net-kingdom/canon/standards/security-layer-model-companion_v0.1.md

id	type	title	domain	status	version	companion_to	owner	publication_owner	created	updated	review_interval	standard_token
netkingdom-security-layer-model-companion-v0.1	standard-companion	NetKingdom Security Layer Model — Agent Companion v0.1	netkingdom	proposed	0.1	canon/standards/security-layer-model_v0.6.md	gate-house	net-kingdom	2026-08-29	2026-08-29	3m	security-layer-model-companion_v0.1

Security Layer Model — Agent Companion

This is the operative form of security-layer-model_v0.6.md. Same rules, no change log, no review history. The statute governs where the two disagree; if you find a disagreement, report it — that is a finding, not a formatting problem.

Read this if you are an agent or an operator working in a NetKingdom repository, or if your repository has been asked to declare its layer.

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1. The four layers

Layer	You are this if you produce	Deterministic
Taxonomy	terms, semantic contracts, standards	n/a
Tooling	state and persistence	yes
Engine	a deterministic API for one modeled concept	yes
Staff	specifications, decisions, workplans, tasks	no

One test decides it: given the same authoritative inputs, do you always return the same result? If your core function is inference or judgment, you are Staff — however much of your work happens at runtime.

Engines carry a role: PDP (decides — access-engine only), PIP (supplies facts as claims), Evidence (audit-core), Lifecycle (an API over Tooling it owns). A new engine is a PIP unless the statute says otherwise.

2. Declare your layer

Put this in your INTENT.md frontmatter. A layer someone else stated about you is not a declaration.

layer: Staff          # Taxonomy | Tooling | Engine | Staff
role: null            # Engines only: PDP | PIP | Evidence | Lifecycle

Then state it in prose, in your own voice, in the body. Contest the proposed layer if it is wrong — a correction is worth more than a label.

Reference implementation of the machine-readable form: ops-warden's layer.yaml, scripts/check_layer_conformance.py, and tests/test_layer_conformance.py.

3. The rules that bind everyone

1. One decision point. access-engine renders authorization decisions. No other repository, in any layer, renders or caches one.
2. Compiled data that determines an outcome is still deciding. A registry, cache, or schema that resolves a result before the engine runs has decided early.
3. Doctrine arrives as a claim. Anything that changes an outcome — an authority ceiling, a zone stance, a posture, a maturity level — reaches the decision as a request claim or a versioned policy rule, never by a side channel.
4. Adaptive systems may only tighten. Reduce authority, require step-up, request containment — never manufacture authority.
5. Staff never touches Tooling directly. It acts through Engine APIs. See §4.
6. Every allow has a lifetime. A TTL, or a binding to a session or obligation that ends.

4. If you touch Tooling

"Tooling" means a system catalogued as Tooling in the statute's §4 — today key-cape and OpenBao. Uncatalogued infrastructure (the State Hub, llm-connect) is outside this rule, but list it anyway so your check is total.

Three sanctioned shapes. Anything else is a violation:

Shape	When	You must
Read-only diagnostic	no engine exposes the read	declare it; no writes; treat it as a gap to close
Conduit	you run the owner's tool under the caller's identity	present no credential of your own, widen nothing, stay reconstructable as the caller
Declared gap	you must contact Tooling and no engine exposes it	declare capability, intended_owner, blocked_on, review — machine-readably

A conduit that presents its own token is not a conduit. A declared gap is tracked non-conformance, not conformance — but declaring it is always better than hiding it, and it will never be scored below silence.

5. If you cause side effects (you are PEP-shaped)

Being PEP-shaped does not change your layer. ops-warden issuing a certificate and ops-mason opening a route are both Staff and both PEP-shaped.

1. No side effect without a decision record naming the request it was rendered for.
2. Never cache the verdict. Caching an input claim under its own freshness rule is fine; caching the answer is a second decision point.
3. Publish your unreachable-engine stance — total, per zone or equivalent, no implicit default, no per-call discretion. Reference shape: ops-warden ADR-0009.
4. Stay reconstructable, within the bound in §6.

If access-engine is reachable but degraded, the fallback is the engine's. If it is unreachable, the behaviour is necessarily yours — which is why it must be declared in advance rather than decided in the moment.

6. What you may never claim about evidence

An append-only archive with a verified chain proves records were not altered or truncated after arrival. It proves nothing about an event never sent.

• ✗ "the audit record proves it happened"
• ✗ "there is no record, so it did not happen"
• ✓ "the archive proves the records it holds were not altered or truncated after arrival"

The event an adversary most wants missing is the negative one — a revocation, a denial, a containment action. If a control's soundness depends on an event being present, that evidence is load-bearing and its emission must be atomic with the state change, queued locally. Otherwise it is attributive: seek atomicity, and if you trade it away deliberately, declare the trade and never describe the trail as complete.

If you emit adaptive-relevant events, publish an expected cadence. A drop below it is a finding. Silence is a signal.

7. If you are an agent

Same layer as your human colleagues, different blast radius:

1. No standing credential. Authority is per task, time-bounded, attributable.
2. Tool use is a conduit or an Engine API. There is no third route.
3. Your memory is not a state plane. Memory, tool-call traces, and prompt caches must not become state another layer depends on unless catalogued.
4. Every action is reconstructable as the caller's action.

Tool availability is not permission. A tool being callable says the operation exists, not that you may invoke it.

8. Conformance: four states

State	Meaning
Conforming	no Tooling contact, or only declared diagnostic/conduit shapes
Blocked-clean	the capability does not exist because no engine exposes it, and you make no Tooling contact
Declared gap	a declared §5.3 contact — tracked non-conformance
Undeclared violation	anything else

Blocked-clean is not worse than conforming. Declining a shortcut and leaving a capability at zero is compliance at cost. It will never be ranked below a repository that quietly opened a client and said nothing.

9. Consuming NetKingdom security from outside

Operations is HelixForge's responsibility — its reef, rail, rapp, and rein concepts — and NetKingdom provides the security and approval framework those operations consume.

That interface is not specified yet. What holds today is only what holds for any consumer: authorization decisions come from access-engine, approvals are objects in approval-engine consumed as claims, credentials are materialized by secrets-engine after a decision, and evidence goes to audit-core under the bound in §6. A HelixForge component that causes a protected side effect is PEP-shaped and §5 applies to it.

What is not settled: how a reef, rail, rapp, or rein maps onto the layer model — whether they are subjects a decision is rendered about, principals that request, PEP-shaped consumers, or none of these. Until that is written, do not assume a mapping. Raising it is welcome.

10. Two things the estate cannot do yet

Stated so nobody plans around a capability that does not exist:

• Nothing is observed in production. kings-guard has reported that it has never seen a real event. Do not cite "observed in operation" as evidence.
• Nothing can be contained automatically. There is no actuation surface — no API to reduce authority, require step-up, or isolate a workload. The capability is at zero, not degraded.

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Statute: canon/standards/security-layer-model_v0.6.md. Owner: gate-house. Report a disagreement between this and the statute as a finding.