Show HN: MemorySync offers an interactive playground for AI agent memory

MemorySync launches an interactive playground that stores facts through its production API and returns them by meaning in new sessions. Visitors can create a free key without signup, with a 7-day limit of 200 writes and 500 searches. Claiming the key with an email moves the account to the free plan with 10,000 writes and 1,000 searches per month.