CircleCI MCP Server vs Serena

A side-by-side comparison of two Developer Tools servers — tools, transport, auth, maintenance, and copy-paste config for each.

	CircleCI MCP Server Official CircleCI MCP server: inspect and fix failed builds, query pipelines in natural language. Verified stdio (local) API key TypeScript	Serena LSP-powered coding agent toolkit: semantic symbol search, references and structural edits. Verified stdio (local) No auth Python
Category	Developer Tools	Developer Tools
Language	TypeScript	Python
Transport	stdio (local)	stdio (local)
Auth	API key	None
GitHub stars	230	12k
Last commit	9 days ago	13 days ago
Verified
Actively maintained
Install	`npx -y @circleci/mcp-server-circleci`	`uvx --from git+https://github.com/oraios/serena serena start-mcp-server`
Repo	Open	Open

Verdict

Pick CircleCI MCP Server if you want the official, vendor-maintained server.

Pick Serena if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Add CircleCI MCP Server

Install / run

npx -y @circleci/mcp-server-circleci

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "circleci-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@circleci/mcp-server-circleci"
      ],
      "env": {
        "CIRCLECI_TOKEN": "<your-circleci-token>"
      }
    }
  }
}

Add Serena

Install / run

uvx --from git+https://github.com/oraios/serena serena start-mcp-server

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "serena": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/oraios/serena",
        "serena",
        "start-mcp-server"
      ]
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

FAQ

CircleCI MCP Server or Serena — which is better?

Pick CircleCI MCP Server if you want the official, vendor-maintained server. Pick Serena if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Can I use both CircleCI MCP Server and Serena?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do CircleCI MCP Server and Serena work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View CircleCI MCP Server →View Serena →More comparisons →