ClaudeWrapper.Commands.Mcp (ClaudeWrapper v0.8.0)

MCP (Model Context Protocol) server management commands.

Usage

config = ClaudeWrapper.Config.new()

# List / inspect configured servers (raw text; the CLI has no JSON mode)
{:ok, servers_text} = ClaudeWrapper.Commands.Mcp.list(config)
{:ok, server_text} = ClaudeWrapper.Commands.Mcp.get(config, "sentry")

# Add an HTTP server with an auth header
{:ok, _} =
  ClaudeWrapper.Commands.Mcp.add(config, "sentry", "https://mcp.sentry.dev/mcp",
    [],
    transport: :http,
    header: ["Authorization: Bearer abc123"],
    scope: :user
  )

# Add a stdio server with env vars and subprocess args
{:ok, _} =
  ClaudeWrapper.Commands.Mcp.add(config, "my-server", "npx", [],
    env: %{"API_KEY" => "xxx"},
    server_args: ["my-mcp-server"]
  )

# Add from a JSON blob, prompting for the OAuth client secret
{:ok, _} =
  ClaudeWrapper.Commands.Mcp.add_json(config, "srv", ~s({"command":"npx"}),
    client_secret: true
  )

# Import from Claude Desktop (Mac and WSL only)
{:ok, _} = ClaudeWrapper.Commands.Mcp.add_from_desktop(config, nil, scope: :user)

# Run Claude Code itself as an MCP server
{:ok, _} = ClaudeWrapper.Commands.Mcp.serve(config, verbose: true)

Summary

Functions

add(config, name, command_or_url, command_args \\ [], opts \\ [])

Add an MCP server.

add_from_desktop(config, name \\ nil, opts \\ [])

Import MCP servers from Claude Desktop (Mac and WSL only).

add_json(config, name, json, opts \\ [])

Add an MCP server from a JSON configuration.

get(config, name, opts \\ [])

Get details for a specific MCP server.

list(config, opts \\ [])

List configured MCP servers.

remove(config, name, opts \\ [])

Remove an MCP server.

reset_project_choices(config)

Reset project choices for MCP servers.

serve(config, opts \\ [])

Start the Claude Code MCP server.

Types

scope()

@type scope() :: :local | :user | :project

transport()

@type transport() :: :stdio | :sse | :http

Functions

add(config, name, command_or_url, command_args \\ [], opts \\ [])

@spec add(ClaudeWrapper.Config.t(), String.t(), String.t(), [String.t()], keyword()) ::
  {:ok, String.t()} | {:error, term()}

Add an MCP server.

command_or_url is the stdio command (e.g. "npx") or the server URL for HTTP/SSE transports. Trailing command_args are passed through as positional arguments; prefer :server_args (which uses the CLI's -- separator) for flags that would otherwise be parsed by claude itself.

Options

:transport - Transport type (:stdio, :sse, or :http). Emits --transport. The CLI defaults to stdio when omitted.
:scope - Configuration scope (:local, :user, or :project). Emits --scope.
:env - Environment variables as a map or keyword list. Each pair emits -e KEY=value.
:header - WebSocket/HTTP headers for HTTP/SSE transports. Accepts a list of "Key: Value" strings or a map (each pair rendered "Key: Value"). Each header emits its own --header flag.
:server_args - Extra arguments for the server command, emitted after a -- separator so claude does not interpret them.
:callback_port - Fixed port for the OAuth callback (--callback-port).
:client_id - OAuth client ID for HTTP/SSE servers (--client-id).
:client_secret - Prompt for the OAuth client secret (--client-secret, boolean; or set the MCP_CLIENT_SECRET env var).

add_from_desktop(config, name \\ nil, opts \\ [])

@spec add_from_desktop(ClaudeWrapper.Config.t(), String.t() | nil, keyword()) ::
  {:ok, String.t()} | {:error, term()}

Import MCP servers from Claude Desktop (Mac and WSL only).

The installed CLI (claude mcp add-from-claude-desktop) takes no name argument; name is accepted for forward compatibility and appended as a positional only when non-nil.

Options

:scope - Configuration scope (:local, :user, or :project). Emits --scope.

add_json(config, name, json, opts \\ [])

@spec add_json(ClaudeWrapper.Config.t(), String.t(), String.t(), keyword()) ::
  {:ok, String.t()} | {:error, term()}

Add an MCP server from a JSON configuration.

Options

:scope - Configuration scope (:local, :user, or :project). Emits --scope.
:client_secret - Prompt for the OAuth client secret (--client-secret, boolean; or set the MCP_CLIENT_SECRET env var).

get(config, name, opts \\ [])

@spec get(ClaudeWrapper.Config.t(), String.t(), keyword()) ::
  {:ok, String.t()} | {:error, term()}

Get details for a specific MCP server.

claude mcp get emits human-readable text (it has no JSON mode), so this returns the raw, trimmed output rather than structured data.

Options

:scope - Configuration scope (:local, :user, or :project).

list(config, opts \\ [])

@spec list(
  ClaudeWrapper.Config.t(),
  keyword()
) :: {:ok, String.t()} | {:error, term()}

List configured MCP servers.

claude mcp list emits human-readable text (it has no JSON mode), so this returns the raw, trimmed output rather than structured data.

Options

:scope - Configuration scope (:local, :user, or :project).

remove(config, name, opts \\ [])

@spec remove(ClaudeWrapper.Config.t(), String.t(), keyword()) ::
  {:ok, String.t()} | {:error, term()}

Remove an MCP server.

Options

:scope - Configuration scope (:local, :user, or :project). When omitted the CLI removes the server from whichever scope it exists in.

reset_project_choices(config)

@spec reset_project_choices(ClaudeWrapper.Config.t()) ::
  {:ok, String.t()} | {:error, term()}

Reset project choices for MCP servers.

serve(config, opts \\ [])

@spec serve(
  ClaudeWrapper.Config.t(),
  keyword()
) :: {:ok, String.t()} | {:error, term()}

Start the Claude Code MCP server.

Wraps claude mcp serve, which exposes this Claude Code installation as an MCP server over stdio.

Options

:debug - Enable debug mode (--debug, boolean).
:verbose - Override the verbose-mode setting from config (--verbose, boolean).