diff --git a/plugins/libplugin.c b/plugins/libplugin.c
index 5e25535c8..3f607e89e 100644
--- a/plugins/libplugin.c
+++ b/plugins/libplugin.c
@@ -583,6 +583,14 @@ static const jsmntok_t *sync_req(const tal_t *ctx,
 	return contents;
 }
 
+const jsmntok_t *jsonrpc_request_sync(const tal_t *ctx, struct plugin *plugin,
+				      const char *method,
+				      const struct json_out *params TAKES,
+				      const char **resp)
+{
+	return sync_req(ctx, plugin, method, params, resp);
+}
+
 /* Returns contents of scanning guide on 'result' */
 static const char *rpc_scan_core(const tal_t *ctx,
 				 struct plugin *plugin,
diff --git a/plugins/libplugin.h b/plugins/libplugin.h
index ac3313d3e..1c09a7800 100644
--- a/plugins/libplugin.h
+++ b/plugins/libplugin.h
@@ -478,4 +478,11 @@ void plugin_set_memleak_handler(struct plugin *plugin,
 						 struct htable *memtable));
 #endif /* DEVELOPER */
 
+/* Synchronously call a JSON-RPC method and return its contents and
+ * the parser token. */
+const jsmntok_t *jsonrpc_request_sync(const tal_t *ctx, struct plugin *plugin,
+				      const char *method,
+				      const struct json_out *params TAKES,
+				      const char **resp);
+
 #endif /* LIGHTNING_PLUGINS_LIBPLUGIN_H */