Compatibility Test Suite

Overview and link to external bundler conformance test results.

This Bundler Compatibility Test Suite results page serves as a reference for ongoing compatibility testing across bundlers in the ERC-4337 ecosystem.

An external test suite has been developed to verify that bundlers:

  • Correctly implement the EntryPoint interface

  • Respect simulation and validation rules

  • Safely handle edge cases and reverts

🔍 What’s Being Tested?

  • EntryPoint version support (v0.6, v0.7, v0.8)

  • Proper simulateValidation() implementation

  • Bundle construction and submission behavior

  • Error reporting and handling

The tests simulate a wide variety of UserOperations, from valid edge cases to intentionally malformed payloads.

🧪 Test Results

Test results are tracked live at:

👉 https://bundlers.erc4337.io/

This includes:

  • A matrix of passing/failing tests for each bundler

  • Notes on client-specific quirks or deviations

  • Historical conformance data

🛠️ How to Contribute

Published your own open source bundler? To add your bundler to the list, please submit a PR.

Feedback and patches are encouraged to expand the coverage and ensure consistent behavior across the ecosystem.

✅ Summary

This test suite helps ecosystem participants confidently choose, integrate, or build bundlers. Check the linked dashboard for up-to-date compliance information.

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