McpBuilder class

Builder that generates MCP server code from @Server and @Tool annotations.

This builder processes Dart files containing MCP annotations and generates:

  • .mcp.dart files containing the complete MCP server implementation
  • .mcp.json files containing tool metadata (if generateJson is true)

The builder supports two transport modes:

  • stdio: JSON-RPC over standard input/output (default)
  • http: HTTP server using the shelf package

For HTTP transport, the builder extracts port and address configuration from the @Server annotation to customize the server binding.

Example generated files:

  • my_server.mcp.dart - Complete MCP server with tool handlers
  • my_server.mcp.json - Tool metadata with JSON schemas

Constructors

McpBuilder()

Properties

buildExtensions → Map<String, List<String>>
Mapping from input file extension to output file extensions.
final
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildStep buildStep) → Future<void>
Generates the outputs for a given BuildStep.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited