fix(zoo-gateway): enable image attach when model supports vision (#897)

* fix(zoo-gateway): enable image attach from live vision model tags

Prefer models-API vision tags over the stale hardcoded allowlist so Zoo Gateway (and Vercel AI Gateway) correctly enable image attachment for models like Claude Sonnet 4.5.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(zoo-gateway): drop unused eslint-disable that failed CI lint

CI does not flag no-var on the ambient global declaration, so the disable became an unused-directive warning.

Co-authored-by: Cursor <cursoragent@cursor.com>

* chore(zoo-gateway): remove redundant vision-capability comments

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: JamesRobert20

packages/types/src/providers/vercel-ai-gateway.ts

@@ -53,12 +53,14 @@ export const VERCEL_AI_GATEWAY_VISION_AND_TOOLS_MODELS = new Set([
 	"anthropic/claude-3-sonnet",
 	"anthropic/claude-3.5-sonnet",
 	"anthropic/claude-3.7-sonnet",
+	"anthropic/claude-haiku-4.5",
 	"anthropic/claude-opus-4",
 	"anthropic/claude-opus-4.1",
 	"anthropic/claude-opus-4.5",
 	"anthropic/claude-opus-4.6",
 	"anthropic/claude-fable-5",
 	"anthropic/claude-sonnet-4",
+	"anthropic/claude-sonnet-4.5",
 	"anthropic/claude-sonnet-4.6",
 	"anthropic/claude-sonnet-5",
 	"google/gemini-1.5-flash",
@@ -85,6 +87,9 @@ export const VERCEL_AI_GATEWAY_VISION_AND_TOOLS_MODELS = new Set([
 	"openai/gpt-4.5-preview",
 	"openai/gpt-4o",
 	"openai/gpt-4o-mini",
+	"openai/gpt-5",
+	"openai/gpt-5-mini",
+	"openai/gpt-5-nano",
 	"openai/gpt-oss-120b",
 	"openai/gpt-oss-20b",
 	"openai/o3",

src/api/providers/fetchers/__tests__/vercel-ai-gateway.spec.ts

@@ -269,6 +269,39 @@ describe("Vercel AI Gateway Fetchers", () => {
 			)
 		})
 
+		it("prefers live vision tags over hardcoded allowlists", () => {
+			const taggedVision = parseVercelAiGatewayModel({
+				id: "anthropic/claude-sonnet-4.5",
+				model: {
+					...baseModel,
+					id: "anthropic/claude-sonnet-4.5",
+					tags: ["tool-use", "vision"],
+				},
+			})
+			expect(taggedVision.supportsImages).toBe(true)
+
+			const taggedTextOnly = parseVercelAiGatewayModel({
+				id: "anthropic/claude-sonnet-4",
+				model: {
+					...baseModel,
+					id: "anthropic/claude-sonnet-4",
+					tags: ["tool-use"],
+				},
+			})
+			expect(taggedTextOnly.supportsImages).toBe(false)
+		})
+
+		it("falls back to allowlists when tags are absent", () => {
+			const result = parseVercelAiGatewayModel({
+				id: "anthropic/claude-sonnet-4.5",
+				model: {
+					...baseModel,
+					id: "anthropic/claude-sonnet-4.5",
+				},
+			})
+			expect(result.supportsImages).toBe(true)
+		})
+
 		it("handles missing cache pricing", () => {
 			const modelNoCachePricing = {
 				...baseModel,

src/api/providers/fetchers/__tests__/zoo-gateway.spec.ts

@@ -159,6 +159,28 @@ describe("Zoo Gateway Fetchers", () => {
 	})
 
 	describe("parseZooGatewayModel", () => {
+		it("enables image attachment from Zoo Gateway vision tags", () => {
+			const result = parseZooGatewayModel({
+				id: "anthropic/claude-sonnet-4.5",
+				model: {
+					id: "anthropic/claude-sonnet-4.5",
+					object: "model",
+					owned_by: "anthropic",
+					name: "Claude Sonnet 4.5",
+					context_window: 200000,
+					max_tokens: 64000,
+					type: "language",
+					tags: ["tool-use", "vision"],
+					pricing: {
+						input: "3.00",
+						output: "15.00",
+					},
+				},
+			})
+
+			expect(result.supportsImages).toBe(true)
+		})
+
 		it("delegates to the vercel-ai-gateway parser", () => {
 			const result = parseZooGatewayModel({
 				id: "anthropic/claude-sonnet-4",

src/api/providers/fetchers/vercel-ai-gateway.ts

@@ -34,6 +34,7 @@ const vercelAiGatewayModelSchema = z.object({
 	context_window: z.number(),
 	max_tokens: z.number(),
 	type: z.string(),
+	tags: z.array(z.string()).optional(),
 	pricing: vercelAiGatewayPricingSchema,
 })
 
@@ -99,8 +100,9 @@ export const parseVercelAiGatewayModel = ({ id, model }: { id: string; model: Ve
 	const cacheReadsPrice = model.pricing?.input_cache_read ? parseApiPrice(model.pricing?.input_cache_read) : undefined
 
 	const supportsPromptCache = typeof cacheWritesPrice !== "undefined" && typeof cacheReadsPrice !== "undefined"
-	const supportsImages =
-		VERCEL_AI_GATEWAY_VISION_ONLY_MODELS.has(id) || VERCEL_AI_GATEWAY_VISION_AND_TOOLS_MODELS.has(id)
+	const supportsImages = Array.isArray(model.tags)
+		? model.tags.includes("vision")
+		: VERCEL_AI_GATEWAY_VISION_ONLY_MODELS.has(id) || VERCEL_AI_GATEWAY_VISION_AND_TOOLS_MODELS.has(id)
 
 	const modelInfo: ModelInfo = {
 		maxTokens: model.max_tokens,