{ "name": "chrome_vector_index", "description": "Manage the semantic content vector index. stats: entry/doc count, approx size in bytes, model name, lastUpdated (never returns raw vectors); clear: reset the index; rebuild: trigger a re-index (long-running; returns immediately with started:true).", "parameters": { "type": "object", "properties": { "action": { "type": "string", "enum": ["stats", "clear", "rebuild"], "description": "stats: summarize the index without raw vectors; clear: reset the index; rebuild: kick off a re-index and return immediately." } }, "required": ["action"] } }