chore: bump version to 1.7.10 and update CHANGELOG

- Added tool_calls[].id and type:'function' to argument delta chunks
  so OpenAI-compatible clients can associate argument fragments with
  the correct tool call
- Changed finish_reason from hardcoded 'stop' to 'tool_calls' when
  tool calls were emitted (in flush, response.completed, and final chunk)
- Fixes state desync in agentic clients (OpenCode, Claude Code, etc.)
  where the assistant thinks tools already ran

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [1.7.10] — 2026-03-02
+
+### 🐛 Bug Fixes
+
+- **Streaming Tool Calls (Responses→ChatCompletions)** — Fixed two issues in the `openaiResponsesToOpenAIResponse` translator that broke tool call execution in agentic clients (OpenCode, Claude Code, Cursor, etc.): (1) Argument delta chunks now include `tool_calls[].id` and `type: "function"` so clients can associate argument fragments correctly. (2) `finish_reason` is now `"tool_calls"` instead of hardcoded `"stop"` when tool calls occurred. Fixes #180
+
 ## [1.7.9] — 2026-03-02
 
 ### 🐛 Bug Fixes

open-sse/translator/response/openai-responses.ts

@@ -364,6 +364,7 @@ export function openaiResponsesToOpenAIResponse(chunk, state) {
     // Flush: send final chunk with finish_reason
     if (!state.finishReasonSent && state.started) {
       state.finishReasonSent = true;
+      const hadToolCalls = (state.toolCallIndex || 0) > 0;
       return {
         id: state.chatId || `chatcmpl-${Date.now()}`,
         object: "chat.completion.chunk",
@@ -373,7 +374,7 @@ export function openaiResponsesToOpenAIResponse(chunk, state) {
           {
             index: 0,
             delta: {},
-            finish_reason: "stop",
+            finish_reason: hadToolCalls ? "tool_calls" : "stop",
           },
         ],
       };
@@ -468,6 +469,8 @@ export function openaiResponsesToOpenAIResponse(chunk, state) {
             tool_calls: [
               {
                 index: state.toolCallIndex,
+                id: state.currentToolCallId,
+                type: "function",
                 function: { arguments: argsDelta },
               },
             ],
@@ -517,7 +520,9 @@ export function openaiResponsesToOpenAIResponse(chunk, state) {
 
     if (!state.finishReasonSent) {
       state.finishReasonSent = true;
-      state.finishReason = "stop"; // Mark for usage injection in stream.js
+      const hadToolCalls = (state.toolCallIndex || 0) > 0;
+      const reason = hadToolCalls ? "tool_calls" : "stop";
+      state.finishReason = reason; // Mark for usage injection in stream.js
 
       const finalChunk: Record<string, any> = {
         id: state.chatId,
@@ -528,7 +533,7 @@ export function openaiResponsesToOpenAIResponse(chunk, state) {
           {
             index: 0,
             delta: {},
-            finish_reason: "stop",
+            finish_reason: reason,
           },
         ],
       };

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "1.7.9",
+  "version": "1.7.10",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "1.7.9",
+      "version": "1.7.10",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "1.7.9",
+  "version": "1.7.10",
   "description": "Smart AI Router with auto fallback — route to FREE & cheap models, zero downtime. Works with Cursor, Cline, Claude Desktop, Codex, and any OpenAI-compatible tool.",
   "type": "module",
   "bin": {