Cursor can struggle when API docs are outdated
Cursor can create that look reasonable but use endpoints that no longer exist or parameters that changed months earlier. The main issue is not always the code itself, but the freshness of the information Cursor is using.
When working with a new API, more time may be spent manually feeding into Cursor so it does not make up old examples or outdated model names. People building production apps are comparing several approaches, including pasting docs into context, using MCP servers, or building their own .
Keeping supplied with current API is becoming a real bottleneck for work that depends on third-party services. Related approaches include MCP, llms.txt, and s that make easier for agents to read.
Key points
- Cursor may use old API details that no longer work.
- The weak point is often outdated source information, not the generated code structure.
- Manually adding to context is becoming common but time-consuming.
- MCP servers, s, and llms.txt are possible ways to keep agents better informed.
- This is especially important for production apps that depend on s.