diff --git a/internal/services/steelthreadtesting/definitions.go b/internal/services/steelthreadtesting/definitions.go
index 819ab34d4f..6e1819b9e0 100644
--- a/internal/services/steelthreadtesting/definitions.go
+++ b/internal/services/steelthreadtesting/definitions.go
@@ -386,4 +386,55 @@ var steelThreadTestCases = []steelThreadTestCase{
 			},
 		},
 	},
+	{
+		name:     "basic bulk checks",
+		datafile: "document-with-a-few-relationships.yaml",
+		operations: []steelThreadOperationCase{
+			{
+				name:          "basic bulk checks",
+				operationName: "bulkCheckPermissions",
+				arguments: map[string]any{
+					"check_requests": []string{
+						"document:doc-1#view@user:user-0",
+						"document:doc-1#view@user:user-1",
+						"document:doc-1#view@user:user-2",
+						"document:doc-2#view@user:user-0",
+						"document:doc-2#view@user:user-1",
+						"document:doc-2#view@user:user-2",
+						"document:doc-3#view@user:user-0",
+						"document:doc-3#view@user:user-1",
+						"document:doc-3#view@user:user-2",
+					},
+				},
+			},
+		},
+	},
+	{
+		name:     "bulk checks with traits",
+		datafile: "document-with-traits.yaml",
+		operations: []steelThreadOperationCase{
+			{
+				name:          "bulk checks",
+				operationName: "bulkCheckPermissions",
+				arguments: map[string]any{
+					"check_requests": []string{
+						"document:firstdoc#view@user:tom",
+						"document:firstdoc#view@user:fred",
+						"document:seconddoc#view@user:tom",
+						"document:seconddoc#view@user:fred",
+						`document:seconddoc#view@user:tom[unused:{"somecondition": 41}]`,
+						`document:seconddoc#view@user:fred[unused:{"somecondition": 41}]`,
+						`document:seconddoc#view@user:tom[unused:{"somecondition": 42}]`,
+						`document:seconddoc#view@user:fred[unused:{"somecondition": 42}]`,
+						"document:thirddoc#view@user:tom",
+						"document:thirddoc#view@user:fred",
+						`document:thirddoc#view@user:tom[unused:{"somecondition": 41}]`,
+						`document:thirddoc#view@user:fred[unused:{"somecondition": 41}]`,
+						`document:thirddoc#view@user:tom[unused:{"somecondition": 42}]`,
+						`document:thirddoc#view@user:fred[unused:{"somecondition": 42}]`,
+					},
+				},
+			},
+		},
+	},
 }
diff --git a/internal/services/steelthreadtesting/operations.go b/internal/services/steelthreadtesting/operations.go
index 5c1240a75c..575636fbba 100644
--- a/internal/services/steelthreadtesting/operations.go
+++ b/internal/services/steelthreadtesting/operations.go
@@ -328,11 +328,71 @@ func bulkImportExportRelationships(parameters map[string]any, client v1.Permissi
 	return exportedRels, nil
 }
 
+func bulkCheckPermissions(parameters map[string]any, client v1.PermissionsServiceClient) (any, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+
+	itemStrings := parameters["check_requests"].([]string)
+	checkRequests := make([]*v1.CheckBulkPermissionsRequestItem, 0, len(itemStrings))
+	for _, itemString := range itemStrings {
+		parsed, err := tuple.ParseV1Rel(itemString)
+		if err != nil {
+			return nil, err
+		}
+
+		var context *structpb.Struct
+		if parsed.GetOptionalCaveat() != nil {
+			context = parsed.GetOptionalCaveat().Context
+		}
+
+		checkRequests = append(checkRequests, &v1.CheckBulkPermissionsRequestItem{
+			Resource:   parsed.Resource,
+			Permission: parsed.Relation,
+			Subject:    parsed.Subject,
+			Context:    context,
+		})
+	}
+
+	resp, err := client.CheckBulkPermissions(ctx, &v1.CheckBulkPermissionsRequest{
+		Items: checkRequests,
+		Consistency: &v1.Consistency{
+			Requirement: &v1.Consistency_FullyConsistent{
+				FullyConsistent: true,
+			},
+		},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	respItems := make([]yaml.Node, 0)
+	for index, pair := range resp.Pairs {
+		prefix := itemStrings[index] + " -> "
+		if pair.GetItem() != nil {
+			resultStr := pair.GetItem().Permissionship.String()
+			respItems = append(respItems, yaml.Node{
+				Kind:  yaml.ScalarNode,
+				Value: prefix + resultStr,
+				Style: yaml.SingleQuotedStyle,
+			})
+		} else {
+			respItems = append(respItems, yaml.Node{
+				Kind:  yaml.ScalarNode,
+				Value: prefix + pair.GetError().Message,
+				Style: yaml.SingleQuotedStyle,
+			})
+		}
+	}
+
+	return respItems, nil
+}
+
 var operations = map[string]stOperation{
 	"lookupSubjects":                lookupSubjects,
 	"lookupResources":               lookupResources,
 	"cursoredLookupResources":       cursoredLookupResources,
 	"bulkImportExportRelationships": bulkImportExportRelationships,
+	"bulkCheckPermissions":          bulkCheckPermissions,
 }
 
 func formatResolvedResource(resource *v1.LookupResourcesResponse) string {
diff --git a/internal/services/steelthreadtesting/steelresults/basic-bulk-checks-basic-bulk-checks-results.yaml b/internal/services/steelthreadtesting/steelresults/basic-bulk-checks-basic-bulk-checks-results.yaml
new file mode 100644
index 0000000000..63cf569b61
--- /dev/null
+++ b/internal/services/steelthreadtesting/steelresults/basic-bulk-checks-basic-bulk-checks-results.yaml
@@ -0,0 +1,10 @@
+---
+- 'document:doc-1#view@user:user-0 -> PERMISSIONSHIP_HAS_PERMISSION'
+- 'document:doc-1#view@user:user-1 -> PERMISSIONSHIP_HAS_PERMISSION'
+- 'document:doc-1#view@user:user-2 -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:doc-2#view@user:user-0 -> PERMISSIONSHIP_HAS_PERMISSION'
+- 'document:doc-2#view@user:user-1 -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:doc-2#view@user:user-2 -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:doc-3#view@user:user-0 -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:doc-3#view@user:user-1 -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:doc-3#view@user:user-2 -> PERMISSIONSHIP_NO_PERMISSION'
diff --git a/internal/services/steelthreadtesting/steelresults/bulk-checks-with-traits-bulk-checks-results.yaml b/internal/services/steelthreadtesting/steelresults/bulk-checks-with-traits-bulk-checks-results.yaml
new file mode 100644
index 0000000000..2d824753ab
--- /dev/null
+++ b/internal/services/steelthreadtesting/steelresults/bulk-checks-with-traits-bulk-checks-results.yaml
@@ -0,0 +1,15 @@
+---
+- 'document:firstdoc#view@user:tom -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:firstdoc#view@user:fred -> PERMISSIONSHIP_HAS_PERMISSION'
+- 'document:seconddoc#view@user:tom -> PERMISSIONSHIP_CONDITIONAL_PERMISSION'
+- 'document:seconddoc#view@user:fred -> PERMISSIONSHIP_CONDITIONAL_PERMISSION'
+- 'document:seconddoc#view@user:tom[unused:{"somecondition": 41}] -> PERMISSIONSHIP_HAS_PERMISSION'
+- 'document:seconddoc#view@user:fred[unused:{"somecondition": 41}] -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:seconddoc#view@user:tom[unused:{"somecondition": 42}] -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:seconddoc#view@user:fred[unused:{"somecondition": 42}] -> PERMISSIONSHIP_HAS_PERMISSION'
+- 'document:thirddoc#view@user:tom -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:thirddoc#view@user:fred -> PERMISSIONSHIP_CONDITIONAL_PERMISSION'
+- 'document:thirddoc#view@user:tom[unused:{"somecondition": 41}] -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:thirddoc#view@user:fred[unused:{"somecondition": 41}] -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:thirddoc#view@user:tom[unused:{"somecondition": 42}] -> PERMISSIONSHIP_NO_PERMISSION'
+- 'document:thirddoc#view@user:fred[unused:{"somecondition": 42}] -> PERMISSIONSHIP_HAS_PERMISSION'
diff --git a/internal/services/steelthreadtesting/testdata/document-with-traits.yaml b/internal/services/steelthreadtesting/testdata/document-with-traits.yaml
new file mode 100644
index 0000000000..7d67f3a6a4
--- /dev/null
+++ b/internal/services/steelthreadtesting/testdata/document-with-traits.yaml
@@ -0,0 +1,22 @@
+---
+schema: |+
+  use expiration
+
+  definition user {}
+
+  caveat somecaveat(somesecret int, somecondition int) {
+    somecondition == somesecret
+  }
+
+  definition document {
+    relation viewer: user with expiration | user with somecaveat | user with somecaveat and expiration
+    permission view = viewer
+  }
+
+relationships: |
+  document:firstdoc#viewer@user:tom[expiration:2022-01-02T12:23:34Z]
+  document:firstdoc#viewer@user:fred[expiration:2322-01-02T12:23:34Z]
+  document:seconddoc#viewer@user:tom[somecaveat:{"somesecret":41}]
+  document:seconddoc#viewer@user:fred[somecaveat:{"somesecret":42}]
+  document:thirddoc#viewer@user:tom[somecaveat:{"somesecret":41}][expiration:2022-01-02T12:23:34Z]
+  document:thirddoc#viewer@user:fred[somecaveat:{"somesecret":42}][expiration:2322-01-02T12:23:34Z]