emem-signer

emem-signer is an MCP server for Claude Code from Vortx-AI/emem. Its token cost is not measured, scanned A, original, Apache-2.0.

An MCP server for signing operations, launched with Python and configured with a signing seed. MCP is a standard way for an agent to call an external tool.

In plain words
What is it for?
Use it when a configured agent needs to connect to the emem-signer service; the signing seed environment setting must be provided.
Why use it?
The description only identifies the server and its required configuration, so its specific signing jobs are not stated.

MCP server for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: listed in a Claude config.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the emem plugin — 19 skills, 2 MCP servers shipped together

One of 2 entries in .mcp.json upstream. Installing this one merges just its entry into your config; the other 1 are separate, each on its own page.

Good fit Use it when a configured agent needs to connect to the emem-signer service; the signing seed environment setting must be provided.

Compare 6 mcp servers from other repositories ↓

Installing this writes the configuration, not the program: `python3` runs a file from the repository, so clone it first and make the path in the command match where you put it.

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add Vortx-AI/emem
Claude Code
/plugin install emem

Installing this writes the configuration, not the program: `python3` runs a file from the repository, so clone it first and make the path in the command match where you put it.

Made for: Claude Code.

Or install emem, the plugin that ships this one along with the rest of its 19 skills, 2 MCP servers.

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 emem-signer

README.md
[![agentmods](https://agentmods.dev/badge/mcp/vortx-ai/emem/emem-emem-signer/github.svg)](https://agentmods.dev/mcp/vortx-ai/emem/emem-emem-signer)
Your own site
<a href="https://agentmods.dev/mcp/vortx-ai/emem/emem-emem-signer"><img src="https://agentmods.dev/badge/mcp/vortx-ai/emem/emem-emem-signer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for emem-signer

Your own site · 80×15
<a href="https://agentmods.dev/mcp/vortx-ai/emem/emem-emem-signer"><img src="https://agentmods.dev/badge/mcp/vortx-ai/emem/emem-emem-signer.svg" alt="Reviewed on agentmods" width="80" 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

emem-signer 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 today.

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.

plugins/emem/.mcp.json · 12 lines

What it actually says

{
  "emem-signer": {
    "type": "stdio",
    "command": "python3",
    "args": [
      "${CLAUDE_PLUGIN_ROOT}/signer/emem_signer.py"
    ],
    "env": {
      "EMEM_SIGNING_SEED_HEX": "${user_config.signing_seed_hex}"
    }
  }
}
Same file

What else .mcp.json configures

This page is one entry in a file that holds 2. Installing the file brings all of them; each is measured and scanned on its own page.

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. today First seen · 12 lines scan A 3142033297b7

Subscribe to this mod's changes

emem-signer is an MCP server published in the GitHub repository Vortx-AI/emem (71 stars, last pushed yesterday), 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 2026-10-19.