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fix(anthropic): send tool_choice none instead of stripping tools #12379

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fix(anthropic): send tool_choice none instead of stripping tools #12379

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3 changes: 2 additions & 1 deletion packages/anthropic/src/anthropic-messages-api.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -434,7 +434,8 @@ export type AnthropicTool =

export type AnthropicToolChoice =
| { type: 'auto' | 'any'; disable_parallel_tool_use?: boolean }
| { type: 'tool'; name: string; disable_parallel_tool_use?: boolean };
| { type: 'tool'; name: string; disable_parallel_tool_use?: boolean }
| { type: 'none' };

export type AnthropicContainer = {
id?: string | null;
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11 changes: 9 additions & 2 deletions packages/anthropic/src/anthropic-prepare-tools.test.ts
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Expand Up @@ -1020,8 +1020,15 @@ describe('prepareTools', () => {
toolChoice: { type: 'none' },
supportsStructuredOutput: true,
});
expect(result.tools).toBeUndefined();
expect(result.toolChoice).toBeUndefined();
expect(result.tools).toEqual([
{
cache_control: undefined,
name: 'testFunction',
description: 'Test',
input_schema: {},
},
]);
expect(result.toolChoice).toEqual({ type: 'none' });
});

it('should handle tool choice "tool"', async () => {
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8 changes: 6 additions & 2 deletions packages/anthropic/src/anthropic-prepare-tools.ts
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Expand Up @@ -331,8 +331,12 @@ export async function prepareTools({
betas,
};
case 'none':
// Anthropic does not support 'none' tool choice, so we remove the tools:
return { tools: undefined, toolChoice: undefined, toolWarnings, betas };
return {
tools: anthropicTools,
toolChoice: { type: 'none' as const },
toolWarnings,
betas,
};
case 'tool':
return {
tools: anthropicTools,
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