Integrations
Langfuse
Sync PromptVault prompt versions into Langfuse so traces can reference the exact label that ran.
Mirror prompt versions into Langfuse so traces can reference the exact label that ran.
What It Does
When a prompt is created or published, PromptVault can sync the prompt source and version label into Langfuse. This lets a trace answer "which version of support-triage produced this output?"
Draft-only saves are skipped.
Configuration
| Field | Required | Default |
|---|---|---|
| Host | yes | https://cloud.langfuse.com |
| Public key | yes | - |
| Secret key | yes | - |
For Langfuse Cloud, leave the host as the default. For a custom Langfuse host, enter your own URL.
The keys come from your Langfuse project under Settings -> API keys.
Test
Use Test after connecting to confirm the credentials can read project metadata.
Event Handling
| Event | Behavior |
|---|---|
prompt.created | Syncs the initial prompt version. |
prompt.published to live | Syncs with the live version label. |
prompt.published to staging | Syncs with the staging version label. |
prompt.rolled_back | Skipped. Langfuse keeps its own prompt history. |
prompt.deleted | Skipped. |