NomicFoundation/edr

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An Ethereum development runtime implementation that can be reused to build new developer tools.

Stars: 108
Forks: 45
Open beginner issues: 0
Indexed issues: 184
Avg merge: 2d 4h
Merged PRs (30d): 94

Dominant language: TypeScript
License: No license data
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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184 open issues indexed

Loopback fork URLs are sent through HTTP_PROXY/HTTPS_PROXY Open

NomicFoundation/edr#1762 · 1 assignee · Opened Sep 17, 2026
Re-evaluate benchmarking design Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

NomicFoundation/edr#1669 · Opened Aug 26, 2026
Re-design JSON-RPC cache Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

NomicFoundation/edr#1665 · Opened Aug 25, 2026
EIP-712 canonical-type collection re-parses whole build infos Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NomicFoundation/edr#1663 · Opened Aug 24, 2026
Solidity test runner fixed costs aren't amortised (per-call setup, fork creation) Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

NomicFoundation/edr#1661 · Opened Aug 24, 2026
Fuzz campaigns are serial within a test Open

NomicFoundation/edr#1660 · 1 assignee · Opened Aug 24, 2026
Provider records full per-step traces for every transaction, even on success Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NomicFoundation/edr#1657 · Opened Aug 24, 2026
All EVM keccak goes through the portable soft backend - enable asm-keccak Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

NomicFoundation/edr#1656 · Opened Aug 24, 2026
Per-opcode cheatcode inspector callbacks cost ~20-24% of Solidity test runs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NomicFoundation/edr#1655 · Opened Aug 24, 2026
Chore: cleanup new `ProtocolHardfork` EDR owned type Open

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

NomicFoundation/edr#1633 · Opened Aug 19, 2026
Fork mode: look up chain protocol parameters by the remote chain ID, not the configured `chain_id` Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

NomicFoundation/edr#1614 · Opened Aug 11, 2026
Drop Holesky chain configs Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

NomicFoundation/edr#1613 · Opened Aug 11, 2026
Adopt tagged numbers to avoid accidental mixups Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NomicFoundation/edr#1610 · Opened Aug 11, 2026
CI docker mirror follow-ups: wait for mirror workflow, verify mirror tags against upstream digests Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NomicFoundation/edr#1593 · Opened Jul 31, 2026
OP deposit transactions (type 0x7E) are rejected by mempool nonce validation, making canonical block replay impossible Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NomicFoundation/edr#1578 · 1 comment · Opened Jul 26, 2026
Update Hardhat 2 patch to support N-API v3 Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

NomicFoundation/edr#1532 · Opened Jul 3, 2026
Adopt `#[napi(object, object_from_js = false)]` on as many `#[napi(object)]` derive macros as possible Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

NomicFoundation/edr#1531 · Opened Jul 2, 2026
Support `gas_estimation_mode` in recorded scenarios Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

NomicFoundation/edr#1480 · Opened Jun 16, 2026
Improve counterexample shrinking for invariant tests Open

solidity-tests

Difficulty 4/5 3-5 days Newbie friendliness 25/100

NomicFoundation/edr#1469 · Opened Jun 9, 2026
perf: investigate whether `eth_estimateGas` can reuse the `EvmObserver` using `flush_and_report` Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NomicFoundation/edr#1467 · Opened Jun 8, 2026
Use `alloy_trie::TrieAccount` instead of `BasicAccount` Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

NomicFoundation/edr#1460 · Opened Jun 3, 2026
CI improvement: check unused dependencies Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

NomicFoundation/edr#1457 · Opened Jun 2, 2026
Add Solidity test support for broadcast and wallet cheatcodes Open

NomicFoundation/edr#1444 · 1 assignee · Opened May 26, 2026
Improve N-API error messages coming from `TryCast` by adding contextual information Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NomicFoundation/edr#1396 · Opened May 11, 2026
Coverage library: replace memory-safe-assembly special comment with block annotation Open

Difficulty 1/5 1-3 hours Newbie friendliness 76/100

NomicFoundation/edr#1383 · 3 comments · Opened May 4, 2026
Don't duplicate setup traces in `TestResult::call_trace_arenas` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NomicFoundation/edr#1331 · Opened Mar 16, 2026
Implement `eth_getTransactionBySenderAndNonce` Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NomicFoundation/edr#1328 · Opened Mar 12, 2026
Deprecate support for Solidity deployment scripts Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

NomicFoundation/edr#1316 · Opened Mar 2, 2026
[HH2] Remove support for `Response::traces` API Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NomicFoundation/edr#1315 · Opened Mar 2, 2026
Simplify Solidity stack trace code Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

NomicFoundation/edr#1290 · Opened Feb 9, 2026
Re-enable traces for Hardhat 2 Open

NomicFoundation/edr#1288 · 1 assignee · Opened Feb 6, 2026
Improve `BaseFeeActivation` configuration Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NomicFoundation/edr#1274 · Opened Jan 28, 2026
Make EDR JSON-RPC compliant Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

NomicFoundation/edr#1258 · 2 comments · Opened Jan 13, 2026
CI improvement: improve rust dependencies caches Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

NomicFoundation/edr#1254 · Opened Dec 30, 2025
CI improvement: unify json rpc caches Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

NomicFoundation/edr#1252 · 1 comment · Opened Dec 30, 2025
Add support for JS tracer to `debug_trace*` methods Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NomicFoundation/edr#1250 · Opened Dec 29, 2025
Document deviations in EIP implementations Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

NomicFoundation/edr#1246 · Opened Dec 29, 2025
Add discriminator field to `TestResult.kind` Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NomicFoundation/edr#1231 · Opened Dec 16, 2025
Show counterexamples as solidity calls Open

solidity-tests

Difficulty 3/5 1-2 days Newbie friendliness 45/100

NomicFoundation/edr#1227 · Opened Dec 15, 2025
Vyper Support for Solidity test Open

solidity-tests

Difficulty 5/5 Over a week Newbie friendliness 25/100

NomicFoundation/edr#1226 · Opened Dec 15, 2025
Coverage guide fuzzing Open

solidity-tests

Difficulty 5/5 Over a week Newbie friendliness 25/100

NomicFoundation/edr#1225 · Opened Dec 15, 2025
Generic "EVM Error" when hitting max retries during forking in solidity tests Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

NomicFoundation/edr#1220 · Opened Dec 8, 2025
Re-enable fjord test Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

NomicFoundation/edr#1215 · Opened Dec 4, 2025
npx hardhat node doesn't set headers correctly when forking Arbitrum Open

NomicFoundation/edr#1214 · 4 comments · 1 assignee · Opened Dec 4, 2025
Fully support OP Jovian hardfork Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

NomicFoundation/edr#1212 · Opened Dec 3, 2025
Support OP-stack jovian hardfork Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NomicFoundation/edr#1210 · Opened Dec 3, 2025
`vm.signDelegation` cheatcode is missing Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

NomicFoundation/edr#1205 · Opened Nov 22, 2025
Filter out remote tests to a separate GitHub check Open

NomicFoundation/edr#1202 · 1 assignee · Opened Nov 20, 2025
Socket Firewall doesn't run on Windows for `edr-npm-release` Open

NomicFoundation/edr#1199 · 1 comment · 1 assignee · Opened Nov 17, 2025
Socket Firewall doesn't run on musl versions of Linux Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

NomicFoundation/edr#1198 · Opened Nov 17, 2025

NomicFoundation/edr

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