AgentTask Atlas

Guides · Claude Code

How to add an MCP server to Claude Code

Claude Code connects to MCP servers from its CLI. Remote servers use the HTTP transport (the recommended option for hosted servers); local servers run as a stdio process on your machine.

Steps summarize the official docs linked below, checked 2026-10-19. Client UIs change; if a menu name differs, the linked docs win.

  1. 1. Add a remote HTTP server

    Pass the transport, a name and the server URL. Example with the free, read-only AgentTask Atlas catalog server:

    claude mcp add --transport http agenttask-atlas https://agenttaskatlas.com/api/mcp

  2. 2. Add a server that needs a token

    If the server authenticates with a fixed token, pass it as a header. Servers that use OAuth instead are authenticated later from /mcp.

    claude mcp add --transport http secure-api https://api.example.com/mcp \
  --header "Authorization: Bearer your-token"

  3. 3. Add a local stdio server

    Everything after -- is the command that starts the server. Put environment variables with --env before the --.

    claude mcp add --env API_KEY=your-key --transport stdio example -- npx -y @example/mcp-server

  4. 4. Pick a scope

    local (default) = only you, only this project, stored in ~/.claude.json. project = shared with the team through .mcp.json at the project root. user = only you, all projects.

    claude mcp add --transport http agenttask-atlas --scope user https://agenttaskatlas.com/api/mcp

  5. 5. Or commit a .mcp.json

    For a team, add the entry to .mcp.json. A remote entry needs "type": "http": an entry with a url but no type is read as a stdio server and skipped.

    {
  "mcpServers": {
    "agenttask-atlas": {
      "type": "http",
      "url": "https://agenttaskatlas.com/api/mcp"
    }
  }
}

  6. 6. Check it connected

    claude mcp list shows a status per server (✔ Connected, ! Needs authentication, ✘ Failed to connect). Inside a session, /mcp shows the same and runs OAuth sign-in.

    claude mcp list
claude mcp get agenttask-atlas

Good to know

Sources

26 catalog entries with documented Claude Code setup

From the AgentTask Atlas catalog: entries whose official README or docs include setup instructions for Claude Code.

Ask the catalog from inside Claude Code: the AgentTask Atlas MCP server is free, read-only and needs no account.

Compare by task: Databases & SQL · Infra & deploy · Debugging & observability · Library docs & research · Frontend & UI · Docs & writing

⚠ No independent security audit: entries summarize official sources only. Review permissions and code before installing.