Ephemora Cell MCP - WASM Sandbox

8/8 attack vectors blocked · 424 tests · sub-millisecond warm execution Built for AI agents, MCP tools, plugins, code interpreters, and other untrusted workloads. It runs locally over stdio via the published package.

People who work with sandbox, security and wasi and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-17 · ★ 39 · #154 OF 204 MAINTAINED SECURITY · VERIFIED 2026-09-18

Apache-2.0 · Python servers · how we verify → /methodology

01 · Install Ephemora Cell MCP - WASM Sandbox

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add michaels1011-ephemora-cell -- uvx ephemora-cell

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "michaels1011-ephemora-cell": {
      "command": "uvx",
      "args": [
        "ephemora-cell"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-08-03 - young repo, little track record yet

license Apache-2.0 - declared in the repository

pypi package ephemora-cell - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.MichaelS1011 is GitHub-verified and matches the repo owner

03 · What Ephemora Cell MCP - WASM Sandbox can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.0.3 · 2026-09-17

Fixed · Black formatting for ephemora_cell/__init__.py hybrid wrapper (long line split). · Registry · MCP Registry 1.0.3 active (PyPI 1.0.3, server.json 1.0.3) · io.github.MichaelS1011/ephemora-cell-mcp 1.0.3 active

v1.0.2 · 2026-09-17

Added · MCP Registry publication as io.github.MichaelS1011/ephemora-cell-mcp (server.json, PyPI mcp-name in README). Published to registry.modelcontextprotocol.io (1.0.2 active). · GitHub Topics 11 -> 17 (wasmtime…

v1.0.1 · 2026-09-11

Release metadata and MCP surface hardening, published to PyPI. The 1.0.0 PyPI metadata publicly exposed a personal email that the repository no longer carries - this upload replaces it. · bash · pip install…

04 · Who maintains Ephemora Cell MCP - WASM Sandbox

Ephemora Cell MCP - WASM Sandbox is maintained by michaels1011. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository: github.com/michaels1011/ephemora-cell
website: https://github.com/MichaelS1011/ephemora-cell
category: security - ranked #154 of 204 actively-maintained security servers as of 2026-09-18.
release cadence: 4 releases in the last 90 days (latest 2026-09-17)
registry: io.github.MichaelS1011/ephemora-cell-mcp (active, first published 2026-09-17 · 2 versions)
packages: pypi:ephemora-cell

06 · Ephemora Cell MCP - WASM Sandbox FAQ

What is Ephemora Cell MCP - WASM Sandbox?

Is Ephemora Cell MCP - WASM Sandbox still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 4 releases in the last 90 days. We re-verify nightly.

How do I install Ephemora Cell MCP - WASM Sandbox?

Run `uvx ephemora-cell`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Ephemora Cell MCP - WASM Sandbox run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Ephemora Cell MCP - WASM Sandbox

Alternatives to Ephemora Cell MCP - WASM Sandbox

Maintained security servers if Ephemora Cell MCP - WASM Sandbox isn't the fit.

Pairs well with

Servers that cover what Ephemora Cell MCP - WASM Sandbox doesn't - only shown when the pairing reason fits the companion.

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