fix(anthropic): strip server-side tools from count_tokens requests (#5702)#5705
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MohammadYusif wants to merge 1 commit into
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fix(anthropic): strip server-side tools from count_tokens requests (#5702)#5705MohammadYusif wants to merge 1 commit into
MohammadYusif wants to merge 1 commit into
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…ydantic#5702) The Anthropic count_tokens endpoint rejects server-side tools such as CodeExecutionTool, WebSearchTool, and WebFetchTool with a 400 error ("Server tools are not supported in the count_tokens endpoint"). `_messages_count_tokens` was forwarding the full tool list produced by `_add_native_tools` — including those server tools — unchanged to the endpoint. The fix filters out any tool whose `type` field starts with a server-tool prefix before the call, preserving all function/memory/ tool-search/MCP tools that the endpoint does accept. Adds a unit test that verifies each server-side native tool is excluded from the count_tokens payload.
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Thanks for your interest in this issue! However, there are already open PRs addressing issue #5702: #5704, #5703. To avoid duplicate efforts, this PR has been closed. If you'd like to contribute, you can review the existing PRs or share your thoughts on issue #5702. If you believe the existing PRs are inactive, please comment on the issue and a maintainer can reassess. |
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The Anthropic count_tokens endpoint rejects server-side tools such as
CodeExecutionTool, WebSearchTool, and WebFetchTool with a 400 error
("Server tools are not supported in the count_tokens endpoint").
_messages_count_tokenswas forwarding the full tool list produced by_add_native_tools— including those server tools — unchanged to theendpoint. The fix filters out any tool whose
typefield starts with aserver-tool prefix before the call, preserving all function/memory/
tool-search/MCP tools that the endpoint does accept.
Adds a unit test that verifies each server-side native tool is excluded
from the count_tokens payload.
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