# Concepts **URL:** https://forum.hal0.dev/c/docs/docs-concepts/20.md [Latest](https://forum.hal0.dev/latest.md) · [Categories](https://forum.hal0.dev/categories.md) · [Tags](https://forum.hal0.dev/tags.md) --- ## [Hal0 docs: Concepts](https://forum.hal0.dev/t/hal0-docs-concepts/60)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:51am UTC](https://forum.hal0.dev/t/hal0-docs-concepts/60 "2026-08-22T06:51:17Z")
Concepts Architecture: Architecture (hal0 docs) Slots: Slots (hal0 docs) Capabilities & profiles: Capabilities & profiles Stacks: Stacks (hal0 docs) Strix Halo: Strix Halo (hal0 docs) Memory: Memory (hal0 docs) Agents: A… --- ## [About the Concepts category](https://forum.hal0.dev/t/about-the-concepts-category/81)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 28, 2026, 8:31pm UTC](https://forum.hal0.dev/t/about-the-concepts-category/81 "2026-08-28T20:31:29Z")
Slots, stacks, profiles, memory, agents, and the Strix Halo itself. --- ## [Memory (hal0 docs)](https://forum.hal0.dev/t/memory-hal0-docs/26)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/memory-hal0-docs/26 "2026-08-22T06:49:29Z")
hal0 can give your platform a persistent memory — a store of facts that both the operator surfaces and the bundled agent can write to and recall from. It’s a deliberate, gated subsystem behind a single config flag: pow… --- ## [Agents (hal0 docs)](https://forum.hal0.dev/t/agents-hal0-docs/23)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/agents-hal0-docs/23 "2026-08-22T06:49:23Z")
hal0 doesn’t build its own agent runtime — it bundles one, and hal0’s job is to run it safely: as a sandboxed service, shaped by a persona that controls what it can do, with a human in the loop for risky actions and a … --- ## [Slots (hal0 docs)](https://forum.hal0.dev/t/slots-hal0-docs/28)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/slots-hal0-docs/28 "2026-08-22T06:49:33Z")
A slot is hal0’s unit of served inference: one named place that runs one model. Behind every slot is a single podman container, and around every slot is a lifecycle the platform manages for you. Slots are what the disp… --- ## [Capabilities & profiles](https://forum.hal0.dev/t/capabilities-profiles/25)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/capabilities-profiles/25 "2026-08-22T06:49:27Z")
Three distinct ideas shape every slot in hal0: capabilities describe what you want a slot to do, profiles describe the whole tune it runs with (flags, context window, thinking default, vision, speculation), and the slo… --- ## [Strix Halo (hal0 docs)](https://forum.hal0.dev/t/strix-halo-hal0-docs/30)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/strix-halo-hal0-docs/30 "2026-08-22T06:49:37Z")
hal0 is hardware-agnostic in principle, but it is designed around one reference platform: AMD’s Ryzen AI Max+ (“Strix Halo”). This is an APU that pairs a capable Radeon iGPU and an XDNA NPU with a large pool of memory … --- ## [Brain (hal0 docs)](https://forum.hal0.dev/t/brain-hal0-docs/102)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 29, 2026, 4:41pm UTC](https://forum.hal0.dev/t/brain-hal0-docs/102 "2026-08-29T16:41:47Z")
hal0-brain is hal0’s own resident operator — a small, always-on model whose job is chatting with you and driving hal0’s own admin tool catalog: slots, models, hardware, the Operator Board, orchestration settings. It is… --- ## [Stacks (hal0 docs)](https://forum.hal0.dev/t/stacks-hal0-docs/29)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/stacks-hal0-docs/29 "2026-08-22T06:49:35Z")
Editing slots one at a time works, but swapping an entire lineup — the agent model, the utility model, their profiles, the embed and rerank lanes that ride along with them — is tedious to do by hand, and easy to leave… --- ## [Security posture](https://forum.hal0.dev/t/security-posture/27)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/security-posture/27 "2026-08-22T06:49:31Z")
hal0’s security posture has two layers, and it’s important not to conflate them: a default posture (open on your LAN, no auth enforced) that hasn’t changed, and a v1.0 auth layer that’s new — real, code-complete, and … --- ## [Architecture (hal0 docs)](https://forum.hal0.dev/t/architecture-hal0-docs/24)
**Author:** [@system](https://forum.hal0.dev/u/system)\ **Replies:** 0\ **Last updated:** [August 22, 2026, 6:49am UTC](https://forum.hal0.dev/t/architecture-hal0-docs/24 "2026-08-22T06:49:25Z")
hal0 is a single self-hosted service that turns one machine into an OpenAI-compatible inference platform. Everything runs behind one process — hal0-api — which owns configuration, model and slot lifecycle, request rou…