Fix/minimax-tool-call-id-string: Coerce all tool call IDs to strings regardless of the model/provider

.changeset/thin-forks-draw.md

@@ -0,0 +1,5 @@
+---
+"kilo-code": patch
+---
+
+Fix tool use failure for providers returning numeric tool call IDs (e.g. MiniMax) by coercing ID to string in the shared stream parser

src/core/assistant-message/NativeToolCallParser.ts

@@ -87,7 +87,11 @@ export class NativeToolCallParser {
 		arguments?: string
 	}): ToolCallStreamEvent[] {
 		const events: ToolCallStreamEvent[] = []
-		const { index, id, name, arguments: args } = chunk
+		// kilocode_change start: Some providers (e.g. MiniMax) return tool call id as a number; coerce to string.
+		const { index, id: rawId, name, arguments: args } = chunk
+
+		const id = rawId != null ? String(rawId) : undefined
+		// kilocode_change end
 
 		let tracked = this.rawChunkTracker.get(index)
 

src/core/assistant-message/__tests__/NativeToolCallParser.spec.ts

@@ -238,4 +238,51 @@ describe("NativeToolCallParser", () => {
 			})
 		})
 	})
+
+	// kilocode_change start
+	describe("processRawChunk", () => {
+		it("should coerce numeric tool call id to string", () => {
+			const events = NativeToolCallParser.processRawChunk({
+				index: 0,
+				id: 42 as unknown as string,
+				name: "read_file",
+				arguments: '{"path":"test.ts"}',
+			})
+
+			expect(events).toHaveLength(2) // start + delta
+			expect(events[0]).toMatchObject({
+				type: "tool_call_start",
+				id: "42",
+				name: "read_file",
+			})
+			expect(typeof events[0].id).toBe("string")
+		})
+
+		it("should leave undefined id as undefined", () => {
+			const events = NativeToolCallParser.processRawChunk({
+				index: 0,
+				id: undefined,
+				name: "read_file",
+			})
+
+			// No id means no tracking is initialized, so no events emitted
+			expect(events).toHaveLength(0)
+		})
+
+		it("should pass through string id unchanged", () => {
+			const events = NativeToolCallParser.processRawChunk({
+				index: 0,
+				id: "call_abc123",
+				name: "read_file",
+			})
+
+			expect(events).toHaveLength(1)
+			expect(events[0]).toMatchObject({
+				type: "tool_call_start",
+				id: "call_abc123",
+				name: "read_file",
+			})
+		})
+	})
+	// kilocode_change end
 })