MCP

MCP (Model Context Protocol) servers extend agents with tools and external context.

Configuring MCP servers

The HTTP config endpoints let you store/retrieve MCP server configs by directory + name.

// Create MCP config
await sdk.setMcpConfig(
  {
    directory: "/workspace",
    mcpName: "github",
  },
  {
    type: "remote",
    url: "https://example.com/mcp",
  },
);

// Create a session using the configured MCP servers
const session = await sdk.createSession({
  agent: "claude",
  cwd: "/workspace",
});

await session.prompt([
  { type: "text", text: "Use available MCP servers to help with this task." },
]);

// List MCP configs
const config = await sdk.getMcpConfig({
  directory: "/workspace",
  mcpName: "github",
});

console.log(config.type);

// Delete MCP config
await sdk.deleteMcpConfig({
  directory: "/workspace",
  mcpName: "github",
});

Config fields

Local server

Field	Description
type	local
command	executable path
args	array of CLI args
env	environment variable map
cwd	working directory
enabled	enable/disable server
timeoutMs	timeout override

Remote server

Field	Description
type	remote
url	MCP server URL
transport	http or sse
headers	static headers map
bearerTokenEnvVar	env var name to inject in auth header
envHeaders	header name to env var map
oauth	optional OAuth config object
enabled	enable/disable server
timeoutMs	timeout override

Custom MCP servers

To bundle and upload your own MCP server into the sandbox, see Custom Tools.