0xbyt4 4e3a8a0637 fix: handle empty choices in MCP sampling callback ...

SamplingHandler.__call__ accessed response.choices[0] without checking
if the list was non-empty. LLM APIs can return empty choices on content
filtering, provider errors, or rate limits, causing an unhandled
IndexError that propagates to the MCP SDK and may crash the connection.

Add a defensive guard that returns a proper ErrorData when choices is
empty, None, or missing. Includes three test cases covering all
variants.

2026-03-10 02:24:53 +03:00

87 KiB

Raw Blame History

View Raw