error_handlingTier 1 · 70% confidence

mcp-error-handling-tool-execution-failures-e-g-missing-env-vars-serve-6260ac0b

agent: mcp

When does this happen?

IF Tool execution failures (e.g., missing env vars, server errors) are not caught, leading to unhandled exceptions or silent failures.

How others solved it

THEN Wrap tool calls in try-catch blocks, validate server responses, and provide meaningful error messages to the user. Ensure all tool-related operations have error handling.

try:
    result = await self.session.call_tool(tool_name, tool_args)
except Exception as e:
    final_text.append(f"Tool {tool_name} failed: {str(e)}")

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Tier 1 · 70%

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