.

  1. 2d ago First seen · 9 lines scan A 6a22dc9a8e7a

Subscribe to this mod's changes

memwal is an MCP server published in the GitHub repository MystenLabs/MemWal (90 stars, last pushed today), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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 2026-09-04.