Planes, Data, and Flow

CueCrux organises its architecture into coordinated “planes” so trust, ingestion, automation, and economics can evolve without tripping over one another. This guide turns the checklist in the master plan (§Architecture, §UI Surface, §Marketplace) into visual references you can share with teammates, investors, or compliance reviewers.

Plane Summary

Plane	Purpose	Canonical Data
WebCrux (Web)	UI, auth, BFF, workspaces.	Users, orgs, sessions, history, saved answers, entitlements.
EngineCrux (Engine)	Retrieval, QUORUM (MiSES) assembly, receipts.	Perofant™ artefacts, MiSES/Quorum groups, CROWN snapshots.
FactoryCrux (Ingestion)	Uploads, scanners, embeddings.	Sources, jobs, provenance ledger hooks.
WatchCrux (Operator)	Audits, Findings, drift detection.	Findings snapshots, audit receipts, SBOM digests.
OpsCrux (Automation/Ops)	Budgets, agent runs, change governance.	Budget envelopes, agent receipts, MCP telemetry.
InfraCrux (Infrastructure)	Observability, backups, routing.	Prometheus metrics, Grafana dashboards, PITR configs.
Crux Economy (Economic)	Credits, trust scores, participation.	Crux transactions, balances, agent usage.
Private Stack (Tenant)	Isolation & residency guarantees.	Tenant manifests, residency policies, key hierarchies.

Layered View

graph TD
    subgraph Experience
        Web[WebCrux\nUI & BFF]
    end
    subgraph Intelligence
        Engine[EngineCrux\nRetrieval + QUORUM (MiSES)]
        Factory[FactoryCrux\nIngestion]
        Agents[OpsCrux + AgentCrux]
    end
    subgraph Assurance
        Watch[WatchCrux\nAudits & Findings]
        Infra[InfraCrux\nObservability]
    end
    subgraph Economics
        Crux[Crux Economy]
        Tenant[Private Stack]
    end

    Web --> Engine
    Engine --> Web
    Factory --> Engine
    Engine --> Watch
    Watch --> Web
    Crux --> Web
    Web --> Crux
    Agents --> Web
    Infra --> Watch
    Tenant --> Web
    Web --> Tenant

graph TD
    subgraph Experience
        Web[WebCrux\nUI & BFF]
    end
    subgraph Intelligence
        Engine[EngineCrux\nRetrieval + QUORUM (MiSES)]
        Factory[FactoryCrux\nIngestion]
        Agents[OpsCrux + AgentCrux]
    end
    subgraph Assurance
        Watch[WatchCrux\nAudits & Findings]
        Infra[InfraCrux\nObservability]
    end
    subgraph Economics
        Crux[Crux Economy]
        Tenant[Private Stack]
    end

    Web --> Engine
    Engine --> Web
    Factory --> Engine
    Engine --> Watch
    Watch --> Web
    Crux --> Web
    Web --> Crux
    Agents --> Web
    Infra --> Watch
    Tenant --> Web
    Web --> Tenant

Experience plane routes every query; intelligence planes supply evidence; assurance planes keep the proof honest; economic planes record who contributes and what they can consume.

Data Exchange Cheat Sheet

From → To	Payload	Transport
Web → Engine	`POST /v1/answers` with QUORUM (MiSES) parameters	Nitro BFF over HTTPS
Engine → Web	Answer body + MiSES + receipts	BFF streaming response
Factory → Engine	Artefact commit events	Engine ingest API
Engine → Watch	Audit receipts, health metadata	Findings service
Watch → Web	PASS/WARN/FAIL snapshot	Signed webhook + SSE
Web ↔ Crux Economy	Spend/earn ledger entries	`/api/crux/*`

Query Walkthrough

sequenceDiagram
    participant User
    participant Web as WebCrux BFF
    participant Engine as EngineCrux
    participant Watch as WatchCrux
    participant Crux as Crux Economy

    User->>Web: Ask \"Are UK ESG disclosures mandatory in 2025?\"
    Web->>Crux: Reserve 1 Crux (verified budget)
    Web->>Engine: /v1/answers { mode: verified }
    Engine->>Engine: Hybrid retrieval + QUORUM (MiSES) assembly
    Engine-->>Web: Answer + receipt ID (includes MiSES)
    Web-->>User: Render summary, citations, receipts
    Engine->>Watch: Emit audit artefacts + findings update
    Watch-->>Web: PASS banner (or higher severity)
    Crux-->>User: Ledger entry (“Spent 1 Crux · Answer 8fj...”) visible in Economy dashboards

sequenceDiagram
    participant User
    participant Web as WebCrux BFF
    participant Engine as EngineCrux
    participant Watch as WatchCrux
    participant Crux as Crux Economy

    User->>Web: Ask \"Are UK ESG disclosures mandatory in 2025?\"
    Web->>Crux: Reserve 1 Crux (verified budget)
    Web->>Engine: /v1/answers { mode: verified }
    Engine->>Engine: Hybrid retrieval + QUORUM (MiSES) assembly
    Engine-->>Web: Answer + receipt ID (includes MiSES)
    Web-->>User: Render summary, citations, receipts
    Engine->>Watch: Emit audit artefacts + findings update
    Watch-->>Web: PASS banner (or higher severity)
    Crux-->>User: Ledger entry (“Spent 1 Crux · Answer 8fj...”) visible in Economy dashboards

Every plane contributes a small, auditable piece of the flow; the diagrams make it clear where data lives and how the trust guarantees stay intact.

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