Summary

The Vercel AI SDK exports stable embed() and embedMany() core functions for generating vector embeddings, but neither the wrapper (wrapAISDK) nor the auto-instrumentation plugin instruments them. Calls to these functions produce no Braintrust spans. By contrast, OpenAI's embeddings.create() is fully instrumented in this repo across all three layers (wrapper, auto-instrumentation config, and plugin).

What is missing

• Wrapper (js/src/wrappers/ai-sdk/ai-sdk.ts): wrapAISDK only wraps generateText, streamText, generateObject, streamObject, and Agent class methods. No handling of embed or embedMany.
• Auto-instrumentation config (js/src/auto-instrumentations/configs/ai-sdk.ts): Only defines configs for generateText, streamText, generateObject, streamObject, and Agent variants. No config for embed or embedMany.
• Channels (js/src/instrumentation/plugins/ai-sdk-channels.ts): No channel definitions for embed or embedMany.
• Plugin (js/src/instrumentation/plugins/ai-sdk-plugin.ts): No handler for embedding calls.

Upstream reference

• AI SDK embed() reference: https://ai-sdk.dev/docs/reference/ai-sdk-core/embed
• AI SDK embedMany() reference: https://ai-sdk.dev/docs/reference/ai-sdk-core/embed-many
• Both are stable core functions (not experimental), available since AI SDK v3.0.0.
• embed() returns { embedding, value, usage, warnings, response }.
• embedMany() returns { embeddings, values, usage, warnings, responses }.

Braintrust docs status

The Braintrust tracing guide lists "Vercel AI SDK" as a supported integration but does not enumerate which AI SDK functions are covered. embed/embedMany are not mentioned (not_found).

• https://www.braintrust.dev/docs/guides/tracing

Precedent in this repo

OpenAI embeddings are instrumented in all three layers:

• Wrapper: js/src/wrappers/oai.ts (wrapEmbeddings)
• Auto-instrumentation config: js/src/auto-instrumentations/configs/openai.ts
• Plugin: js/src/instrumentation/plugins/openai-plugin.ts

Google GenAI embeddings are tracked as a separate gap in #1620.

Local files inspected

• js/src/wrappers/ai-sdk/ai-sdk.ts
• js/src/auto-instrumentations/configs/ai-sdk.ts
• js/src/instrumentation/plugins/ai-sdk-channels.ts
• js/src/instrumentation/plugins/ai-sdk-plugin.ts
• js/src/vendor-sdk-types/ai-sdk-common.ts