MetaMask/core

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This monorepo is a collection of packages used across multiple MetaMask clients

Stars: 413
Forks: 308
Open beginner issues: 0
Indexed issues: 325
Avg merge: 1d 4h
Merged PRs (30d): 253

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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9 beginner-friendly issues indexed

[utils] Replace the `uuid` dependency with `crypto.randomUUID()` Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

MetaMask/core#10210 · 1 reaction · Opened Sep 11, 2026
[utils] `toWei` accepts fractional wei and returns wrong values Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

MetaMask/core#10209 · Opened Sep 11, 2026
eth-json-rpc-middleware: `TransactionParamsStruct` rejects numeric `chainId`, breaking dapp transactions Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

MetaMask/core#9964 · 1 comment · Opened Aug 25, 2026
[eth-block-tracker]: `json-rpc-engine` should be a production dependency Open

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

MetaMask/core#6864 · 1 comment · Opened Oct 16, 2025
@metamask/foundryup "Invalid version" should not check version starts with 'v' Open

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

MetaMask/core#6245 · Opened Aug 6, 2025
Add missing controller guidelines Open

category-documentation github-migration-triaged team-wallet-framework wf-documentation

Difficulty 2/5 1-3 hours Newbie friendliness 67/100

MetaMask/core#5335 · 2 comments · Opened Feb 14, 2025
[utils] Widen `isSafeDynamicKey` parameter type from `string` to `PropertyKey` Open

team-wallet-framework wf-other

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

MetaMask/core#10206 · 1 comment · Opened Aug 21, 2024
Fix `messenger` type naming in BaseControllerV2 Open

team-assets team-wallet-framework wf-controller-tech-debt

Difficulty 1/5 Under an hour Newbie friendliness 68/100

MetaMask/core#4491 · Opened Jul 1, 2024
`message-manager`: Replace use of `any` with proper types (non-test files only) Open

team-wallet-framework wf-type-fixes

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

MetaMask/core#3723 · Opened Jan 4, 2024

MetaMask/core

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