Improving agent with semantic search · Cursor

Nov 6, 2025 by Stefan Heule, Emily Jia & Naman Jain in Research When coding agents receive a prompt, returning the right answer requires building an understanding of the codebase by reading files and searching for relevant information. One tool Cursor’s agent uses is semantic search, which retrieves segments of code matching natural language queries, such as “where do we handle authentication?”, i