Files
hermes-agent/tools
holny 55c223e247 fix(mcp): probe the list signature instead of masking its TypeError (#104150)
_paginate_full_list wrapped the paginated list call in try/except TypeError
to detect the mcp 1.x calling convention. The same except also caught
TypeErrors raised INSIDE the modern list call — e.g. a server response
decode failure — and retried with the legacy cursor= keyword, replacing the
real error with a misleading 'unexpected keyword argument cursor' and
making genuine MCP pagination failures undiagnosable.

Probe list_method's signature instead (_list_method_accepts_params): the
legacy cursor= fallback fires only when the method genuinely doesn't accept
the mcp 2.0 params= keyword (or takes **kwargs), so a TypeError from inside
the list call propagates to the caller. Regression tests: the decode
TypeError surfaces and the legacy retry doesn't run; a genuinely 1.x-shaped
method keeps using the cursor fallback.
2026-09-07 07:04:52 -07:00
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