# Zed Ejentum Mcp

> Zed editor extension wrapping the Ejentum MCP server. 8 cognitive operations (4 harnesses × dynamic + adaptive) available to Zed's agent.

- **Type:** MCP server
- **Install:** `agentstack add mcp-ejentum-zed-ejentum-mcp`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [ejentum](https://agentstack.voostack.com/s/ejentum)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [ejentum](https://github.com/ejentum)
- **Source:** https://github.com/ejentum/zed-ejentum-mcp
- **Website:** https://ejentum.com

## Install

```sh
agentstack add mcp-ejentum-zed-ejentum-mcp
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Ejentum context server for Zed

A [Zed](https://zed.dev) extension that exposes the [Ejentum Reasoning Harness](https://github.com/ejentum/ejentum-mcp) as an MCP context server. Ejentum is a library of 679 cognitive operations engineered in natural language, organized across four harnesses. Each harness call retrieves a task-matched scaffold rather than serving a fixed template: a named failure pattern, an executable procedure, suppression vectors that block the obvious shortcut, and a falsification test for self-verification. The assistant ingests the scaffold and writes from it, addressing attention decay, sycophantic collapse, hallucination drift, and reasoning decay.

Four tools are exposed:

- `reasoning` for analytical, diagnostic, planning, multi-step questions
- `code` for codegen, refactor, review, debugging, architecture choices
- `anti-deception` when the prompt pressures the assistant to validate, certify, or soften an honest assessment
- `memory` for sharpening an observation already formed about cross-turn drift

## Install

Once published, install through the Zed extensions panel (`cmd+shift+x` / `ctrl+shift+x`).

## Configure

Add your Ejentum API key to Zed settings:

```jsonc
{
  "context_servers": {
    "ejentum-mcp": {
      "settings": {
        "ejentum_api_key": "YOUR_KEY_HERE"
      }
    }
  }
}
```

Free tier (30-day trial, no card) at [ejentum.com/pricing](https://ejentum.com/pricing).

## Hosted alternative

This extension bundles the `ejentum-mcp` npm package and runs it as a stdio subprocess inside Zed. If you'd rather avoid the local subprocess (no npx install, no Node version pinning), the same four harness tools are also hosted at `https://api.ejentum.com/mcp` with Bearer auth via your `EJENTUM_API_KEY`. Most Zed users will prefer this extension (tighter integration, no extra MCP-client configuration needed); the hosted endpoint is documented here for users who want to route through Zed's HTTP-capable MCP support, or who run Zed alongside other clients (n8n, custom HTTP-MCP agents) sharing one key.

## License

MIT.

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [ejentum](https://github.com/ejentum)
- **Source:** [ejentum/zed-ejentum-mcp](https://github.com/ejentum/zed-ejentum-mcp)
- **License:** MIT
- **Homepage:** https://ejentum.com

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** yes
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-ejentum-zed-ejentum-mcp
- Seller: https://agentstack.voostack.com/s/ejentum
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.