Cursor

Configure Cursor to understand Cadence smart contracts.

Add Cadence as project context

Cursor reads .cursor/rules/*.mdc files automatically. Create .cursor/rules/cadence.mdc and point it at the /llms-full.txt endpoint so the model has the full reference:

---
description: Cadence smart contract development on Flow
globs: *.cdc
---

When working with `.cdc` files, follow Cadence language conventions:
- Use `access(all)` for public access (not the deprecated `pub`)
- Resources use `@` prefix and must be moved with `<-` (never copied)
- Always handle resources — they cannot be lost or copied
- Use capability-based access control with entitlements

Full Cadence reference: https://cadence-lang.org/llms-full.txt
Quick index: https://cadence-lang.org/llms.txt

If you also use Claude Code, install the flow-ai-tools marketplace there for richer skill coverage — it ships the full Cadence + Flow skill suite (see Skills).

Add MCP server

In Cursor settings → MCP → Add new server:

• Name: cadence-mcp
• Type: command
• Command: flow mcp

This registers the Cadence MCP server — built into the Flow CLI as the flow mcp subcommand. Gives Cursor 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.