chore: import upstream snapshot with attribution

apps/sim/tools/kalshi/get_exchange_announcements.ts

@@ -0,0 +1,129 @@
+import {
+  buildKalshiUrl,
+  handleKalshiError,
+  KALSHI_ANNOUNCEMENT_OUTPUT_PROPERTIES,
+} from '@/tools/kalshi/types'
+import type { ToolConfig } from '@/tools/types'
+
+export type KalshiGetExchangeAnnouncementsParams = Record<string, never>
+
+export interface KalshiGetExchangeAnnouncementsResponse {
+  success: boolean
+  output: {
+    announcements: Array<Record<string, unknown>>
+  }
+}
+
+export const kalshiGetExchangeAnnouncementsTool: ToolConfig<
+  KalshiGetExchangeAnnouncementsParams,
+  KalshiGetExchangeAnnouncementsResponse
+> = {
+  id: 'kalshi_get_exchange_announcements',
+  name: 'Get Exchange Announcements from Kalshi',
+  description: 'Retrieve exchange-wide announcements from Kalshi',
+  version: '1.0.0',
+
+  params: {},
+
+  request: {
+    url: () => buildKalshiUrl('/exchange/announcements'),
+    method: 'GET',
+    headers: () => ({
+      'Content-Type': 'application/json',
+    }),
+  },
+
+  transformResponse: async (response: Response) => {
+    const data = await response.json()
+
+    if (!response.ok) {
+      handleKalshiError(data, response.status, 'get_exchange_announcements')
+    }
+
+    return {
+      success: true,
+      output: {
+        announcements: data.announcements || [],
+      },
+    }
+  },
+
+  outputs: {
+    announcements: {
+      type: 'array',
+      description: 'Array of exchange announcement objects',
+      items: {
+        type: 'object',
+        properties: KALSHI_ANNOUNCEMENT_OUTPUT_PROPERTIES,
+      },
+    },
+  },
+}
+
+/**
+ * V2 Response matching Kalshi API exactly
+ */
+export interface KalshiGetExchangeAnnouncementsV2Response {
+  success: boolean
+  output: {
+    announcements: Array<{
+      type: string | null
+      message: string | null
+      delivery_time: string | null
+      status: string | null
+    }>
+  }
+}
+
+export const kalshiGetExchangeAnnouncementsV2Tool: ToolConfig<
+  KalshiGetExchangeAnnouncementsParams,
+  KalshiGetExchangeAnnouncementsV2Response
+> = {
+  id: 'kalshi_get_exchange_announcements_v2',
+  name: 'Get Exchange Announcements from Kalshi V2',
+  description: 'Retrieve exchange-wide announcements from Kalshi (V2 - exact API response)',
+  version: '2.0.0',
+
+  params: {},
+
+  request: {
+    url: () => buildKalshiUrl('/exchange/announcements'),
+    method: 'GET',
+    headers: () => ({
+      'Content-Type': 'application/json',
+    }),
+  },
+
+  transformResponse: async (response: Response) => {
+    const data = await response.json()
+
+    if (!response.ok) {
+      handleKalshiError(data, response.status, 'get_exchange_announcements_v2')
+    }
+
+    const announcements = (data.announcements || []).map((a: Record<string, unknown>) => ({
+      type: a.type ?? null,
+      message: a.message ?? null,
+      delivery_time: a.delivery_time ?? null,
+      status: a.status ?? null,
+    }))
+
+    return {
+      success: true,
+      output: {
+        announcements,
+      },
+    }
+  },
+
+  outputs: {
+    announcements: {
+      type: 'array',
+      description: 'Array of exchange announcement objects',
+      items: {
+        type: 'object',
+        properties: KALSHI_ANNOUNCEMENT_OUTPUT_PROPERTIES,
+      },
+    },
+  },
+}