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Glassray connects to LangSmith as a pull integration: you provide an API key, region, and a project, and Glassray fetches new traces on a sync cadence. It’s one of four trace integrations - the others are Langfuse, PostHog, and OpenTelemetry.

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Connect

Open Sources

In the dashboard, go to Settings → Sources and add LangSmith.

Enter your API key and region

Provide your LangSmith API key and region. If you’re self-hosted, also set your host URL. How do I create a LangSmith API key?

Pick a project

Glassray lists your tracing projects - choose the one to pull from. The bound project is fixed after connect; to switch, connect a new source.

Glassray verifies and syncs

Glassray verifies the credentials and starts pulling new traces on a cadence.
Your LangSmith credentials are stored in WorkOS Vault, never in Glassray’s database. The connected source row only holds a reference to the vaulted secret.

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Filtering

A source can carry an optional filter so only the runs you care about are pulled - narrow by trace name and scope. Filtering is applied at ingest, and changes are go-forward (re-sync to apply a new filter). See Traces.
Prefer to push instead of pull? Use OpenTelemetry. Once traces land, head to Flows or Ask Glassray.