diff --git a/changelog/18625.txt b/changelog/18625.txt
new file mode 100644
index 000000000..526d6b63e
--- /dev/null
+++ b/changelog/18625.txt
@@ -0,0 +1,3 @@
+```release-note:improvement
+openapi: add openapi response definitions to /sys/seal endpoints
+```
\ No newline at end of file
diff --git a/vault/logical_system_paths.go b/vault/logical_system_paths.go
index 656df7566..c0ebe478f 100644
--- a/vault/logical_system_paths.go
+++ b/vault/logical_system_paths.go
@@ -958,6 +958,11 @@ func (b *SystemBackend) rekeyPaths() []*framework.Path {
 			Operations: map[logical.Operation]framework.OperationHandler{
 				logical.UpdateOperation: &framework.PathOperation{
 					Summary: "Seal the Vault.",
+					Responses: map[int][]framework.Response{
+						http.StatusNoContent: {{
+							Description: "OK",
+						}},
+					},
 				},
 			},
 			HelpSynopsis:    strings.TrimSpace(sysHelp["seal"][0]),
@@ -980,6 +985,77 @@ func (b *SystemBackend) rekeyPaths() []*framework.Path {
 			Operations: map[logical.Operation]framework.OperationHandler{
 				logical.UpdateOperation: &framework.PathOperation{
 					Summary: "Unseal the Vault.",
+					Responses: map[int][]framework.Response{
+						http.StatusOK: {{
+							// unseal returns `vault.SealStatusResponse` struct
+							Fields: map[string]*framework.FieldSchema{
+								"type": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"initialized": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"sealed": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"t": {
+									Type:     framework.TypeInt,
+									Required: true,
+								},
+								"n": {
+									Type:     framework.TypeInt,
+									Required: true,
+								},
+								"progress": {
+									Type:     framework.TypeInt,
+									Required: true,
+								},
+								"nonce": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"version": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"build_date": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"migration": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"cluster_name": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"cluster_id": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"recovery_seal": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"storage_type": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"hcp_link_status": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"hcp_link_resource_ID": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+							},
+						}},
+					},
 				},
 			},
 
@@ -1058,6 +1134,77 @@ func (b *SystemBackend) statusPaths() []*framework.Path {
 				logical.ReadOperation: &framework.PathOperation{
 					Callback: b.handleSealStatus,
 					Summary:  "Check the seal status of a Vault.",
+					Responses: map[int][]framework.Response{
+						http.StatusOK: {{
+							// unseal returns `vault.SealStatusResponse` struct
+							Fields: map[string]*framework.FieldSchema{
+								"type": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"initialized": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"sealed": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"t": {
+									Type:     framework.TypeInt,
+									Required: true,
+								},
+								"n": {
+									Type:     framework.TypeInt,
+									Required: true,
+								},
+								"progress": {
+									Type:     framework.TypeInt,
+									Required: true,
+								},
+								"nonce": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"version": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"build_date": {
+									Type:     framework.TypeString,
+									Required: true,
+								},
+								"migration": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"cluster_name": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"cluster_id": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"recovery_seal": {
+									Type:     framework.TypeBool,
+									Required: true,
+								},
+								"storage_type": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"hcp_link_status": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+								"hcp_link_resource_ID": {
+									Type:     framework.TypeString,
+									Required: false,
+								},
+							},
+						}},
+					},
 				},
 			},