z4j-core 1.5.0

z4j domain core - models, protocols, transport, redaction, policy (Apache 2.0)

z4j-core

The z4j domain core, shared models, protocols, transport, redaction, policy.

Pure-Python dependency for every z4j package. No framework / engine / database imports, so it can be vendored into agent processes without dragging server runtime weight. End users do not install this package directly; it ships as a transitive dependency of z4j or any agent package.

What's in here

• Pydantic models, Task, Worker, Queue, Schedule, Event, Command, Agent, plus the wire-frame envelope types
• Adapter protocols, QueueEngineAdapter, SchedulerAdapter, FrameworkAdapter. Every framework / engine / scheduler package implements one or more of these.
• Wire protocol, frame definitions and the HMAC envelope used by z4j ↔ agent WebSocket transport (signed v2 protocol)
• Redaction engine, strips secrets from logged event payloads (URLs, headers, kwargs, exceptions) before they hit the brain
• Policy types, role-based action enums (Viewer / Operator / Admin), used by the brain's RBAC layer
• Error hierarchy, shared exception classes so agents and brain agree on what counts as AuthorizationError vs NotFoundError vs ConflictError

Install

pip install z4j-core

End users normally get this as a transitive dependency. Direct installation is appropriate when you're building a custom adapter against the protocols.

Stability

The wire protocol is v=2 and additive within the 1.x major. Adapter protocols (QueueEngineAdapter, etc.) are stable contracts within the 1.x major; new optional methods may be added.

Documentation

Full docs at z4j.dev/concepts/architecture/.

License

Apache-2.0, see LICENSE.

Links

• Homepage: https://z4j.com
• Documentation: https://z4j.dev
• PyPI: https://pypi.org/project/z4j-core/
• Issues: https://github.com/z4jdev/z4j-core/issues
• Changelog: CHANGELOG.md
• Security: [e-mail] (see SECURITY.md)