Crate wasmcp 

Rust SDK for building MCP (Model Context Protocol) WebAssembly components

This crate provides the core traits and macros for implementing MCP handlers in Rust.

Macros

create_handlerDeprecated

Legacy macro for backwards compatibility (deprecated). Please use the #[mcp_handler] attribute macro instead.

json

Re-export of serde_json’s json! macro for convenience. Construct a serde_json::Value from a JSON literal.

Structs

PromptArgument

Represents a single argument for a prompt.

PromptMessage

Represents a message in a prompt conversation.

Enums

Json

Re-export of serde_json::Value as Json for convenience. Represents any valid JSON value.

PromptRole

The role of a participant in a prompt conversation.

Traits

AsyncPromptHandler

Async trait for implementing MCP prompts.

AsyncResourceHandler

Async trait for implementing MCP resources.

AsyncToolHandler

Async trait for implementing MCP tools.

PromptArguments

Trait for defining prompt arguments.

PromptHandler

Trait for implementing MCP prompts.

ResourceHandler

Trait for implementing MCP resources.

ToolHandler

Trait for implementing MCP tools.

Attribute Macros

mcp_handler

Re-export the proc macro for creating MCP handlers.