Introduction

BuildE2E API Reference (v1)

Features

Extract content from any webpage in markdown or JSON format.

Generate PDFs from HTML content or any URL.

Run code securely in isolated Code Sandbox environments.

All API requests should be made to:

https://api.builde2e.com/api/v1

All API requests require authentication via an API key. Include your API key in the request header:

Authorization: Bearer uc-YOUR-API-KEY

Alternatively, you can use the x-api-key header:

x-api-key: uc-YOUR-API-KEY

The API uses standard HTTP status codes to indicate success or failure:

Code	Description
200	Successful operation
201	Resource created (Browser Sandbox sessions)
400	Bad Request - Invalid request parameters
401	Unauthorized - Missing or invalid API key
402	Payment Required - Insufficient wallet balance
403	Forbidden - Access denied to this resource
404	Not Found - Resource does not exist
429	Too Many Requests - Rate limit exceeded
500	Internal Server Error
503	Service Unavailable - No capacity available

Rate limits are enforced per API key, per endpoint:

When you exceed the rate limit, you will receive a 429 response. The response headers include:

X-RateLimit-Limit: 10
X-RateLimit-Remaining: 0
X-RateLimit-Reset: 1706745600
Retry-After: 1