feat(sdk): client, annotations

packages/sample-app/src/sample_decorators.ts

@@ -47,6 +47,17 @@ traceloop.withAssociationProperties(
     const completion = await sampleOpenAI.completion("TypeScript");
     console.log(completion);
 
-    await traceloop.reportScore({ chat_id: "789" }, 1);
+    const client = traceloop.getClient();
+    await client.userFeedback.create({
+      annotationTask: "sample-annotation-task",
+      entity: {
+        id: "12345",
+      },
+      tags: {
+        sentiment: "positive",
+        score: 0.85,
+        tones: ["happy", "sad"],
+      },
+    });
   },
 );

packages/traceloop-sdk/src/lib/client/annotation/base-annotation.ts

@@ -0,0 +1,37 @@
+import { TraceloopClient } from "../traceloop-client";
+import { AnnotationCreateOptions } from "../../interfaces/annotations.interface";
+
+export type AnnotationFlow = "user_feedback";
+
+/**
+ * Base class for handling annotation operations with the Traceloop API.
+ * @internal
+ */
+export class BaseAnnotation {
+  constructor(
+    protected client: TraceloopClient,
+    protected flow: AnnotationFlow,
+  ) {}
+
+  /**
+   * Creates a new annotation.
+   *
+   * @param options - The annotation creation options
+   * @returns Promise resolving to the fetch Response
+   */
+  async create(options: AnnotationCreateOptions) {
+    return await this.client.post(
+      `/v2/annotation-tasks/${options.annotationTask}/annotations`,
+      {
+        entity_instance_id: options.entity.id,
+        tags: options.tags,
+        source: "sdk",
+        flow: this.flow,
+        actor: {
+          type: "service",
+          id: this.client.appName,
+        },
+      },
+    );
+  }
+}

packages/traceloop-sdk/src/lib/client/annotation/user-feedback.ts

@@ -0,0 +1,37 @@
+import { BaseAnnotation } from "./base-annotation";
+import { TraceloopClient } from "../traceloop-client";
+import { AnnotationCreateOptions } from "../../interfaces/annotations.interface";
+
+/**
+ * Handles user feedback annotations with the Traceloop API.
+ */
+export class UserFeedback extends BaseAnnotation {
+  constructor(client: TraceloopClient) {
+    super(client, "user_feedback");
+  }
+
+  /**
+   * Creates a new annotation for a specific task and entity.
+   *
+   * @param options - The options for creating an annotation
+   * @returns Promise resolving to the fetch Response
+   *
+   * @example
+   * ```typescript
+   * await client.annotation.create({
+   *   annotationTask: 'sample-annotation-task',
+   *   entity: {
+   *     id: '123456',
+   *   },
+   *   tags: {
+   *     sentiment: 'positive',
+   *     score: 0.85,
+   *     tones: ['happy', 'surprised']
+   *   }
+   * });
+   * ```
+   */
+  override async create(options: AnnotationCreateOptions) {
+    return await super.create(options);
+  }
+}

packages/traceloop-sdk/src/lib/client/traceloop-client.ts

@@ -0,0 +1,51 @@
+import { TraceloopClientOptions } from "../interfaces";
+import { version } from "../../../package.json";
+import { UserFeedback } from "./annotation/user-feedback";
+
+/**
+ * The main client for interacting with Traceloop's API.
+ * This client can be used either directly or through the singleton pattern via configuration.
+ *
+ * @example
+ * // Direct usage
+ * const client = new TraceloopClient('your-api-key');
+ *
+ * @example
+ * // Through configuration (recommended)
+ * initialize({ apiKey: 'your-api-key', appName: 'your-app' });
+ * const client = getClient();
+ */
+export class TraceloopClient {
+  private version: string = version;
+  public appName: string;
+  private baseUrl: string;
+  private apiKey: string;
+
+  /**
+   * Creates a new instance of the TraceloopClient.
+   *
+   * @param options - Configuration options for the client
+   */
+  constructor(options: TraceloopClientOptions) {
+    this.apiKey = options.apiKey;
+    this.appName = options.appName;
+    this.baseUrl =
+      options.baseUrl ||
+      process.env.TRACELOOP_BASE_URL ||
+      "https://api.traceloop.com";
+  }
+
+  userFeedback = new UserFeedback(this);
+
+  async post(path: string, body: Record<string, unknown>) {
+    return await fetch(`${this.baseUrl}${path}`, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+        Authorization: `Bearer ${this.apiKey}`,
+        "X-Traceloop-SDK-Version": this.version,
+      },
+      body: JSON.stringify(body),
+    });
+  }
+}

packages/traceloop-sdk/src/lib/configuration/index.ts

@@ -3,15 +3,26 @@ import { validateConfiguration } from "./validation";
 import { startTracing } from "../tracing";
 import { initializeRegistry } from "../prompts/registry";
 import { diag, DiagConsoleLogger, DiagLogLevel } from "@opentelemetry/api";
+import { TraceloopClient } from "../client/traceloop-client";
 
 export let _configuration: InitializeOptions | undefined;
+let _client: TraceloopClient | undefined;
 
 /**
- * Initializes the Traceloop SDK.
+ * Initializes the Traceloop SDK and creates a singleton client instance if API key is provided.
  * Must be called once before any other SDK methods.
  *
  * @param options - The options to initialize the SDK. See the {@link InitializeOptions} for details.
+ * @returns TraceloopClient - The singleton client instance if API key is provided, otherwise undefined.
  * @throws {InitializationError} if the configuration is invalid or if failed to fetch feature data.
+ *
+ * @example
+ * ```typescript
+ * initialize({
+ *   apiKey: 'your-api-key',
+ *   appName: 'your-app',
+ * });
+ * ```
  */
 export const initialize = (options: InitializeOptions) => {
   if (_configuration) {
@@ -77,6 +88,15 @@ export const initialize = (options: InitializeOptions) => {
 
   startTracing(_configuration);
   initializeRegistry(_configuration);
+  if (options.apiKey) {
+    _client = new TraceloopClient({
+      apiKey: options.apiKey,
+      baseUrl: options.baseUrl,
+      appName: options.appName!,
+    });
+    return _client;
+  }
+  return;
 };
 
 const logLevelToOtelLogLevel = (
@@ -93,3 +113,26 @@ const logLevelToOtelLogLevel = (
       return DiagLogLevel.ERROR;
   }
 };
+
+/**
+ * Gets the singleton instance of the TraceloopClient.
+ * The SDK must be initialized with an API key before calling this function.
+ *
+ * @returns The TraceloopClient singleton instance
+ * @throws {Error} if the SDK hasn't been initialized or was initialized without an API key
+ *
+ * @example
+ * ```typescript
+ * const client = getClient();
+ * await client.annotation.create({ annotationTask: 'taskId', entityInstanceId: 'entityId', tags: { score: 0.9 } });
+ * ```
+ */
+export const getClient = (): TraceloopClient => {
+  if (!_client) {
+    throw new Error(
+      "Traceloop must be initialized before getting client, Call initialize() first." +
+        "If you already called initialize(), make sure you have an api key.",
+    );
+  }
+  return _client;
+};

packages/traceloop-sdk/src/lib/interfaces/annotations.interface.ts

@@ -0,0 +1,38 @@
+/**
+ * Represents an entity in the system that can be annotated.
+ * An entity is typically a unit of content or interaction that needs to be tracked or evaluated.
+ * It is reported as an association property before the annotation is created.
+ */
+export interface Entity {
+  /**
+   * Unique identifier for the entity.
+   * This could be a user ID, conversation ID, or any other unique identifier in your system.
+   */
+  id: string;
+}
+
+/**
+ * Configuration options for creating a new annotation.
+ * Annotations are used to attach metadata, feedback, or evaluation results to specific entities.
+ */
+export interface AnnotationCreateOptions {
+  /**
+   * The identifier of the annotation task.
+   * The ID or slug of the annotation task, Can be found at app.traceloop.com/annotation_tasks/:annotationTaskId   */
+  annotationTask: string;
+
+  /**
+   * The entity to be annotated.
+   * Contains the entity's identifier and optional type information.
+   * Be sure to report the entity instance ID as the association property before
+   * in order to correctly correlate the annotation to the relevant context.
+   */
+  entity: Entity;
+
+  /**
+   * Key-value pairs of annotation data, should match the tags defined in the annotation task
+   */
+  tags: Record<string, TagValue>;
+}
+
+export type TagValue = string | number | string[];

packages/traceloop-sdk/src/lib/interfaces/index.ts

@@ -1,2 +1,10 @@
 export * from "./initialize-options.interface";
 export * from "./prompts.interface";
+export * from "./annotations.interface";
+export * from "./traceloop-client.interface";
+
+export interface TraceloopClientOptions {
+  apiKey: string;
+  appName: string;
+  baseUrl?: string;
+}

packages/traceloop-sdk/src/lib/interfaces/traceloop-client.interface.ts

@@ -0,0 +1,5 @@
+export interface TraceloopClientOptions {
+  apiKey: string;
+  appName: string;
+  baseUrl?: string;
+}

packages/traceloop-sdk/src/lib/node-server-sdk.ts

@@ -1,13 +1,17 @@
 import { initInstrumentations } from "./tracing";
 
 export * from "./errors";
-export { InitializeOptions } from "./interfaces";
-export { initialize } from "./configuration";
+export {
+  InitializeOptions,
+  TraceloopClientOptions,
+  AnnotationCreateOptions,
+} from "./interfaces";
+export { TraceloopClient } from "./client/traceloop-client";
+export { initialize, getClient } from "./configuration";
 export { forceFlush } from "./tracing";
 export * from "./tracing/decorators";
 export * from "./tracing/manual";
 export * from "./tracing/association";
-export * from "./tracing/score";
 export * from "./tracing/custom-metric";
 export * from "./prompts";