Loopback vs Codemcp

A side-by-side look at the Loopback and Codemcp MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Loopback logoLoopbackCoding Agents · Local subprocess (stdio)Feedback bus for coding agents: pin feedback on any web app, an agent fixes it, the pin turns green41FairAuth: not declaredCodemcp logoCodemcpCoding Agents · Local subprocess (stdio)Coding agent with basic read, write and command line tools.44FairAuth: no auth required

Verdict: choose Loopback for coding agents work as a local process; choose Codemcp for coding agents as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Loopback logoChoose Loopback when

  • You need dedicated capabilities in the Coding Agents domain.
  • You prefer a local stdio subprocess transport.
Explore Loopback

Codemcp logoChoose Codemcp when

  • You need dedicated capabilities in the Coding Agents domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
Explore Codemcp

Feature & specification comparison

Rows where the two servers differ are marked.

SpecLoopback logoLoopbackCodemcp logoCodemcp
CategoryCoding AgentsCoding Agents
Quality signal41/100 · Fair44/100 · Fair
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNo auth required
PricingNot declaredFree
Required env varsNone listedNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars01,605
Directory activity 0 views 0 installs 0 upvotes 6 views 0 installs 0 upvotes
ToolsNot listedNot listed

Tools & capabilities

Loopback tools

No tool names declared yet. Check the project README from the listing page.

Codemcp tools

No tool names declared yet. Check the project README from the listing page.

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Loopback

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "loopback": {
      "command": "npx",
      "args": [
        "-y",
        "loopback-mcp-server"
      ]
    }
  }
}

Codemcp

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "ezyang-codemcp": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/ezyang/codemcp@prod",
        "codemcp"
      ]
    }
  }
}

Frequently asked questions

Loopback is categorized under Coding Agents and uses a local stdio subprocess. Codemcp belongs to Coding Agents and uses a local stdio subprocess. Pick Loopback for coding agents work and Codemcp for coding agents.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Loopback has no declared pricing — check the project's own site. Codemcp is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add loopback and ezyang-codemcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Loopback has a quality signal of 41/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. Codemcp has 44/100 (Fair) with 6 views, 0 installs and 1,605 GitHub stars.