diff --git a/packages/types/src/providers/anthropic.ts b/packages/types/src/providers/anthropic.ts
index b6c3614eee..70f880a24e 100644
--- a/packages/types/src/providers/anthropic.ts
+++ b/packages/types/src/providers/anthropic.ts
@@ -12,6 +12,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 3.0, // $3 per million input tokens (≤200K context)
 		outputPrice: 15.0, // $15 per million output tokens (≤200K context)
 		cacheWritesPrice: 3.75, // $3.75 per million tokens
@@ -34,6 +35,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 3.0, // $3 per million input tokens (≤200K context)
 		outputPrice: 15.0, // $15 per million output tokens (≤200K context)
 		cacheWritesPrice: 3.75, // $3.75 per million tokens
@@ -56,6 +58,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 5.0, // $5 per million input tokens
 		outputPrice: 25.0, // $25 per million output tokens
 		cacheWritesPrice: 6.25, // $6.25 per million tokens
@@ -68,6 +71,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 15.0, // $15 per million input tokens
 		outputPrice: 75.0, // $75 per million output tokens
 		cacheWritesPrice: 18.75, // $18.75 per million tokens
@@ -80,6 +84,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 15.0, // $15 per million input tokens
 		outputPrice: 75.0, // $75 per million output tokens
 		cacheWritesPrice: 18.75, // $18.75 per million tokens
@@ -92,6 +97,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 3.0, // $3 per million input tokens
 		outputPrice: 15.0, // $15 per million output tokens
 		cacheWritesPrice: 3.75, // $3.75 per million tokens
@@ -105,6 +111,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 3.0, // $3 per million input tokens
 		outputPrice: 15.0, // $15 per million output tokens
 		cacheWritesPrice: 3.75, // $3.75 per million tokens
@@ -116,6 +123,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 3.0, // $3 per million input tokens
 		outputPrice: 15.0, // $15 per million output tokens
 		cacheWritesPrice: 3.75, // $3.75 per million tokens
@@ -127,6 +135,7 @@ export const anthropicModels = {
 		supportsImages: false,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 1.0,
 		outputPrice: 5.0,
 		cacheWritesPrice: 1.25,
@@ -138,6 +147,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 15.0,
 		outputPrice: 75.0,
 		cacheWritesPrice: 18.75,
@@ -149,6 +159,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 0.25,
 		outputPrice: 1.25,
 		cacheWritesPrice: 0.3,
@@ -160,6 +171,7 @@ export const anthropicModels = {
 		supportsImages: true,
 		supportsPromptCache: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		inputPrice: 1.0,
 		outputPrice: 5.0,
 		cacheWritesPrice: 1.25,
diff --git a/packages/types/src/providers/gemini.ts b/packages/types/src/providers/gemini.ts
index e7a73e6d0e..af1c4c70ee 100644
--- a/packages/types/src/providers/gemini.ts
+++ b/packages/types/src/providers/gemini.ts
@@ -11,6 +11,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		supportsReasoningEffort: ["low", "high"],
 		reasoningEffort: "low",
@@ -37,6 +38,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 2.5, // This is the pricing for prompts above 200k tokens.
 		outputPrice: 15,
@@ -65,6 +67,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 2.5, // This is the pricing for prompts above 200k tokens.
 		outputPrice: 15,
@@ -92,6 +95,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 2.5, // This is the pricing for prompts above 200k tokens.
 		outputPrice: 15,
@@ -117,6 +121,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 2.5, // This is the pricing for prompts above 200k tokens.
 		outputPrice: 15,
@@ -146,6 +151,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 0.3,
 		outputPrice: 2.5,
@@ -159,6 +165,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 0.3,
 		outputPrice: 2.5,
@@ -172,6 +179,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 0.3,
 		outputPrice: 2.5,
@@ -187,6 +195,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 0.1,
 		outputPrice: 0.4,
@@ -200,6 +209,7 @@ export const geminiModels = {
 		contextWindow: 1_048_576,
 		supportsImages: true,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsPromptCache: true,
 		inputPrice: 0.1,
 		outputPrice: 0.4,
diff --git a/packages/types/src/providers/openai.ts b/packages/types/src/providers/openai.ts
index a896e5b6ac..0a487fbb9a 100644
--- a/packages/types/src/providers/openai.ts
+++ b/packages/types/src/providers/openai.ts
@@ -10,6 +10,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -29,6 +30,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -51,6 +53,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -69,6 +72,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -86,6 +90,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -107,6 +112,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -128,6 +134,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -145,6 +152,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -163,6 +171,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -176,6 +185,7 @@ export const openAiNativeModels = {
 		maxTokens: 32_768,
 		contextWindow: 1_047_576,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -192,6 +202,7 @@ export const openAiNativeModels = {
 		maxTokens: 32_768,
 		contextWindow: 1_047_576,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -208,6 +219,7 @@ export const openAiNativeModels = {
 		maxTokens: 32_768,
 		contextWindow: 1_047_576,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -224,6 +236,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 2.0,
@@ -241,6 +254,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 2.0,
@@ -253,6 +267,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 2.0,
@@ -265,6 +280,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -282,6 +298,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -294,6 +311,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -306,6 +324,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: false,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -319,6 +338,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: false,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -331,6 +351,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: false,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -343,6 +364,7 @@ export const openAiNativeModels = {
 		maxTokens: 100_000,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 15,
@@ -354,6 +376,7 @@ export const openAiNativeModels = {
 		maxTokens: 32_768,
 		contextWindow: 128_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 15,
@@ -365,6 +388,7 @@ export const openAiNativeModels = {
 		maxTokens: 65_536,
 		contextWindow: 128_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 1.1,
@@ -376,6 +400,7 @@ export const openAiNativeModels = {
 		maxTokens: 16_384,
 		contextWindow: 128_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 2.5,
@@ -390,6 +415,7 @@ export const openAiNativeModels = {
 		maxTokens: 16_384,
 		contextWindow: 128_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: true,
 		supportsPromptCache: true,
 		inputPrice: 0.15,
@@ -404,6 +430,7 @@ export const openAiNativeModels = {
 		maxTokens: 16_384,
 		contextWindow: 200_000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		supportsImages: false,
 		supportsPromptCache: false,
 		inputPrice: 1.5,
@@ -418,6 +445,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -439,6 +467,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -460,6 +489,7 @@ export const openAiNativeModels = {
 		maxTokens: 128000,
 		contextWindow: 400000,
 		supportsNativeTools: true,
+		defaultToolProtocol: "native",
 		includedTools: ["apply_patch"],
 		excludedTools: ["apply_diff", "write_to_file"],
 		supportsImages: true,
@@ -484,6 +514,7 @@ export const openAiModelInfoSaneDefaults: ModelInfo = {
 	inputPrice: 0,
 	outputPrice: 0,
 	supportsNativeTools: true,
+	defaultToolProtocol: "native",
 }
 
 // https://learn.microsoft.com/en-us/azure/ai-services/openai/api-version-deprecation