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Applies to:


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Summary

Goal: Generate direct UI links to specific model executions in Braintrust when using the AI Proxy without the SDK. Features: Project Logs API, permalink URL construction, event ID retrieval.

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Configuration Steps

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Step 1: Fetch log events

Call the Project Logs API endpoint with your project ID to retrieve log events. 
const projectId = "your-project-id";
const apiKey = "YOUR_API_KEY";

let events = [];

try {
  const response = await fetch(
    `https://api.braintrust.dev/v1/project_logs/${projectId}/fetch`,
    {
      method: "GET",
      headers: {
        Authorization: `Bearer ${apiKey}`,
        "Content-Type": "application/json",
      },
    }
  );

  if (!response.ok) {
    throw new Error(`Request failed: ${response.status} ${response.statusText}`);
  }

  const data = await response.json();
  events = data.events ?? [];
} catch (error) {
  console.error("Failed to fetch project logs:", error);
}

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Step 2: Extract event IDs

Each event in the response contains an id field needed for the permalink. 
for (const { id: eventId, span_attributes } of events) {
  const eventName = span_attributes?.name;
  console.log(`${eventName}: ${eventId}`);
}
Construct the UI link using the project ID and event ID. 
function buildPermalink(projectId, eventId) {
  const APP_URL = "https://www.braintrust.dev";
  const ORG_NAME = "your-org-name";
  return `${APP_URL}/app/${ORG_NAME}/object?object_type=project_logs&object_id=${projectId}&id=${eventId}`;
}

const permalink = buildPermalink(projectId, eventId);
console.log(permalink)