What protocol versions does MCP Server support?
It supports four revisions: 2024-11-05 (original), 2025-03-26 (earlier 2025 revision), 2025-06-18 (adds elicitation, structured tool output, OAuth), and 2025-11-25 (adds icons, sampling tool calling).
MCP Server
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Basic information
About MCP Server
No overview available yet
MCP Server config
No standard config provided
This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.
RepositoryMCP Server tools
Tool list not available yet
This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.
We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.
Overview
What is MCP Server?
MCP Server is a Dart plugin for implementing Model Context Protocol (MCP) servers. It allows Flutter applications to expose data, functionality, and interaction patterns to Large Language Model (LLM) applications in a standardized way.
How to use MCP Server?
Install the package and create a Server instance with a name, version, and capabilities. Add handlers for tools, resources, and prompts, then connect to a transport (stdio, SSE, or Streamable HTTP). Use the simplified McpServer.createAndStart API or the classic connect method. Configuration of transports is done via TransportConfig objects.
Key features of MCP Server
- Multi-revision MCP support with per-version capability gating
- Core primitives: Resources, Tools, Prompts, and Completions
- Server-initiated requests (sampling, roots, elicitation)
- OAuth 2.1 Resource Server (RFC 9728) with Bearer token validation
- Structured tool output and resource links (2025-06-18+)
- Icons on tools, resources, and prompts (2025-11-25)
- List-changed notifications and progress/cancellation support
- Multiple transports: stdio, SSE, Streamable HTTP
- Cross-platform: Android, iOS, web, Linux, Windows, macOS
Use cases of MCP Server
- Expose application data to LLMs via static or templated resources
- Give LLMs the ability to perform actions with tools (e.g., calculators, file access)
- Provide reusable prompt templates that guide LLM interactions
- Build custom MCP servers that integrate with existing Dart/Flutter apps
Frequently asked questions
What transport options are available?
STDIO, SSE, and Streamable HTTP (with SSE streaming or JSON response mode). Each is configurable via `TransportConfig` constructors.
Does MCP Server work on multiple platforms?
Yes, it supports Android, iOS, web, Linux, Windows, and macOS.
How do I configure server capabilities?
Capabilities can be set with simple booleans via `ServerCapabilities.simple()` or with advanced object-based configuration using `ServerCapabilities` with detailed sub-capabilities.
What happens if a tool handler returns an error?
Handlers can return `CallToolResult` with `isError: true` to signal failure to the LLM, as shown in the division-by-zero example.
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