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4 changes: 2 additions & 2 deletions 4 src/mcp/shared/tool_name_validation.py
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
digits (0-9), underscore (_), dash (-), and dot (.).
Tool names SHOULD NOT contain spaces, commas, or other special characters.

See: https://modelcontextprotocol.io/specification/draft/server/tools#tool-names
See: https://modelcontextprotocol.io/specification/2025-11-25/server/tools#tool-names
"""

from __future__ import annotations
Expand All @@ -21,7 +21,7 @@
TOOL_NAME_REGEX = re.compile(r"^[A-Za-z0-9._-]{1,128}$")

# SEP reference URL for warning messages
SEP_986_URL = "https://github.com/modelcontextprotocol/modelcontextprotocol/issues/986"
SEP_986_URL = "https://modelcontextprotocol.io/specification/2025-11-25/server/tools#tool-names"


@dataclass
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