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Merge pull request #2102 from NousResearch/hermes/hermes-6757a563

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fix(tools,cli): normalise MCP schemas + expand session list columns
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Teknium 2026-03-19 19:06:56 -07:00 • committed by GitHub
commit d8081790f3
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3 changed files with 61 additions and 12 deletions
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20
tools/mcp_tool.py
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@ -605,7 +605,9 @@ class SamplingHandler:
"function": {
"name": getattr(t, "name", ""),
"description": getattr(t, "description", "") or "",
"parameters": getattr(t, "inputSchema", {}) or {},
"parameters": _normalize_mcp_input_schema(
getattr(t, "inputSchema", None)
),
},
}
for t in server_tools
@ -1213,6 +1215,17 @@ def _make_check_fn(server_name: str):
# Discovery & registration
# ---------------------------------------------------------------------------
def _normalize_mcp_input_schema(schema: dict | None) -> dict:
"""Normalize MCP input schemas for LLM tool-calling compatibility."""
if not schema:
return {"type": "object", "properties": {}}
if schema.get("type") == "object" and "properties" not in schema:
return {**schema, "properties": {}}
return schema
def _convert_mcp_schema(server_name: str, mcp_tool) -> dict:
"""Convert an MCP tool listing to the Hermes registry schema format.
@ -1231,10 +1244,7 @@ def _convert_mcp_schema(server_name: str, mcp_tool) -> dict:
return {
"name": prefixed_name,
"description": mcp_tool.description or f"MCP tool {mcp_tool.name} from {server_name}",
"parameters": mcp_tool.inputSchema if mcp_tool.inputSchema else {
"type": "object",
"properties": {},
},
"parameters": _normalize_mcp_input_schema(mcp_tool.inputSchema),
}