guard missing model in kimi compat

Author: jahooma

web/src/llm-api/__tests__/kimi-tool-compat.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'bun:test'
 
-import { addKimiToolCompatibilityFields } from '../kimi-tool-compat'
+import { addKimiToolCompatibilityFields, isKimiModel } from '../kimi-tool-compat'
 
 import type { ChatCompletionRequestBody } from '../types'
 
@@ -102,3 +102,11 @@ describe('addKimiToolCompatibilityFields', () => {
     expect(addKimiToolCompatibilityFields(body)).toEqual(body)
   })
 })
+
+describe('isKimiModel', () => {
+  it('matches only Moonshot model ids', () => {
+    expect(isKimiModel('moonshotai/kimi-k2.6')).toBe(true)
+    expect(isKimiModel('anthropic/claude-sonnet-4.5')).toBe(false)
+    expect(isKimiModel(undefined)).toBe(false)
+  })
+})

web/src/llm-api/canopywave.ts

@@ -9,7 +9,7 @@ import {
   extractRequestMetadata,
   insertMessageToBigQuery,
 } from './helpers'
-import { addKimiToolCompatibilityFields } from './kimi-tool-compat'
+import { addKimiToolCompatibilityFields, isKimiModel } from './kimi-tool-compat'
 
 import type { UsageData } from './helpers'
 import type { InsertMessageBigqueryFn } from '@codebuff/common/types/contracts/bigquery'
@@ -89,7 +89,7 @@ function createCanopyWaveRequest(params: {
   fetch: typeof globalThis.fetch
 }) {
   const { body, originalModel, fetch } = params
-  const providerBody = originalModel.startsWith('moonshotai/')
+  const providerBody = isKimiModel(originalModel)
     ? addKimiToolCompatibilityFields(body)
     : body
   const canopywaveBody: Record<string, unknown> = {

web/src/llm-api/kimi-tool-compat.ts

@@ -1,5 +1,9 @@
 import type { ChatCompletionRequestBody } from './types'
 
+export function isKimiModel(model: unknown): model is string {
+  return typeof model === 'string' && model.startsWith('moonshotai/')
+}
+
 function getToolCallNamesById(
   messages: ChatCompletionRequestBody['messages'],
 ): Map<string, string> {

web/src/llm-api/openrouter.ts

@@ -9,7 +9,7 @@ import {
   extractRequestMetadata,
   insertMessageToBigQuery,
 } from './helpers'
-import { addKimiToolCompatibilityFields } from './kimi-tool-compat'
+import { addKimiToolCompatibilityFields, isKimiModel } from './kimi-tool-compat'
 import {
   OpenRouterErrorResponseSchema,
   OpenRouterStreamChatCompletionChunkSchema,
@@ -62,7 +62,7 @@ function createOpenRouterRequest(params: {
   fetch: typeof globalThis.fetch
 }) {
   const { body, openrouterApiKey, fetch } = params
-  const providerBody = body.model.startsWith('moonshotai/')
+  const providerBody = isKimiModel(body.model)
     ? addKimiToolCompatibilityFields(body)
     : body