About AllSource

AllSource exists because the data layer underneath modern applications — and especially agentic ones — has been wrong for a long time. Production systems lose history every time a row is updated. Audit trails are bolted on after the fact. Time-travel debugging requires forensic log analysis. Agents have to re-explain themselves on every invocation.

We thought the answer was a single, focused engine: append-only events as the source of truth, projections as the only way to read derived state, and a query layer fast enough that "give me the world as it was on Tuesday" is a sub-millisecond operation rather than a research project. That's AllSource Core — written in Rust, durable by default, and built to scale through replication rather than by stitching another database underneath.

Around it we ship a small constellation: a gateway in Elixir that handles auth, billing, and rate limiting; a graph-and-vector layer (Prime) for AI workloads; SDKs in four languages; and a CLI (chronis) that shows what an agent-native task tracker looks like when its substrate is an event store. All of it is open source, all of it ships from one monorepo, and the whole thing is designed to be embedded as easily as it's deployed.