Show HN: MemorySync API Gives AI Agents Persistent User Memory

Summary

The creator of MemorySync introduced it on Show HN as an API for adding persistent user memory to AI agents without building the memory system from scratch. An application sends MemorySync information supplied by a user; the service stores useful memories for that user and returns them when needed in later interactions. A no-account demo lets people store a memory, refresh the page, and ask for it back, while API documentation is available separately. The service is currently hosted only, with no self-hosting option, and is available in one US region. Storing a memory currently takes a few seconds. The free plan includes 10,000 saves and 1,000 searches per month and does not require a credit card. The creator is seeking feedback on whether this abstraction is useful for building agents and what developers would expect from a memory API.