SubVault

The product is an MCP server that provides persistent memory for AI assistants, storing session facts, decisions, people and action items and retrieving them on demand to avoid re-explaining context across sessions and tools. It sells to software developers and engineering teams in small to mid-size companies who use MCP clients such as Claude, Cursor and Copilot. Compared to transcript dumps and built-in memory, it extracts structured entries, ranks by source, recency and relevance, and returns a fixed token budget usable across any connected client.

Key features

• Vault session to save facts and decisions
• Remember to load matching context
• Shared memory across MCP clients
• Structured extraction of facts and decisions
• Ranking by source, recency, relevance
• Query classification by intent
• Fixed ~2,000 token context budget
• Deduplication via hashing on save
• Prompt-injection protection on items
• One SQLite database per vault