Claude

Configure Claude to work with Cadence via skills, MCP, or context injection.

Claude Code

Install Flow's skill library

The official onflow/flow-ai-tools marketplace ships the full Cadence + Flow skill suite under one plugin:

/plugin marketplace add onflow/flow-ai-tools
/plugin install flow-dev@flow-ai-tools

See Skills for the full skill list.

Add MCP server

claude mcp add --scope user cadence-mcp -- flow mcp

This registers the Cadence MCP server — built into the Flow CLI as the flow mcp subcommand. Gives Claude Code access to Cadence code checking, type inspection, symbol lookup, contract source fetching, and read-only on-chain script execution. Requires Flow CLI ≥ v2.16.0.

Claude Desktop

Add the Cadence MCP server to your claude_desktop_config.json:

{
  "mcpServers": {
    "cadence-mcp": {
      "command": "flow",
      "args": ["mcp"]
    }
  }
}

Claude API

When building with the Claude API, inject Cadence context into the system prompt:

# Fetch the full documentation
curl -s https://cadence-lang.org/llms-full.txt

Or use the MCP endpoint for programmatic access to documentation and language tools.