Cursor agent relies on context, not OpenAPI contract

On 2026-11-07, an article published on DEV Community examined how the Cursor agent actually behaves. The piece argues that a Cursor agent reasons only from the context that fits inside its current window, and that this context is a partial and sometimes stale view of the system rather than the authoritative API contract. When the up-to-date OpenAPI spec is not part of that context, the agent fills in the gaps from memory, naming conventions, and similar code, which is how it ends up hallucinating a path or a field. According to the article, the fix is not a better prompt. It is making the authoritative contract reachable, so the agent has the real operations and schemas to work from rather than reconstructing them from substitutes. As of now this stands as a single independent write-up, with no response from the vendor or follow-up coverage to confirm or contradict the claim.