CEL OSS
CEL is the open context and trust data plane for AI agents.
CEL gives agent builders reusable contracts for four things every serious agent runtime needs:
- fuse many sources into one canonical context snapshot
- persist cross-turn memory locally or behind your own backend
- assemble governed model briefs with receipts
- inspect what the agent saw, remembered, sent to the model, and later claimed
The open project is intentionally not the full Cellar runtime. The live cortex engine, policy enforcement, monitoring, compliance workflows, hosted workers, and GUI surfaces are the commercial Cellar/Dilipod operating layer built on these contracts.
OSS Crates
Each crate is published on crates.io and maintained in a
standalone repository. This workspace (cellar-oss) mirrors them for integrated
examples and shared docs.
| Crate | Repository | Role | Start here |
|---|---|---|---|
cel-context |
crates.io | ContextElement / ContextSnapshot model and merge mechanics |
docs/concepts/context.md |
cel-memory |
crates.io | Memory trait, sessions, scopes, write hooks | docs/concepts/memory.md · BACKENDS.md |
cel-memory-sqlite |
crates.io | Local SQLite + vector + FTS backend | docs/concepts/memory.md |
cel-brief |
crates.io | Brief assembly, budgeting, governance, receipts | docs/concepts/brief.md |
cel-contracts |
crates.io | Action, planning, and execution receipt schemas | docs/concepts/receipts.md |
cel-summarizer |
crates.io | LLM summarizers for session rollups (Anthropic + Ollama) | docs/migration-0.2.md |
