The answer
If your application agent already sends useful traces to Langfuse or LangSmith, Flowlines can poll the provider read-only. Existing OpenTelemetry can also be routed to Flowlines without replacing the trace store or shipping a proprietary Flowlines application SDK.
MCP observability has a different requirement. The MCP server needs compatible instrumentation at the tool execution boundary. The Flowlines plugin skill reviews the repository and proposed data boundary before guiding that integration.
Compatibility follows the telemetry, not a fixed model list. Flowlines is model and framework agnostic when your stack emits compatible OpenTelemetry traces or stores runs in Langfuse or LangSmith. Verify one representative session whenever a framework maps user, session or tool attributes differently.
In either case, you review the fields that may contain user or customer data and give explicit consent before new instrumentation is added.
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