Langfuse

Langfuse is an open-source LLM engineering platform for tracing, evaluation and prompt management. With the langfuse destination, every OpenDunes request arrives in your Langfuse project as a trace, with no changes to your code.

Settings#

Add it#

curl https://opendunes.com/v1/observability/destinations \
  -H "Authorization: Bearer $OPENDUNES_MANAGEMENT_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Langfuse",
    "type": "langfuse",
    "config": { "publicKey": "pk-lf-…", "secretKey": "sk-lf-…" }
  }'

What Langfuse receives#

One span per request, OTLP over HTTP at {baseUrl}/api/public/otel/v1/traces, authenticated as publicKey:secretKey. The span carries the gen_ai.* attributes — the model, the provider, the token counts, the cost in DA — the input and output as the observation's input and output, and your trace_name as the trace's name. user and session_id from the request carry over.

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