diff --git a/.changeset/drain-final-storyboard-drift.md b/.changeset/drain-final-storyboard-drift.md
new file mode 100644
index 0000000000..863b04e43e
--- /dev/null
+++ b/.changeset/drain-final-storyboard-drift.md
@@ -0,0 +1,16 @@
+---
+---
+
+Drain the final 7 storyboard sample_request drift entries (adcp#2763). Allowlist goes to **zero** — ratchet is now fully strict.
+
+Closes out the cluster arc kicked off by #2768 (lint) and worked through #2781 (auth), #2788 (format_id/signal_ids), #2798 (bundled drift), #2795 (asset_type discriminator + governance docs), #2799 (refine[] naming), #2801 (url-asset uri-template). After this merges, any new sample_request drift fails CI immediately.
+
+Specific fixes:
+
+- **3× `check_governance` fixtures dropped `account` additionalProperty.** `governance-delivery-monitor#initial_approval/check_governance_approved`, `#drift_recheck/check_governance_drift`, `governance-spend-authority#governance_check_conditions/check_governance_conditions`. The #2776 docs landed earlier made account rejection explicit; fixtures now match. `drift_recheck` also dropped stray `media_buy_id` at root (not a top-level property of `check-governance-request`).
+- **`report_plan_outcome` fixture** restructured `outcome: {type: "media_buy_created", media_buy_id, total_budget, packages}` (object) to the canonical `outcome: "completed"` (enum string) + `seller_response: {seller_reference, committed_budget, packages}`.
+- **`si_get_offering`** added the required `offering_id`.
+- **`si_initiate_session`** added the required `identity` block with `consent_granted: true` + `anonymous_session_id`.
+- **`deterministic-testing#deterministic_session/initiate_session`** added `consent_granted: true` to identity.
+
+All 7 allowlist entries removed deterministically via shrink-only regeneration.
diff --git a/static/compliance/source/protocols/governance/index.yaml b/static/compliance/source/protocols/governance/index.yaml
index a35987290d..8839db4847 100644
--- a/static/compliance/source/protocols/governance/index.yaml
+++ b/static/compliance/source/protocols/governance/index.yaml
@@ -604,15 +604,15 @@ phases:
         sample_request:
           plan_id: "$context.plan_id"
           governance_context: "gov_ctx_acme_q2_approved"
-          outcome:
-            type: "media_buy_created"
-            media_buy_id: "$context.media_buy_id"
-            total_budget: 50000
+          outcome: "completed"
+          seller_response:
+            seller_reference: "$context.media_buy_id"
+            committed_budget: 50000
             packages:
-              - product_id: "sports_ctv_q2"
-                budget: 30000
-              - product_id: "outdoor_video_q2"
-                budget: 20000
+              - package_id: "pkg_sports_ctv_q2"
+                committed_budget: 30000
+              - package_id: "pkg_outdoor_video_q2"
+                committed_budget: 20000
 
           idempotency_key: "$generate:uuid_v4#media_buy_governance_escalation_report_outcome_report_plan_outcome"
           context:
diff --git a/static/compliance/source/protocols/sponsored-intelligence/index.yaml b/static/compliance/source/protocols/sponsored-intelligence/index.yaml
index 9874f31e65..9846ad7bcc 100644
--- a/static/compliance/source/protocols/sponsored-intelligence/index.yaml
+++ b/static/compliance/source/protocols/sponsored-intelligence/index.yaml
@@ -108,6 +108,7 @@ phases:
           - Format specifications for sponsored content
 
         sample_request:
+          offering_id: "novamotors_conversational_v1"
           context:
             correlation_id: "si_session--si_get_offering"
 
@@ -155,6 +156,11 @@ phases:
 
         sample_request:
           intent: "User is researching electric vehicles for long road trips and wants to talk to Nova Motors"
+          identity:
+            consent_granted: true
+            consent_timestamp: "2026-04-22T14:00:00Z"
+            user:
+              locale: "en-US"
 
           idempotency_key: "$generate:uuid_v4#si_baseline_session_lifecycle_si_initiate_session"
           context:
diff --git a/static/compliance/source/specialisms/governance-delivery-monitor/index.yaml b/static/compliance/source/specialisms/governance-delivery-monitor/index.yaml
index 29195d4fd0..5240dd7a0c 100644
--- a/static/compliance/source/specialisms/governance-delivery-monitor/index.yaml
+++ b/static/compliance/source/specialisms/governance-delivery-monitor/index.yaml
@@ -201,10 +201,6 @@ phases:
           - monitoring: delivery phase governance is active
 
         sample_request:
-          account:
-            brand:
-              domain: "acmeoutdoor.example"
-            operator: "pinnacle-agency.example"
           plan_id: "$context.plan_id"
           caller: "https://pinnacle-agency.example"
           tool: "create_media_buy"
@@ -318,15 +314,10 @@ phases:
           - conditions: if approved, conditions for rebalancing (e.g., "Reallocate $5K from CTV to video")
 
         sample_request:
-          account:
-            brand:
-              domain: "acmeoutdoor.example"
-            operator: "pinnacle-agency.example"
           plan_id: "$context.plan_id"
           caller: "https://pinnacle-agency.example"
           phase: "delivery"
           governance_context: "gov_ctx_acme_delivery_approved"
-          media_buy_id: "mb_acme_q2_2026"
           delivery_metrics:
             reporting_period:
               start: "2026-05-01T00:00:00Z"
diff --git a/static/compliance/source/specialisms/governance-spend-authority/index.yaml b/static/compliance/source/specialisms/governance-spend-authority/index.yaml
index 1d81940d92..b5e59c6190 100644
--- a/static/compliance/source/specialisms/governance-spend-authority/index.yaml
+++ b/static/compliance/source/specialisms/governance-spend-authority/index.yaml
@@ -228,10 +228,6 @@ phases:
           - findings: may include warning-severity findings noting the conditions
 
         sample_request:
-          account:
-            brand:
-              domain: "acmeoutdoor.example"
-            operator: "pinnacle-agency.example"
           plan_id: "$context.plan_id"
           caller: "https://pinnacle-agency.example"
           tool: "create_media_buy"
diff --git a/static/compliance/source/universal/deterministic-testing.yaml b/static/compliance/source/universal/deterministic-testing.yaml
index 38f567e25f..7d31fdd48e 100644
--- a/static/compliance/source/universal/deterministic-testing.yaml
+++ b/static/compliance/source/universal/deterministic-testing.yaml
@@ -923,6 +923,7 @@ phases:
         sample_request:
           intent: "comply test — initiate deterministic SI session"
           identity:
+            consent_granted: true
             user_type: 'consumer'
           supported_capabilities:
             response_formats:
diff --git a/tests/storyboard-sample-request-schema-allowlist.json b/tests/storyboard-sample-request-schema-allowlist.json
index fbea072aa3..0fb4bc44fe 100644
--- a/tests/storyboard-sample-request-schema-allowlist.json
+++ b/tests/storyboard-sample-request-schema-allowlist.json
@@ -1,49 +1,4 @@
 {
   "$comment": "Known storyboard sample_request schema drift, grandfathered before the lint was turned on. Each entry fingerprints the violation; new drift in a listed step fails the lint, and fixed drift that leaves an entry stale also fails (so follow-up PRs must remove entries as they fix fixtures). Regenerate with `node scripts/lint-storyboard-sample-request-schema.cjs --write-allowlist` after a real fix — defaults to shrink-only. Pass `--allow-grow` only when adding a deliberate, newly-identified drift is the explicit intent; never hand-edit to silence a new violation.",
-  "entries": {
-    "protocols/governance/index.yaml#report_outcome/report_plan_outcome": {
-      "schema": "governance/report-plan-outcome-request.json",
-      "errors": [
-        "type@/outcome:string",
-        "enum@/outcome"
-      ]
-    },
-    "protocols/sponsored-intelligence/index.yaml#offering_discovery/si_get_offering": {
-      "schema": "sponsored-intelligence/si-get-offering-request.json",
-      "errors": [
-        "required@/:offering_id"
-      ]
-    },
-    "protocols/sponsored-intelligence/index.yaml#session_lifecycle/si_initiate_session": {
-      "schema": "sponsored-intelligence/si-initiate-session-request.json",
-      "errors": [
-        "required@/:identity"
-      ]
-    },
-    "specialisms/governance-delivery-monitor/index.yaml#drift_recheck/check_governance_drift": {
-      "schema": "governance/check-governance-request.json",
-      "errors": [
-        "additionalProperties@/:account",
-        "additionalProperties@/:media_buy_id"
-      ]
-    },
-    "specialisms/governance-delivery-monitor/index.yaml#initial_approval/check_governance_approved": {
-      "schema": "governance/check-governance-request.json",
-      "errors": [
-        "additionalProperties@/:account"
-      ]
-    },
-    "specialisms/governance-spend-authority/index.yaml#governance_check_conditions/check_governance_conditions": {
-      "schema": "governance/check-governance-request.json",
-      "errors": [
-        "additionalProperties@/:account"
-      ]
-    },
-    "universal/deterministic-testing.yaml#deterministic_session/initiate_session": {
-      "schema": "sponsored-intelligence/si-initiate-session-request.json",
-      "errors": [
-        "required@/identity:consent_granted"
-      ]
-    }
-  }
+  "entries": {}
 }