dsh-mcp-manager

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Manage MCP servers right from the DeepSeek Harness Web settings page — add, edit, enable/disable, reconnect and delete servers at runtime, with live status, automatic reconnect and config-file hot sync.

Features

• Web settings UI — a dedicated "MCP Server Manager" page: server cards with live status, an add/edit form, and two-step delete protection.
• Runtime connections — servers connect/disconnect on the fly; tools are registered globally as mcp__<serverName>__<tool> for every session.
• Live status — reachability probing so a closed server shows offline instead of a stale "connected"; a stuck connection times out after 30 s.
• Auto-reconnect — a failed initial connect retries with exponential backoff (3 s → 60 s); pressing refresh retries immediately.
• Enable/disable — switch a server off to disconnect and unload its tools; switch it on to reconnect.
• Config file hot sync — $DSH_HOME/mcp-servers.json is watched; external edits take effect within ~1 s, no restart needed.
• Themes & i18n — follows DSH light/dark mode (and --dsw-alias-* token overrides from appearance plugins); UI ships in 简体中文 / English.

Screenshot

Install

For humans

Option 1 — from npm (easiest):

dsh plugin --profile web add dsh-mcp-manager

Option 2 — from source:

1. Clone and build:

   git clone https://github.com/Nichts0v0/dsh-mcp-manager.git
   cd dsh-mcp-manager && npm install      # the prepare script builds lib/ automatically

2. Make the package resolvable from the profile (pick one):

   • Run from the folder that contains the clone (no absolute path needed):

     dsh plugin --profile web add ./dsh-mcp-manager

     This installs the package as a plain pnpm dependency (this package has no dsh.bundle layer), which only makes it resolvable — you still need step 3 to mount the plugin row.

   • Or symlink the repository directory itself into the profile's node_modules (avoid copying, which would drag in dev node_modules):

     • Windows: mklink /J "%DSH_HOME%\profiles\web\node_modules\dsh-mcp-manager" <path-to-clone> — replace <path-to-clone> with your local clone path
     • macOS/Linux: ln -s <path-to-clone> $DSH_HOME/profiles/web/node_modules/dsh-mcp-manager

Then, whichever option — mount the plugin row in $DSH_HOME/profiles/web/cordis.patch.yml:

- insert:
    - id: mcp-manager
      name: dsh-mcp-manager

Restart dsh web and hard-refresh the browser page (Ctrl+Shift+R) so the new __DSH_BOOT__ loads, then open Settings → MCP Server Manager and add your first server.

Note: hot reload of cordis.patch.yml is disabled on the Web surface (DSH's shared HMR row is off), so configuration changes need a restart.

For AI agents

Follow every step, in order:

1. Read this README in full (especially Features, Known limitations, and this install section).

2. Install the package (npm is preferred): run dsh plugin --profile <profile> add dsh-mcp-manager in the profile you use (or npm install dsh-mcp-manager in $DSH_HOME/profiles/<profile> and use Option 2 below for the file layout).

   • Build/source fallback: clone this repo, cd dsh-mcp-manager, run npm install --ignore-scripts && npm run build (produces self-contained lib/index.js + lib/client.js; zero runtime dependencies), then link the folder into $DSH_HOME/profiles/<profile>/node_modules/dsh-mcp-manager (directory junction on Windows, symlink on POSIX).

3. Mount the plugin row: append to $DSH_HOME/profiles/<profile>/cordis.patch.yml:

   - insert:
       - id: mcp-manager
         name: dsh-mcp-manager

4. Restart dsh web (Web-surface config hot reload is disabled) and tell the user to hard-refresh the browser so the settings page shows the new section.

5. Verify: GET http://127.0.0.1:3080/mcp-manager/api/health must return {"ok":true,"name":"mcp-manager","version":"<x.y.z>",...}.

Usage

Open Settings → MCP Server Manager:

• Server cards show the name, transport, status badge and endpoint; disabled cards are dimmed.
• Enable/disable switch — disabling disconnects immediately and unloads the server's tools.
• Reconnect — waits for the connection result and refreshes automatically (configurable wait, default 15 s).
• Edit — change transport / URL / command / headers (serverName is immutable); saving hot-reconfigures the live connection.
• Delete — lives at the top of the edit page, behind a two-step confirm (3 s window).
• Add — streamable-http (URL + optional headers) or stdio (command + args), with a configurable connection-wait timeout.

Statuses

Configuration file

$DSH_HOME/mcp-servers.json — shared by every profile and session:

{
  "version": 1,
  "servers": [
    { "serverName": "my-server", "transport": "streamable-http", "url": "http://127.0.0.1:8080/mcp", "enabled": true }
  ]
}

The file is watched live: manual edits (add / remove / change / enable) take effect within ~1 s; POST /mcp-manager/api/reload triggers it on demand.

HTTP API

Security

The /mcp-manager/* API can start stdio servers — i.e. execute arbitrary commands — so it is access-controlled:

• Optional access token. Set a top-level token in $DSH_HOME/mcp-servers.json:

  { "version": 1, "token": "use-a-random-long-string", "servers": [] }

  Generate one with node -e "console.log(require('crypto').randomBytes(24).toString('hex'))". When set, every request must carry Authorization: Bearer <token> (all endpoints, including health):

  curl -H "Authorization: Bearer <token>" http://127.0.0.1:3080/mcp-manager/api/servers

  The settings page shows an "Access token" field — enter it there once (stored locally in the browser) and it is sent automatically.

• Network-exposure guard. When dsh web binds to a non-loopback address (--host 0.0.0.0) and no token is configured, the manager logs a loud error and *rejects all `/mcp-manager/` requests** (403) until a token is set and dsh is restarted. Loopback-only + no token stays fully open, matching the single-user local posture.

• Token comparison is timing-safe (crypto.timingSafeEqual).

• The token is stored in plaintext in mcp-servers.json — protect that file (same trust level as the DSH credentials store).

Development

npm install      # build-only devDependencies; prepare auto-builds
npm run build    # esbuild: lib/index.js (host, fully bundled) + lib/client.js (browser)
npm run watch    # watch the client bundle (works with dsh-client-hmr)

Publishing: bump version in package.json, then npm publish (the prepare script builds lib/ automatically before packing; the package ships lib/ + both READMEs + LICENSE).

No runtime dependencies: the host half inlines @deepseek-ai/dsh-mcp-client, the MCP SDK and cross-spawn; the browser half is a closure-factory bundle served by DSH's client module system.

Known limitations

• Initial failure retries with backoff, not instantly — failOnStartupError is on, so a failed first connect shows error and retries up to every 60 s; once connected, mcp-client's own reconnect handles drops.
• Reachability probing is HTTP-level — a GET with a 2.5 s timeout for streamable-http servers (any HTTP response counts as reachable); stdio servers are not probed.
• Tools only — MCP Resources/Prompts are not bridged (same as the official mcp-client).
• Auth is token-only, loopback-by-default — /mcp-manager/* has no built-in user accounts; use the optional token (see Security) before exposing --host 0.0.0.0 (stdio servers execute arbitrary commands).
• Some MCP servers allow only one active client (e.g. Godot MCP) — a second connection is rejected until the first is released.

License

MIT