AllSource gives AI agents durable, event-sourced memory with complete provenance and time-travel queries. It recalls in ~12μs p99, ingests 469K events/sec, and exposes 73 MCP tools—without an external embedding API. Run the Apache-2.0 core yourself or use AllSource Prime for hosted, derived memory. Built for teams that need to reconstruct exactly what an agent knew, when it knew it, and which source shaped each decision. Self-host free; hosted Prime is £18.99/month after a 14-day trial.