Fix 406 error in MCP tool execution - add Accept header
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The /mcp/call_tool endpoint was returning 406 "Not Acceptable" error because the request didn't include an Accept header. Fixed by adding "Accept": "application/json" to the request headers. Error message was: "Not Acceptable: Client must accept application/json" 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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@@ -88,7 +88,8 @@ async def execute_mcp_tool(tool_name: str, arguments: dict) -> str:
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base_url = LITELLM_API_BASE.rstrip('/')
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base_url = LITELLM_API_BASE.rstrip('/')
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headers = {
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headers = {
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"Authorization": f"Bearer {LITELLM_API_KEY}",
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"Authorization": f"Bearer {LITELLM_API_KEY}",
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"Content-Type": "application/json"
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"Content-Type": "application/json",
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"Accept": "application/json"
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}
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}
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debug_log(f"Executing MCP tool: {tool_name} with args: {arguments}")
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debug_log(f"Executing MCP tool: {tool_name} with args: {arguments}")
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