--- title: List LLM Observability experiments description: Datadog, the leading service for cloud-scale monitoring. breadcrumbs: Docs > API Reference > LLM Observability --- # List LLM Observability experiments{% #list-llm-observability-experiments %} {% tab title="v2" %} **Note**: This endpoint is in preview and is subject to change. If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/). | Datadog site | API endpoint | | ----------------- | --------------------------------------------------------------- | | ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v2/llm-obs/v1/experiments | | ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v2/llm-obs/v1/experiments | | app.datadoghq.eu | GET https://api.datadoghq.eu/api/v2/llm-obs/v1/experiments | | app.ddog-gov.com | GET https://api.ddog-gov.com/api/v2/llm-obs/v1/experiments | | us2.ddog-gov.com | GET https://api.us2.ddog-gov.com/api/v2/llm-obs/v1/experiments | | app.datadoghq.com | GET https://api.datadoghq.com/api/v2/llm-obs/v1/experiments | | us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v2/llm-obs/v1/experiments | | us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v2/llm-obs/v1/experiments | ### Overview List all LLM Observability experiments sorted by creation date, newest first. ### Arguments #### Query Strings | Name | Type | Description | | ---------------------------- | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | filter[project_id] | string | Filter experiments by project ID. Required if `filter[dataset_id]` is not provided. | | filter[dataset_id] | string | Filter experiments by dataset ID. | | filter[id] | string | Filter experiments by experiment ID. Can be specified multiple times. | | filter[name] | string | Filter experiments by their exact run name. | | filter[experiment] | string | Filter by logical experiment name. This is the `name` field set when creating an experiment through `POST /experiments`. Returns all experiment runs that share the same name, enabling cross-commit and cross-branch comparisons. | | filter[metadata] | string | Filter by JSONB metadata containment. Provide a JSON object string where experiments whose metadata contains all specified key-value pairs are returned. For example: `{"commit":"abc123","branch":"main"}`. | | filter[parent_experiment_id] | string | Filter experiments by the ID of their parent (baseline) experiment. Returns all experiments that were run against the given baseline. Can be specified multiple times. | | filter[is_deleted] | boolean | When `true`, return only soft-deleted experiments. Defaults to `false`. | | include[user_data] | boolean | When `true`, enrich each experiment with its author's user data in the `author` field. | | include[dataset_names] | boolean | When `true`, enrich each experiment with its dataset name in the `dataset_name` field. | | page[cursor] | string | Use the pagination cursor returned in `meta.after` to retrieve the next page of results. | | page[limit] | integer | Maximum number of results to return per page. Values above 5000 are clamped to 5000. Defaults to 5000. | ### Response {% tab title="200" %} OK {% tab title="Model" %} Response containing a list of LLM Observability experiments. | Parent field | Field | Type | Description | | ------------ | ----------------------------- | --------- | ------------------------------------------------------------------------------------------------------------------------- | | | data [*required*] | [object] | List of experiments. | | data | attributes [*required*] | object | Attributes of an LLM Observability experiment. | | attributes | aggregate_data | object | Pre-computed aggregate metrics for this experiment run, including eval score distributions, token costs, and error rates. | | attributes | author | object | User data for the author of an experiment. Only present when `include[user_data]` is `true`. | | author | email | string | Email address of the user. | | author | handle | string | Username or handle associated with the user's Datadog account. | | author | icon | string | URL of the user's icon. | | author | id | string | Unique identifier of the user. | | author | name | string | Display name of the user. | | attributes | config [*required*] | object | Configuration parameters for the experiment. | | attributes | created_at [*required*] | date-time | Timestamp when the experiment was created. | | attributes | dataset_id [*required*] | string | Identifier of the dataset used in this experiment. | | attributes | dataset_name | string | Name of the dataset used in this experiment. Only present when `include[dataset_names]` is `true`. | | attributes | dataset_version | int64 | Version of the dataset used in this experiment. | | attributes | deleted_at | date-time | Timestamp when the experiment was soft-deleted, if applicable. | | attributes | description [*required*] | string | Description of the experiment. | | attributes | error | string | Error message describing why the experiment failed, if applicable. | | attributes | experiment | string | Logical name of the experiment, shared across all runs of the same pipeline. | | attributes | metadata [*required*] | object | Arbitrary metadata associated with the experiment. | | attributes | name [*required*] | string | Name of the experiment. | | attributes | parent_experiment_id | string | Identifier of the parent (baseline) experiment this experiment was run against, if any. | | attributes | project_id [*required*] | string | Identifier of the project this experiment belongs to. | | attributes | run_count | int32 | Expected number of runs for this experiment. | | attributes | status | enum | Execution status of an LLM Observability experiment. Allowed enum values: `running,completed,failed,interrupted` | | attributes | updated_at [*required*] | date-time | Timestamp when the experiment was last updated. | | data | id [*required*] | string | Unique identifier of the experiment. | | data | type [*required*] | enum | Resource type of an LLM Observability experiment. Allowed enum values: `experiments` | | | meta | object | Pagination cursor metadata. | | meta | after | string | Cursor for the next page of results. | {% /tab %} {% tab title="Example" %} ```json { "data": [ { "attributes": { "aggregate_data": {}, "author": { "email": "jane.doe@example.com", "handle": "jane.doe@example.com", "icon": "https://example.com/icon.png", "id": "00000000-0000-0000-0000-000000000010", "name": "Jane Doe" }, "config": {}, "created_at": "2024-01-15T10:30:00Z", "dataset_id": "9f64e5c7-dc5a-45c8-a17c-1b85f0bec97d", "dataset_name": "string", "dataset_version": "integer", "deleted_at": "2019-09-19T10:00:00.000Z", "description": "", "error": "string", "experiment": "my-pipeline", "metadata": {}, "name": "My Experiment v1", "parent_experiment_id": "3fd6b5e0-8910-4b1c-a7d0-5b84de329012", "project_id": "a33671aa-24fd-4dcd-9b33-a8ec7dde7751", "run_count": "integer", "status": "completed", "updated_at": "2024-01-15T10:30:00Z" }, "id": "3fd6b5e0-8910-4b1c-a7d0-5b84de329012", "type": "experiments" } ], "meta": { "after": "string" } } ``` {% /tab %} {% /tab %} {% tab title="400" %} Bad Request {% tab title="Model" %} API error response. | Parent field | Field | Type | Description | | ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- | | | errors [*required*] | [object] | A list of errors. | | errors | detail | string | A human-readable explanation specific to this occurrence of the error. | | errors | meta | object | Non-standard meta-information about the error | | errors | source | object | References to the source of the error. | | source | header | string | A string indicating the name of a single request header which caused the error. | | source | parameter | string | A string indicating which URI query parameter caused the error. | | source | pointer | string | A JSON pointer to the value in the request document that caused the error. | | errors | status | string | Status code of the response. | | errors | title | string | Short human-readable summary of the error. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ { "detail": "Missing required attribute in body", "meta": {}, "source": { "header": "Authorization", "parameter": "limit", "pointer": "/data/attributes/title" }, "status": "400", "title": "Bad Request" } ] } ``` {% /tab %} {% /tab %} {% tab title="401" %} Unauthorized {% tab title="Model" %} API error response. | Parent field | Field | Type | Description | | ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- | | | errors [*required*] | [object] | A list of errors. | | errors | detail | string | A human-readable explanation specific to this occurrence of the error. | | errors | meta | object | Non-standard meta-information about the error | | errors | source | object | References to the source of the error. | | source | header | string | A string indicating the name of a single request header which caused the error. | | source | parameter | string | A string indicating which URI query parameter caused the error. | | source | pointer | string | A JSON pointer to the value in the request document that caused the error. | | errors | status | string | Status code of the response. | | errors | title | string | Short human-readable summary of the error. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ { "detail": "Missing required attribute in body", "meta": {}, "source": { "header": "Authorization", "parameter": "limit", "pointer": "/data/attributes/title" }, "status": "400", "title": "Bad Request" } ] } ``` {% /tab %} {% /tab %} {% tab title="403" %} Forbidden {% tab title="Model" %} API error response. | Parent field | Field | Type | Description | | ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- | | | errors [*required*] | [object] | A list of errors. | | errors | detail | string | A human-readable explanation specific to this occurrence of the error. | | errors | meta | object | Non-standard meta-information about the error | | errors | source | object | References to the source of the error. | | source | header | string | A string indicating the name of a single request header which caused the error. | | source | parameter | string | A string indicating which URI query parameter caused the error. | | source | pointer | string | A JSON pointer to the value in the request document that caused the error. | | errors | status | string | Status code of the response. | | errors | title | string | Short human-readable summary of the error. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ { "detail": "Missing required attribute in body", "meta": {}, "source": { "header": "Authorization", "parameter": "limit", "pointer": "/data/attributes/title" }, "status": "400", "title": "Bad Request" } ] } ``` {% /tab %} {% /tab %} {% tab title="429" %} Too many requests {% tab title="Model" %} API error response. | Field | Type | Description | | ------------------------ | -------- | ----------------- | | errors [*required*] | [string] | A list of errors. | {% /tab %} {% tab title="Example" %} ```json { "errors": [ "Bad Request" ] } ``` {% /tab %} {% /tab %} ### Code Example ##### \# Curl command curl -X GET "https://api.datadoghq.com/api/v2/llm-obs/v1/experiments" \ -H "Accept: application/json" \ -H "DD-API-KEY: ${DD_API_KEY}" \ -H "DD-APPLICATION-KEY: ${DD_APP_KEY}" ##### ```python """ List LLM Observability experiments returns "OK" response """ from datadog_api_client import ApiClient, Configuration from datadog_api_client.v2.api.llm_observability_api import LLMObservabilityApi configuration = Configuration() configuration.unstable_operations["list_llm_obs_experiments"] = True with ApiClient(configuration) as api_client: api_instance = LLMObservabilityApi(api_client) response = api_instance.list_llm_obs_experiments() print(response) ``` #### Instructions First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=python) and then save the example to `example.py` and run following commands: DD_SITE="datadoghq.com" DD_API_KEY="" DD_APP_KEY="" python3 "example.py" ##### ```ruby # List LLM Observability experiments returns "OK" response require "datadog_api_client" DatadogAPIClient.configure do |config| config.unstable_operations["v2.list_llm_obs_experiments".to_sym] = true end api_instance = DatadogAPIClient::V2::LLMObservabilityAPI.new p api_instance.list_llm_obs_experiments() ``` #### Instructions First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=ruby) and then save the example to `example.rb` and run following commands: DD_SITE="datadoghq.com" DD_API_KEY="" DD_APP_KEY="" rb "example.rb" ##### ```go // List LLM Observability experiments returns "OK" response package main import ( "context" "encoding/json" "fmt" "os" "github.com/DataDog/datadog-api-client-go/v2/api/datadog" "github.com/DataDog/datadog-api-client-go/v2/api/datadogV2" ) func main() { ctx := datadog.NewDefaultContext(context.Background()) configuration := datadog.NewConfiguration() configuration.SetUnstableOperationEnabled("v2.ListLLMObsExperiments", true) apiClient := datadog.NewAPIClient(configuration) api := datadogV2.NewLLMObservabilityApi(apiClient) resp, r, err := api.ListLLMObsExperiments(ctx, *datadogV2.NewListLLMObsExperimentsOptionalParameters()) if err != nil { fmt.Fprintf(os.Stderr, "Error when calling `LLMObservabilityApi.ListLLMObsExperiments`: %v\n", err) fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r) } responseContent, _ := json.MarshalIndent(resp, "", " ") fmt.Fprintf(os.Stdout, "Response from `LLMObservabilityApi.ListLLMObsExperiments`:\n%s\n", responseContent) } ``` #### Instructions First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=go) and then save the example to `main.go` and run following commands: DD_SITE="datadoghq.com" DD_API_KEY="" DD_APP_KEY="" go run "main.go" ##### ```java // List LLM Observability experiments returns "OK" response import com.datadog.api.client.ApiClient; import com.datadog.api.client.ApiException; import com.datadog.api.client.v2.api.LlmObservabilityApi; import com.datadog.api.client.v2.model.LLMObsExperimentsResponse; public class Example { public static void main(String[] args) { ApiClient defaultClient = ApiClient.getDefaultApiClient(); defaultClient.setUnstableOperationEnabled("v2.listLLMObsExperiments", true); LlmObservabilityApi apiInstance = new LlmObservabilityApi(defaultClient); try { LLMObsExperimentsResponse result = apiInstance.listLLMObsExperiments(); System.out.println(result); } catch (ApiException e) { System.err.println("Exception when calling LlmObservabilityApi#listLLMObsExperiments"); System.err.println("Status code: " + e.getCode()); System.err.println("Reason: " + e.getResponseBody()); System.err.println("Response headers: " + e.getResponseHeaders()); e.printStackTrace(); } } } ``` #### Instructions First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=java) and then save the example to `Example.java` and run following commands: DD_SITE="datadoghq.com" DD_API_KEY="" DD_APP_KEY="" java "Example.java" ##### ```rust // List LLM Observability experiments returns "OK" response use datadog_api_client::datadog; use datadog_api_client::datadogV2::api_llm_observability::LLMObservabilityAPI; use datadog_api_client::datadogV2::api_llm_observability::ListLLMObsExperimentsOptionalParams; #[tokio::main] async fn main() { let mut configuration = datadog::Configuration::new(); configuration.set_unstable_operation_enabled("v2.ListLLMObsExperiments", true); let api = LLMObservabilityAPI::with_config(configuration); let resp = api .list_llm_obs_experiments(ListLLMObsExperimentsOptionalParams::default()) .await; if let Ok(value) = resp { println!("{:#?}", value); } else { println!("{:#?}", resp.unwrap_err()); } } ``` #### Instructions First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=rust) and then save the example to `src/main.rs` and run following commands: DD_SITE="datadoghq.com" DD_API_KEY="" DD_APP_KEY="" cargo run ##### ```typescript /** * List LLM Observability experiments returns "OK" response */ import { client, v2 } from "@datadog/datadog-api-client"; const configuration = client.createConfiguration(); configuration.unstableOperations["v2.listLLMObsExperiments"] = true; const apiInstance = new v2.LLMObservabilityApi(configuration); apiInstance .listLLMObsExperiments() .then((data: v2.LLMObsExperimentsResponse) => { console.log( "API called successfully. Returned data: " + JSON.stringify(data) ); }) .catch((error: any) => console.error(error)); ``` #### Instructions First [install the library and its dependencies](https://docs.datadoghq.com/api/latest.md?code-lang=typescript) and then save the example to `example.ts` and run following commands: DD_SITE="datadoghq.com" DD_API_KEY="" DD_APP_KEY="" tsc "example.ts" {% /tab %}