chat-ui

e4437241 - Fix MCP search tools using outdated dates in date-range parameters

Fix MCP search tools using outdated dates in date-range parameters The SEARCH instruction in the tool preprompt contained the phrase "use actual year for past events, not today's year" which LLMs interpreted as a blanket prohibition against using the current year. This caused search tools (e.g. Exa) to fill date-range parameters like startPublishedDate/endPublishedDate with stale dates from the model's training data instead of the current date. Changes: - Add ISO 8601 formatted date (e.g. 2026-02-25) alongside the human-readable date so models can directly use it in tool parameters without reformatting - Replace ambiguous "not today's year" phrasing with clear positive directives: use historical years for past events, use today's year for current topics - Explicitly instruct models to use today's date as the end date for any date-range parameters unless the user specifies otherwise https://claude.ai/code/session_01DmqK4Lmm7Uv41oHV3HqWpT