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Langfuse

Ingest and query LLM traces, manage prompts and datasets, and run Langfuse evaluations and experiments.

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AI-assisted documentation13 min read

This documentation is compiled from our integration source code, internal specs for Langfuse, its official API documentation and anonymized requests logs we collect from our support team[2].

Open Langfuse on WEXTL →

Connecting Langfuse takes an active account plus an API access token from your account settings — no other setup is required.[3]

  • HostingselectRequired

    Langfuse Cloud region or your self-hosted deployment.

    [1]
  • Base URLurl

    Self-hosted API origin including /api/public — e.g. https://langfuse.example.com/api/public.

    [1]
  • Public KeypasswordRequired
  • Secret KeypasswordRequired
  1. Log in to your WEXTL account, add the Langfuse node module to your workflow, and click Create new credential.
  2. Optional: In the Credential name field, enter a name for the credential.
  3. Enter the authentication credentials you copied from your Langfuse account, or follow the on-screen instructions to create the credential.
  4. If prompted, authenticate your account and confirm access.
  5. If you want to make changes to your credential in the future, follow the steps in Manage credentials →

Notes

Credentials are org-scoped; share them with teammates from the Credentials picker on any of its nodes.For detailed information on connecting an application, see Connect an application →

Get Annotation QueueSearch
Input fields[3]
FieldType
Queue IDRequired
choice
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Annotation Queue ItemSearch
Input fields[3]
FieldType
Queue IDRequired
choice
Item IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Blob Storage IntegrationSearch
Input fields[3]
FieldType
Integration IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get CommentSearch
Input fields[3]
FieldType
Comment IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get DatasetSearch
Input fields[3]
FieldType
Dataset NameRequired
choice
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Dataset ItemSearch
Input fields[3]
FieldType
Dataset item IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Dataset RunSearch
Input fields[3]
FieldType
Dataset NameRequired
choice
Run IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Evaluation RuleSearch
Input fields[3]
FieldType
Rule IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get EvaluatorSearch
Input fields[3]
FieldType
Evaluator IDRequired
choice
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Evaluator VersionsSearch
Input fields[3]
FieldType
Evaluator IDRequired
choice
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get MediaSearch
Input fields[3]
FieldType
Media IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get MetricsSearch
Input fields[3]
FieldType
Metrics queryRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get ProjectsSearch
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get PromptSearch
Input fields[3]
FieldType
Prompt nameRequired
choice
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get Prompt VersionSearch
Input fields[3]
FieldType
Prompt nameRequired
choice
VersionRequired
number
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get ScoreSearch
Input fields[3]
FieldType
Score IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get SessionSearch
Input fields[3]
FieldType
Session IDRequired
choice
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Get TraceSearch
Input fields[3]
FieldType
Trace IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Annotation Queue ItemsSearch
Input fields[3]
FieldType
Queue IDRequired
choice
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Annotation QueuesSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Blob Storage IntegrationsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List CommentsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Dataset ItemsSearch
Input fields[3]
FieldType
Dataset Namechoice
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Dataset RunsSearch
Input fields[3]
FieldType
Dataset NameRequired
choice
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List DatasetsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Evaluation RulesSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List EvaluatorsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List Experiment ItemsSearch
Input fields[3]
FieldType
Experiment IDRequired
text
From start timeRequired
date
To start timedate
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List ExperimentsSearch
Input fields[3]
FieldType
From start timeRequired
date
To start timedate
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List LLM ConnectionsSearch
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List ObservationsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List PromptsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List ScoresSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List SessionsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
List TracesSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Add Annotation Queue ItemAction
Input fields[3]
FieldType
Queue IDRequired
choice
Object IDRequired
text
Object typeRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create Annotation QueueAction
Input fields[3]
FieldType
NameRequired
text
Descriptiontext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create CommentAction
Input fields[3]
FieldType
Project IDRequired
text
ContentRequired
text
Object IDtext
Object typetext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create DatasetAction
Input fields[3]
FieldType
NameRequired
text
Descriptiontext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create Dataset ItemAction
Input fields[3]
FieldType
Dataset NameRequired
choice
Inputtext
Expected outputtext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create Evaluation RuleAction
Input fields[3]
FieldType
NameRequired
text
ConfigRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create EvaluatorAction
Input fields[3]
FieldType
NameRequired
text
Configtext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create PromptAction
Input fields[3]
FieldType
NameRequired
text
PromptRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create ScoreAction
Input fields[3]
FieldType
Trace IDtext
NameRequired
text
ValueRequired
number
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Create TraceAction
Input fields[3]
FieldType
Nametext
Inputtext
Outputtext
Metadatatext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete Annotation Queue AssignmentsAction
Input fields[3]
FieldType
Queue IDRequired
choice
User IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete Blob Storage IntegrationAction
Input fields[3]
FieldType
Integration IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete Dataset ItemAction
Input fields[3]
FieldType
Dataset item IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete Dataset RunAction
Input fields[3]
FieldType
Dataset NameRequired
choice
Run IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete Evaluation RuleAction
Input fields[3]
FieldType
Rule IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete EvaluatorAction
Input fields[3]
FieldType
Evaluator IDRequired
choice
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete LLM ConnectionAction
Input fields[3]
FieldType
ProviderRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete PromptAction
Input fields[3]
FieldType
Prompt nameRequired
choice
Versionnumber
Labeltext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete ScoreAction
Input fields[3]
FieldType
Score IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Delete TraceAction
Input fields[3]
FieldType
Trace IDRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Ingest Traces (OpenTelemetry)Action
Input fields[3]
FieldType
OTLP payloadRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Make an API Calluniversal
Input fields[3]
FieldType
URLRequired
text
MethodRequired
choice
Headersarray
Headerobject
Query Stringarray
Parameterobject
Bodytext
Output fields[3]
FieldType
Bodytext
Headersobject
Status codenumber
Submit FeedbackAction
Input fields[3]
FieldType
Trace IDRequired
text
Scorenumber
Commenttext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Update Annotation Queue ItemAction
Input fields[3]
FieldType
Queue IDRequired
choice
Item IDRequired
text
Statustext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Update Blob Storage IntegrationAction
Input fields[3]
FieldType
ConfigRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Update Evaluation RuleAction
Input fields[3]
FieldType
Rule IDRequired
text
Configtext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Update EvaluatorAction
Input fields[3]
FieldType
Evaluator IDRequired
choice
Configtext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Update LLM ConnectionAction
Input fields[3]
FieldType
ProviderRequired
text
ConfigRequired
text
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext
Update Prompt Version LabelsAction
Input fields[3]
FieldType
Prompt nameRequired
choice
VersionRequired
number
New labelsRequired
array
Labeltext
Output fields[3]
FieldType
IDtext
Nametext
Statustext
Created atdate
Updated atdate
Datatext

Look for Langfuse templates in the WEXTL template library.

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  1. WEXTL® Langfuse Source Code connector implementation.
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Last updated: Sep 3, 2026 17:50