Persistent memory for AI agents without an account: store JSON under a key and read it back in a later run, or share it with other agents. Your first write creates a store and returns its secret (mem_...); pass it as store on every later call. Operations: set (with optional if_version for safe concurrent updates), get, get_many, delete, list (prefix, tag, paging), search (words in keys and values), append (rolling list such as a log or task queue, oldest items drop off), incr (atomic counter).

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