diff --git a/registry/capabilities/capability.finance.security-budget-evidence.md b/registry/capabilities/capability.finance.security-budget-evidence.md
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+---
+id: capability.finance.security-budget-evidence
+owner: fin-hub
+status: draft
+domain: infotech
+maturity:
+  discovery:
+    current: D3
+    target: D5
+    confidence: medium
+    rationale: Owner scope, neighboring responsibilities, concrete use cases and limitations
+      are documented; no exhaustive or generalized maturity claim.
+  availability:
+    current: A4
+    target: A4
+    confidence: medium
+    rationale: 'Source interface assessed 2026-10-14: Budget, commitment, spend attribution
+      and planning-evidence consumption. Availability describes the delivery form,
+      not production acceptance. No verified concurrent runtime EUR risk/cost enforcement
+      for agents.'
+external_evidence:
+  completeness:
+    level: C1
+    confidence: low
+    basis: Source artifacts establish a bounded capability; no independent consumer-completeness
+      assessment in this review.
+  reliability:
+    level: R0
+    confidence: low
+    basis: No longitudinal consumer reliability measurement established by this review.
+name: Budget and cost evidence for security operations
+summary: Budget, commitment, spend attribution and planning-evidence consumption.
+tags:
+- security
+- netkingdom
+- framework-reuse
+discovery:
+  intent: Budget, commitment, spend attribution and planning-evidence consumption
+  includes:
+  - Budget, commitment, spend attribution and planning-evidence consumption
+  excludes:
+  - No verified concurrent runtime EUR risk/cost enforcement for agents
+  use_cases:
+  - 'U09: Maintainer observes posture, prioritizes findings, coordinates work and
+    verifies outcomes'
+  - 'U11: Agent executes an attributable bounded task and supplies supervision evidence'
+availability:
+  current_level: A4
+  target_level: A4
+  current_artifacts:
+  - SCOPE.md
+  consumption_modes:
+  - HTTP API
+  - source
+relations:
+  related_to:
+  - capability.resources.security-capacity
+  - capability.agents.performance-learning
+evidence:
+  documentation:
+  - SCOPE.md
+consumer_guidance:
+  recommended_for:
+  - Maintainer observes posture, prioritizes findings, coordinates work and verifies
+    outcomes
+  - Agent executes an attributable bounded task and supplies supervision evidence
+  not_recommended_for:
+  - No verified concurrent runtime EUR risk/cost enforcement for agents
+  known_limitations:
+  - No verified concurrent runtime EUR risk/cost enforcement for agents
+  - 2026-10-14 architecture review estimates operational maturity separately; a registry
+    entry does not authorize execution or establish deployment.
+---
+
+# Budget and cost evidence for security operations
+
+Budget, commitment, spend attribution and planning-evidence consumption.
+
+## Reuse boundary
+
+No verified concurrent runtime EUR risk/cost enforcement for agents.
+
+## Supported use cases
+
+- U09: Maintainer observes posture, prioritizes findings, coordinates work and verifies outcomes
+- U11: Agent executes an attributable bounded task and supplies supervision evidence
+
+## Evidence and integration
+
+- [SCOPE.md](../../SCOPE.md)
+
+Assessment: CUST-WP-0081, 2026-10-14. Relations identify interfaces to compose; they do not certify native integration. Existing external evidence levels are retained where present. New entries use conservative C1/R0 until consumer assessment exists.
diff --git a/registry/indexes/capabilities.yaml b/registry/indexes/capabilities.yaml
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+version: 1
+domain: infotech
+capabilities:
+- id: capability.finance.security-budget-evidence
+  name: Budget and cost evidence for security operations
+  summary: Budget, commitment, spend attribution and planning-evidence consumption.
+  domain: infotech
+  status: draft
+  owner: fin-hub
+  tags:
+  - security
+  - netkingdom
+  - framework-reuse
+  vector: D3 / A4 / C1 / R0
+  path: registry/capabilities/capability.finance.security-budget-evidence.md
+  consumption_modes:
+  - HTTP API
+  - source
+updated: '2026-10-14'