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nicohrubec merged 2 commits into from
Sep 23, 2026
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docs(javascript): Document LangChain embeddings support #19569

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docs(javascript): Document LangChain embeddings support
nicohrubec Sep 22, 2026
10b6f97
docs(javascript): Keep LangChain version additions scoped to embeddings
nicohrubec Sep 22, 2026
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20 changes: 20 additions & 0 deletions docs/platforms/javascript/common/agent-tracing/langchain.mdx
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Expand Up @@ -68,6 +68,15 @@ The integration automatically instruments the following LangChain runnable metho
- `stream()` - Streaming execution
- `batch()` - Batch execution

### Embeddings

The integration captures `gen_ai.embeddings` spans for `embedQuery()` and `embedDocuments()` calls from these provider packages:

- `@langchain/openai`
- `@langchain/google-genai`
- `@langchain/mistralai`
- `@langchain/google-vertexai`

### Providers

The automatic instrumentation supports the following LangChain provider packages:
Expand All @@ -82,3 +91,14 @@ The automatic instrumentation supports the following LangChain provider packages
## Supported Versions

- `langchain`: `>=0.1.0 <2.0.0`

Automatic embeddings instrumentation supports these package versions:

| Package | Supported Versions |
| -------------------------- | ------------------ |
| `@langchain/openai` | `>=0.1.0 <2.0.0` |
| `@langchain/google-genai` | `>=0.1.0 <3.0.0` |
| `@langchain/mistralai` | `>=0.1.0 <2.0.0` |
| `@langchain/google-common` | `>=0.1.0 <3.0.0` |

For `@langchain/google-vertexai`, the version requirement applies to its `@langchain/google-common` dependency, which implements the embedding methods.
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