diff --git a/server/regulatory.graph-importer.test.ts b/server/regulatory.graph-importer.test.ts
new file mode 100644
index 00000000..ee494a8d
--- /dev/null
+++ b/server/regulatory.graph-importer.test.ts
@@ -0,0 +1,170 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { randomUUID } from "node:crypto";
+import { eq, inArray } from "drizzle-orm";
+import { appRouter } from "./routers";
+import { getDb } from "./db";
+import type { TrpcContext } from "./_core/context";
+import { assertDeclarationFormalitiesSatisfied } from "./routers/regulatory";
+import {
+  declarations,
+  declarationFormalities,
+  ogaPermits,
+  regulatoryFormalities,
+  stakeholderMandates,
+  stakeholderRegistrations,
+} from "../drizzle/schema";
+
+function caller(id: number, role: "user" | "customs_officer" = "user") {
+  const context: TrpcContext = {
+    user: {
+      id,
+      openId: `regulatory-graph-${id}`,
+      name: `Regulatory Graph ${id}`,
+      email: `regulatory-graph-${id}@example.test`,
+      loginMethod: "test",
+      role,
+      createdAt: new Date(),
+      updatedAt: new Date(),
+      lastSignedIn: new Date(),
+    },
+    req: { method: "GET", headers: {}, cookies: {} } as TrpcContext["req"],
+    res: { clearCookie: () => undefined, cookie: () => undefined } as unknown as TrpcContext["res"],
+  };
+  return appRouter.createCaller(context);
+}
+
+async function database() {
+  const db = await getDb();
+  if (!db) throw new Error("Postgres is required for regulatory graph tests.");
+  return db;
+}
+
+const created = {
+  declarations: [] as number[],
+  formalities: [] as number[],
+  permits: [] as number[],
+  registrations: [] as number[],
+  mandates: [] as number[],
+};
+
+afterEach(async () => {
+  const db = await database();
+  if (created.declarations.length) {
+    await db.delete(declarationFormalities)
+      .where(inArray(declarationFormalities.declarationId, created.declarations));
+    await db.delete(ogaPermits).where(inArray(ogaPermits.declarationId, created.declarations));
+    await db.delete(declarations).where(inArray(declarations.id, created.declarations));
+  }
+  if (created.formalities.length) {
+    await db.delete(regulatoryFormalities).where(inArray(regulatoryFormalities.id, created.formalities));
+  }
+  if (created.registrations.length) {
+    await db.delete(stakeholderRegistrations).where(inArray(stakeholderRegistrations.id, created.registrations));
+  }
+  if (created.mandates.length) {
+    await db.delete(stakeholderMandates).where(inArray(stakeholderMandates.id, created.mandates));
+  }
+  created.declarations.length = 0;
+  created.formalities.length = 0;
+  created.permits.length = 0;
+  created.registrations.length = 0;
+  created.mandates.length = 0;
+});
+
+describe.sequential("regulatory clearance graph importer identity", () => {
+  it("uses the declaration principal for principal, agent, and customs previews", async () => {
+    const db = await database();
+    const now = new Date();
+    const [declaration] = await db.insert(declarations).values({
+      declarationNumber: `GRAPH-${randomUUID().slice(0, 20)}`,
+      ucr: `GRAPH-UCR-${randomUUID()}`,
+      traderId: 9,
+      principalId: 1,
+      actingAgentId: 2,
+      declarationType: "import",
+      hsCode: "847130",
+      countryOfOrigin: "GH",
+      countryOfDestination: "NG",
+      numberOfPackages: 5,
+      createdAt: now,
+      submittedAt: now,
+    }).returning();
+    created.declarations.push(declaration.id);
+
+    const [formality] = await db.insert(regulatoryFormalities).values({
+      hsCodePrefix: "8471",
+      origin: "GH",
+      destination: "NG",
+      regime: "import",
+      agencyCode: "OGA-GRAPH",
+      agencyName: "Graph Agency",
+      permitType: "GRAPH-PERMIT",
+      requiredQuantity: "5",
+      legalInstrument: "Instrument GRAPH",
+      validFrom: new Date(now.getTime() - 60_000),
+      createdBy: 4,
+    }).returning();
+    created.formalities.push(formality.id);
+
+    const [permit] = await db.insert(ogaPermits).values({
+      declarationId: declaration.id,
+      agencyCode: "OGA-GRAPH",
+      agencyName: "Graph Agency",
+      permitType: "GRAPH-PERMIT",
+      status: "approved",
+      hsCode: "8471",
+      consigneeId: 1,
+      permittedQuantity: "5",
+      validFrom: new Date(now.getTime() - 60_000),
+    }).returning();
+    created.permits.push(permit.id);
+
+    const [mandate] = await db.insert(stakeholderMandates).values({
+      referenceNumber: `GRAPH-MANDATE-${randomUUID().slice(0, 12)}`,
+      principalUserId: 1,
+      agentUserId: 2,
+      validFrom: new Date(now.getTime() - 60_000),
+      validUntil: new Date(now.getTime() + 60_000),
+    }).returning();
+    created.mandates.push(mandate.id);
+
+    const [registration] = await db.insert(stakeholderRegistrations).values({
+      referenceNumber: `GRAPH-AGENT-${randomUUID().slice(0, 12)}`,
+      userId: 2,
+      stakeholderType: "freight_forwarder",
+      organizationName: "Graph Agent",
+      country: "GH",
+      licenseExpiresAt: new Date(now.getTime() + 60_000),
+      status: "approved",
+      approvedBy: 4,
+      approvedAt: now,
+    }).returning();
+    created.registrations.push(registration.id);
+
+    const input = {
+      declarationId: declaration.id,
+      hsCode: declaration.hsCode!,
+      origin: declaration.countryOfOrigin!,
+      destination: declaration.countryOfDestination!,
+      regime: declaration.declarationType,
+      quantity: "5",
+    };
+    for (const preview of [
+      caller(1).regulatory.clearanceGraph(input),
+      caller(2).regulatory.clearanceGraph(input),
+      caller(4, "customs_officer").regulatory.clearanceGraph(input),
+    ]) {
+      const graph = await preview;
+      expect(graph.blocking).toBe(false);
+      expect(graph.obligations).toMatchObject([{
+        satisfied: true,
+        blocking: false,
+        satisfiedByPermitId: permit.id,
+      }]);
+    }
+
+    await expect(assertDeclarationFormalitiesSatisfied(declaration.id)).resolves.toBeUndefined();
+    await expect(caller(3).regulatory.clearanceGraph(input))
+      .rejects.toMatchObject({ code: "FORBIDDEN" });
+  });
+});
diff --git a/server/routers/regulatory.ts b/server/routers/regulatory.ts
index 8ea58662..fcaf8b2e 100644
--- a/server/routers/regulatory.ts
+++ b/server/routers/regulatory.ts
@@ -604,16 +604,32 @@ export const regulatoryRouter = router({
       asAt: z.coerce.date().optional(),
       declarationId: z.number().int().positive().optional(),
     }))
-    .query(async ({ ctx, input }) => clearanceGraph({
-      hsCode: input.hsCode,
-      origin: input.origin,
-      destination: input.destination,
-      regime: input.regime,
-      quantity: input.quantity,
-      importerId: ctx.user.id,
-      declarationId: input.declarationId,
-      at: asDate(input.asAt),
-    })),
+    .query(async ({ ctx, input }) => {
+      let importerId = ctx.user.id;
+      if (input.declarationId) {
+        const db = await requireRegulatoryDb();
+        const [declaration] = await db.select().from(declarations)
+          .where(eq(declarations.id, input.declarationId))
+          .limit(1);
+        if (!declaration) {
+          throw new TRPCError({ code: "NOT_FOUND", message: "Declaration not found." });
+        }
+        if (ctx.user.role !== "admin" && ctx.user.role !== "customs_officer") {
+          await requireDeclarationActor(declaration, ctx.user);
+        }
+        importerId = declaration.principalId ?? declaration.traderId;
+      }
+      return clearanceGraph({
+        hsCode: input.hsCode,
+        origin: input.origin,
+        destination: input.destination,
+        regime: input.regime,
+        quantity: input.quantity,
+        importerId,
+        declarationId: input.declarationId,
+        at: asDate(input.asAt),
+      });
+    }),
 
   allocateQuota: protectedProcedure
     .input(z.object({ quotaId: z.number().int().positive(), declarationId: z.number().int().positive(), quantity: z.string().regex(/^\d+(\.\d{1,3})?$/) }))