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… on gen_ai spans v10 got `vercel.ai.telemetry.metadata.<key>` attributes from the AI SDK's own OTel spans. In v11, `ai` 4 to 6 go through the orchestrion subscriber, which never read `metadata`, so v11 dropped it. The orchestrion subscriber now passes the metadata to the channel subscriber, which sets it as span attributes when each span starts. The `invoke_agent`, `generate_content` and `embeddings` spans get the attributes, and `execute_tool` spans don't. This matches the AI SDK, which leaves metadata off its `ai.toolCall` spans. fixes JS-3800 fixes #24720 Re: #24706 Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Implementation LGTM. However I'm not sure if we should send vercel.ai specific attributes. I added @andreiborza and @RulaKhaled who know more about status quo on these fields and if we should (re-)add them
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v10 got
vercel.ai.telemetry.metadata.<key>attributes from the AI SDK's own OTel spans. In v11,ai4 to 6 go through the orchestrion subscriber, which never readmetadata, so v11 dropped it.The orchestrion subscriber now passes the metadata to the channel subscriber, which sets it as span attributes when each span starts. The
invoke_agent,generate_contentandembeddingsspans get the attributes, andexecute_toolspans don't. This matches the AI SDK, which leaves metadata off itsai.toolCallspans.fixes JS-3800
fixes #24720
Re: #24706