Builder API Integration Test Tool

WHAT IT DOES

Builder API Integration Test Tool provides comprehensive testing for builder API integration, enabling protocol developers, searchers, and infrastructure engineers to verify that builder APIs correctly process payloads and integrate with relay infrastructure. It retrieves on-chain builder API endpoints and relay data via HTTP/RPC, processes builder specification and payload data, and validates API integration. The tool analyzes builder API metadata including endpoint URLs, authentication requirements, and payload formats. It runs a suite of integration tests including API endpoint reachability validation, authentication verification, payload format compliance checking, builder response parsing, error handling validation, and response time performance testing. The output includes an integration status (Connected, Partial, or Failed), response time, detected API version, a detailed test matrix showing each integration test's result, and actionable recommendations for resolving issues—such as invalid endpoint URLs, incorrect authentication credentials, malformed payloads, or poor response time performance. This enables builder API developers, searchers, and infrastructure operators to verify that builder APIs are correctly integrated and ready for production use.

HOW TO USE

Connect your BGWallet to the target EVM chain. Provide the builder API endpoint URL you wish to test. Optionally provide an API key for authenticated endpoints. Provide the payload data as a JSON object containing the request parameters (slot, parentHash, timestamp, transactions, blockNumber, etc.). Optionally supply a GitHub repository URL to pull builder API implementation details and integration specifications for additional context. The tool sends test requests to the builder API endpoint, validates the responses, and runs a comprehensive integration test suite. Review the integration status, response time, API version, test matrix, and recommendations. Use the results to verify that your builder API integration is correctly configured and ready for production use.

BUILDER API INTEGRATION VALIDATION AND PERFORMANCE ANALYSIS ENGINE

The real technical mechanism is the builder API integration validation and performance analysis engine that combines API testing with builder specification semantics. The tool first validates the builder API endpoint by testing connectivity and authentication, ensuring that the endpoint is reachable and that any required authentication credentials are correctly configured. It then constructs test payloads based on the builder specification, validating that the payload format matches the expected schema for the builder API version. The engine sends test requests to the builder API and parses the responses, validating that the response format matches the specification and that error handling is correctly implemented. The performance analysis measures response time and compares it against acceptable thresholds, identifying potential latency issues. The integration test results provide a clear view of which aspects of the integration are working correctly and which need attention. This approach provides developers with a comprehensive, automated way to test builder API integration, catching issues that would otherwise only surface during live operations and ensuring that builder APIs are correctly configured and performant.

WHAT IT CANNOT SEE

This tool cannot generate a complete builder API integration test without access to builder API endpoints or relay data. It is limited by network connectivity and API rate limits, which may affect test results on congested networks. It cannot determine if builder APIs correctly process payloads without executing API requests—the tool provides test results based on actual API requests, but cannot simulate all possible edge cases. The detection relies on the completeness of API documentation and endpoint availability; incomplete or outdated documentation will produce incomplete or inaccurate results. Detection is based on pattern matching and may miss indirect or obfuscated integration issues, such as integration logic hidden in libraries or via delegate calls. The tool cannot assess runtime behavior or performance implications of API integration, such as how integration performance varies under different load conditions. It may produce false positives for data that appears similar to API data but is used for other purposes. The tool does not execute the contract to validate API integration, so it cannot confirm that the API integration would work correctly in all scenarios. It cannot account for network-specific builder API implementation differences or future upgrades—different networks may have different builder API implementations or endpoint configurations. Builder API integration mechanics may vary across networks and change over time as APIs evolve.

PLEASE NOTE

This tool works exclusively with EVM-compatible chains that support builder APIs and relay infrastructure. It requires active internet connectivity to access builder API endpoints. Some builder APIs may require authentication or API keys; ensure credentials are correctly provided. The tool is read-only and does not submit any blocks or modify chain state—it only produces integration assessments. Builder API integration is critical to MEV-Boost and block building infrastructure; always verify integration results against actual builder API behavior on testnet before mainnet deployment. Different builder APIs may have different endpoint formats, authentication requirements, and payload schemas.