diff --git a/.gitignore b/.gitignore
index 552f00b4..edd8c086 100644
--- a/.gitignore
+++ b/.gitignore
@@ -75,3 +75,5 @@ gitbook/README.md
 
 # Refactor backup reference (do not bundle/lint)
 open-sse.old/
+.graphifyignore
+graphify-out/*
diff --git a/open-sse/translator/response/openai-to-claude.js b/open-sse/translator/response/openai-to-claude.js
index e771c154..3998cc84 100644
--- a/open-sse/translator/response/openai-to-claude.js
+++ b/open-sse/translator/response/openai-to-claude.js
@@ -184,7 +184,8 @@ export function openaiToClaudeResponse(chunk, state) {
     for (const tc of delta.tool_calls) {
       const idx = tc.index ?? 0;
 
-      if (tc.id) {
+      // GLM/fireworks repeats id+null-name on every arg chunk; open block once per idx
+      if (tc.id && !state.toolCalls.has(idx)) {
         stopThinkingBlock(state, results);
         stopTextBlock(state, results);