Claude Code

Claude Code supports Solidity language server through the official plugin system.

Install the Plugin

Add the marketplace:

/plugin marketplace add asyncswap/solidity-language-server-plugin

Install the plugin:

/plugin install solidity-language-server@asyncswap

Reload plugins:

/reload-plugins

Prerequisites

The language server binary must be installed and available in your PATH:

curl -fsSL https://asyncswap.org/lsp/install.sh | sh

Or install from Cargo:

cargo install solidity-language-server

LSP Features

Once the plugin is installed, Claude Code can use the LSP tool on .sol files:

Operation	Description
`goToDefinition`	Find where a symbol is defined
`findReferences`	Find all references to a symbol
`hover`	Get documentation and type info
`documentSymbol`	List all symbols in a file
`workspaceSymbol`	Search symbols across the workspace
`goToImplementation`	Find implementations of interfaces
`incomingCalls`	Find callers of a function
`outgoingCalls`	Find functions called by a function

How It Works

The plugin registers solidity-language-server --stdio as the LSP server for .sol files. Claude Code launches the server automatically when you use LSP operations on Solidity files.

Source: asyncswap/solidity-language-server-plugin