API Reference
Welcome to the Blockline API reference. This interactive documentation is auto-generated from our OpenAPI specification.Base URL
Authentication
All endpoints require API key authentication via theAuthorization header:
Available Endpoints
Explore the endpoints below using the navigation menu. Each endpoint includes:- Request parameters and body schemas
- Response schemas with examples
- Error responses
- Interactive “Try it out” functionality
Analyze Trade Context
Find all transactions that touched your market within ±N slots
Get Transaction Details
Retrieve detailed transaction information with validator metadata
Fetch Wallet Signatures
Get transaction history for any wallet with intelligent caching
Enhance Metadata
Enrich transactions with balance changes and financial details
Backfill Transaction
Backfill transaction data into the analytics database
Rate Limits
Most endpoints are limited to 6 requests per minute. See the Rate Limits guide for details.Need Help?
- Quickstart Guide - Get started in 5 minutes
- Authentication - API key setup
- Code Examples - JavaScript and Python examples
- Error Handling - Handle errors properly