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+---
+id: FLEX-WP-0008
+type: workplan
+title: "tenant-engine Consumer Integration"
+domain: infotech
+repo: flex-auth
+status: ready
+owner: codex
+topic_slug: flex-auth
+planning_priority: P1
+planning_order: 80
+depends_on_workplans:
+  - FLEX-WP-0007
+related_workplans:
+  - TEN-WP-0003
+  - KEY-WP-0005
+created: "2026-07-23"
+updated: "2026-07-23"
+---
+
+# FLEX-WP-0008: tenant-engine Consumer Integration
+
+## Purpose
+
+Make `tenant-engine` a registered protected-system consumer of flex-auth,
+in both directions its boundary contract requires
+(`net-kingdom/canon/standards/tenant-engine-boundary-contract_v0.1.md`):
+
+1. **tenant-engine's writes need authorization.** `tenant-engine`'s
+   `FlexAuthWriteAuthorizer` (`TEN-WP-0003`) calls `POST /v1/check` for
+   every mutation (`tenant.create`, `tenant.role.grant`, `tenant.role.revoke`,
+   `tenant.plan.assign`). Until a policy package exists here, every check
+   resolves to `deny`/`not_applicable` — correct fail-closed behavior, but
+   it means `tenant-engine` cannot actually perform any write yet. This
+   workplan is what makes real `allow` decisions reachable.
+2. **flex-auth's own decisions need tenant capability roles as input**, for
+   any protected system whose policy depends on a tenant's `PLTF`/`IAM`/
+   `VEN`/`CUS` roles (ADR-0014) at `aal2`-class decision time. flex-auth
+   must call `tenant-engine`'s live-lookup endpoint
+   (`GET /tenants/{id}/roles/live`) to enrich decision context, the same
+   role a `context` adapter plays for any other external fact source.
+
+Closer in shape to `FLEX-WP-0006`/`FLEX-WP-0007` (ops-warden's small,
+security-lane SSH-certificate integration) than `FLEX-WP-0003` (Markitect's
+document-heavy, CARING-benchmark integration) — `tenant-engine`'s resource
+and action vocabulary is small and doesn't need CARING descriptor mapping.
+
+## Task: Define tenant-engine resource and action vocabulary
+
+```task
+id: FLEX-WP-0008-T01
+status: todo
+priority: high
+```
+
+Resource types: `tenant`, `role-grant`, `plan-assignment`. Actions:
+`tenant.create`, `tenant.role.grant`, `tenant.role.revoke`,
+`tenant.plan.assign` — matching `TEN-WP-0003-T02`'s action-name mapping
+exactly (coordinate values, don't let the two repos invent different
+strings for the same action). Model on `examples/ops-warden`'s fixture
+shape (`schemas/check_request.schema.json`'s `resource{id,type,system}`,
+`system: "tenant-engine"`), not Markitect's.
+
+Done when: resource/action vocabulary documented under `docs/` following
+the `markitect-resource-namespace.md` / `markitect-action-vocabulary.md`
+naming pattern (`tenant-engine-resource-namespace.md`,
+`tenant-engine-action-vocabulary.md`).
+
+## Task: Author and register the tenant-engine policy package
+
+```task
+id: FLEX-WP-0008-T02
+status: todo
+priority: high
+```
+
+Policy: writes require an `aal2`+ assurance actor holding an appropriate
+capability role for the action (e.g. `tenant.plan.assign` might require
+`PLTF` or a platform-operator subject type; exact rules are a design
+decision for this task, not pre-specified here — coordinate with ADR-0014's
+role semantics, not invented fresh). Register in `registry/` per the
+existing pattern; add fixtures (`allow`/`deny` request/response pairs)
+mirroring `examples/ops-warden/check_request_allow_adm.json`.
+
+Done when: `POST /v1/check` against a request matching `TEN-WP-0003`'s
+`FlexAuthCheckClient` shape returns `allow` for an authorized actor/action
+and `deny` for an unauthorized one, exercised by `main_test.go`-style
+integration tests.
+
+## Task: tenant-engine live-lookup context adapter
+
+```task
+id: FLEX-WP-0008-T03
+status: todo
+priority: medium
+```
+
+A context-enrichment adapter (mirrors `internal/adapters/{relationship,rule,topaz}`'s
+shape) that calls `tenant-engine`'s `GET /tenants/{id}/roles/live` and
+attaches the result to decision context for policies that need it — used by
+*other* protected systems' policies that key off tenant capability role,
+not only by tenant-engine's own policy from T02. Must fail closed: adapter
+error or `tenant-engine` unavailability must not silently produce an empty
+role list indistinguishable from "no roles granted" (same rule
+`tenant-engine`'s own read endpoints already enforce — don't weaken it on
+the consuming side).
+
+Done when: a policy package referencing tenant capability role context
+correctly denies when the adapter call fails, not just when it succeeds
+with an empty result.
+
+## Task: Closure review
+
+```task
+id: FLEX-WP-0008-T04
+status: todo
+priority: low
+```
+
+Confirm T01–T03 done; run flex-auth's existing test suite plus the new
+fixtures. Note in closure: `TEN-WP-0003`'s `FlexAuthWriteAuthorizer` should
+be re-verified against a real `allow` decision once this workplan's policy
+package exists (it was only tested against `deny`/`not_applicable`
+responses when built, since this workplan didn't exist yet). Run `statehub
+fix-consistency`.