diff --git a/.quixos-subtree-source.json b/.quixos-subtree-source.json
index 7d02465..8d00114 100644
--- a/.quixos-subtree-source.json
+++ b/.quixos-subtree-source.json
@@ -1,7 +1,7 @@
 {
   "version": 1,
   "sourceRepo": "https://gitea-external.egads.tutti.syntaxblitz.net/quixos/quixos",
-  "sourceCommit": "dd7527da2714f3b0941ed908357fd82e98f45bc4",
+  "sourceCommit": "452f3c48aadceaf08e56ae9c226e98a7f9df4900",
   "sourcePath": "quixos-protocol",
   "exportName": "quixos-protocol",
   "mirrorRemote": "https://gitea-external.egads.tutti.syntaxblitz.net/quixos/quixos-protocol.git"
diff --git a/src/capability-model/validation.ts b/src/capability-model/validation.ts
index 518dff0..7a7fe5d 100644
--- a/src/capability-model/validation.ts
+++ b/src/capability-model/validation.ts
@@ -1526,7 +1526,6 @@ const validateBoundDependencies = (
           );
           break;
         }
-        validateAttachmentAccess(issues, attachment, params.conformance, `${path}.binding.edgeTypeId`);
         const projection = edgeProjection(attachment.attachment, edgeBinding.projectionId);
         if (!projection) {
           issue(
@@ -1537,6 +1536,12 @@ const validateBoundDependencies = (
           );
           break;
         }
+        // Exporting traversal never exports writes or subscription ownership.
+        const publicRead =
+          projection.endpoint.publicTraversal &&
+          requirement.primitives.length > 0 &&
+          requirement.primitives.every((primitive) => primitive === "resolve");
+        if (!publicRead) validateAttachmentAccess(issues, attachment, params.conformance, `${path}.binding.edgeTypeId`);
         if (projection.target.keyType && requirement.primitives.includes("connect"))
           issue(
             issues,
diff --git a/test/capability-model.test.ts b/test/capability-model.test.ts
index 28a3248..fffbae5 100644
--- a/test/capability-model.test.ts
+++ b/test/capability-model.test.ts
@@ -2,6 +2,7 @@ import assert from "node:assert/strict";
 import { test } from "node:test";
 import {
   compileWorkspaceRevision,
+  capabilityId,
   computeCapabilityClosure,
   resolveOperationPlan,
   validateWorkspaceRevision,
@@ -197,6 +198,62 @@ test("public traversal permits a native inverse read without exporting mutation
   expectIssue(workspace, "private-attachment-access");
 });
 
+test("public traversal exports only the selected read-only package edge port", () => {
+  const workspace = makeValidCapabilityWorkspace();
+  const exportDefinition = workspace.packageImports
+    .flatMap((pkg) => pkg.exports)
+    .find((entry) => entry.id === fixtureId.summaryGetExport)!;
+  const port = {
+    id: capabilityId.dependencyPort("port:summary:owner"),
+    displayName: "owner",
+    requirement: {
+      kind: "edge" as const,
+      target: { kind: "interface" as const, interfaceRevisionId: fixtureId.namedV1 },
+      cardinality: "exactly-one" as const,
+      primitives: ["resolve" as const],
+    },
+  };
+  exportDefinition.dependencyPorts.push(port);
+  const binding = conformance(workspace, fixtureId.projectSummaryConformance).operationBindings[0].binding;
+  assert.ok(binding.kind === "package");
+  binding.dependencies.push({
+    portId: port.id,
+    binding: {
+      kind: "edge",
+      edgeTypeId: fixtureId.projectOwner,
+      projectionId: fixtureId.projectOwnerProjection,
+    },
+  });
+  const edge = conformance(workspace, fixtureId.projectOwnedConformance).privateAttachments.find(
+    (entry) => entry.id === fixtureId.projectOwner,
+  );
+  assert.ok(edge?.kind === "edge");
+  const endpoint = edge.endpoints.find((entry) => entry.projectionId === fixtureId.projectOwnerProjection)!;
+  expectIssue(workspace, "private-attachment-access");
+
+  // Publicity of the opposite projection does not grant this receiver access.
+  edge.endpoints.find((entry) => entry !== endpoint)!.publicTraversal = true;
+  expectIssue(workspace, "private-attachment-access");
+  endpoint.publicTraversal = true;
+  assert.deepEqual(validateWorkspaceRevision(workspace), []);
+  const compiled = compileWorkspaceRevision(workspace);
+  assert.ok(compiled.ok);
+  const plan = resolveOperationPlan(compiled.plan, fixtureId.project, fixtureId.summaryV1, fixtureId.summaryGet);
+  assert.ok(plan?.kind === "package");
+  assert.deepEqual(plan.dependencies.find((entry) => entry.port.id === port.id)?.port.requirement, port.requirement);
+
+  for (const primitive of ["connect", "disconnect", "watch-start", "watch-stop"] as const) {
+    const mutated = structuredClone(workspace);
+    const requirement = mutated.packageImports
+      .flatMap((pkg) => pkg.exports)
+      .find((entry) => entry.id === fixtureId.summaryGetExport)!
+      .dependencyPorts.find((entry) => entry.id === port.id)!.requirement;
+    assert.ok(requirement.kind === "edge");
+    requirement.primitives.push(primitive);
+    expectIssue(mutated, "private-attachment-access");
+  }
+});
+
 test("native state and edge providers must match operation shape", () => {
   const stateWorkspace = makeValidCapabilityWorkspace();
   const state = conformance(stateWorkspace, fixtureId.projectNamedConformance).operationBindings[0]!.binding;