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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325 open issues indexed

Dependency Dashboard Open

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

MetaMask/core#10300 · Opened Sep 18, 2026
[utils] Drop the `web3` devDependency and replace the differential unit conversion test Open

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

MetaMask/core#10212 · Opened Sep 11, 2026
[utils] Ban enums, and replace them with alternatives Open

Difficulty 4/5 3-5 days Newbie friendliness 65/100

MetaMask/core#10211 · Opened Sep 11, 2026
[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
fix: RpcBalanceFetcher reports a failed native balance read as success:true, value:0 (zeroes real balances) Open

Difficulty 3/5 1-2 days Newbie friendliness 75/100

MetaMask/core#10043 · Opened Sep 1, 2026
Cannot sign a UserOperation for gasless approve + swap with MetaMask Stateless7702 Open

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

MetaMask/core#9970 · Opened Aug 26, 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
base-data-service: fetchInfiniteQuery duplicates a page when a stale cached page is requested again Open

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

MetaMask/core#9900 · Opened Aug 17, 2026
Tested with Firefox 152.0.5 and 154.0a1, both had the issue with jQuery. Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

MetaMask/core#9805 · Opened Aug 7, 2026
addNft never restores isCurrentlyOwned, making re-acquired NFTs permanently invisible Open

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

MetaMask/core#9787 · 1 comment · 7 reactions · Opened Aug 5, 2026
Remove legacy global/selected-chain path from GasFeeController Open

team-confirmations

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

MetaMask/core#9585 · Opened Jul 21, 2026
False-Positive/Removal Request. Open

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

MetaMask/core#9479 · Opened Jul 12, 2026
Derive transaction status-change events from state in `#updateTransactionInternal` Open

team-confirmations

MetaMask/core#9412 · 1 assignee · Opened Jul 7, 2026
False positive on my website Open

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

MetaMask/core#9410 · Opened Jul 7, 2026
Backport workflow-hardening fix (unpinned-uses) to 5 release branches Open

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

MetaMask/core#9276 · Opened Jun 26, 2026
Support smart-contract / multisig accounts (e.g. Safe) via keyring Snaps — relax the internal-account guards Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

MetaMask/core#9179 · Opened Jun 18, 2026
wallet: Make `fetch` injectable in `NetworkController` initialization Open

team-ocap-kernel

MetaMask/core#8793 · 1 assignee · Opened May 13, 2026
wallet: Document the state-injection contract in README Open

team-ocap-kernel

MetaMask/core#8792 · 1 assignee · Opened May 13, 2026
wallet: Add injectable `logger` to `WalletOptions` for initialization diagnostics Open

team-ocap-kernel

MetaMask/core#8791 · 1 assignee · Opened May 13, 2026
wallet: Make and record an init-messenger pattern decision Open

team-ocap-kernel

MetaMask/core#8790 · 1 assignee · Opened May 13, 2026
wallet-cli: Integrate ocap kernel Open

team-ocap-kernel

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

MetaMask/core#8683 · Opened May 4, 2026
[P2] `QueryClient` distributed-tracing observability in `BaseDataService` Open

for-migration mig-epic-42-child

Difficulty 4/5 3-5 days Newbie friendliness 50/100

MetaMask/core#8552 · Opened Apr 23, 2026
Expose replacement implementations of `QueryClient` APIs in UI Open

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

MetaMask/core#8531 · Opened Apr 20, 2026
Block `QueryClient` API surface in UI Open

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

MetaMask/core#8530 · Opened Apr 20, 2026
Transaction type 0x03 is not implemented (EIP-4844, EIP-7594) Open

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

MetaMask/core#8331 · Opened Mar 29, 2026
Upgrade to TypeScript 6.0 Open

team-core-platform wf-typescript-upgrades

Difficulty 4/5 3-5 days Newbie friendliness 38/100

MetaMask/core#8210 · 2 comments · Opened Mar 16, 2026
[RemoteFeatureFlagController] Unclear behaviour on threshold ordering. Open

team-extension-platform team-mobile-platform

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

MetaMask/core#8122 · 4 comments · Opened Mar 5, 2026
False Positive Report: turkchain1919.com Open

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

MetaMask/core#8073 · Opened Feb 28, 2026
It's not clear in the contributor docs that dependents should be released alongside major-bumped packages Open

Difficulty 1/5 1-3 hours Newbie friendliness 48/100

MetaMask/core#8066 · Opened Feb 27, 2026
fix: validateDelegation should allow redelegation signing (non-root authority) Open

Difficulty 2/5 1-3 hours Newbie friendliness 56/100

MetaMask/core#7917 · Opened Feb 12, 2026
Custom tokens show 0 balance after import Open

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

MetaMask/core#7888 · 6 comments · Opened Feb 10, 2026
transaction-controller: reject transactions with both gasPrice and EIP-1559 fee fields instead of gracefully preferring maxFeePerGas Open

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

MetaMask/core#7877 · Opened Feb 9, 2026
[base-controller] Make `metadata` a static property Open

team-core-platform

Difficulty 4/5 3-5 days Newbie friendliness 42/100

MetaMask/core#7633 · Opened Jan 14, 2026
[base-controller] Make `name` a static property Open

team-core-platform

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

MetaMask/core#7632 · Opened Jan 14, 2026
Re-enable `jsdoc/check-tag-names` Open

team-core-platform

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

MetaMask/core#7629 · Opened Jan 14, 2026
Re-enable `jsdoc/require-jsdoc` Open

team-core-platform

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

MetaMask/core#7628 · Opened Jan 14, 2026
Proxy Key Implementation Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

MetaMask/core#7549 · Opened Dec 26, 2025
Fix suppressed lint errors in `user-operation-controller` Open

No-Epic team-confirmations

Difficulty 3/5 1-2 days Newbie friendliness 30/100

MetaMask/core#7399 · Opened Dec 8, 2025
Fix suppressed lint errors in `token-search-discovery-controller` Open

team-assets

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7396 · Opened Dec 8, 2025
Fix suppressed lint errors in `signature-controller` Open

No-Epic team-confirmations

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7393 · Opened Dec 8, 2025
Fix suppressed lint errors in `selected-network-controller` Open

team-wallet-integrations

Difficulty 3/5 1-2 days Newbie friendliness 30/100

MetaMask/core#7391 · Opened Dec 8, 2025
Fix suppressed lint errors in `profile-sync-controller` Open

team-accounts

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7386 · Opened Dec 8, 2025
Fix suppressed lint errors in `phishing-controller` Open

team-product-safety

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7382 · Opened Dec 8, 2025
Fix suppressed lint errors in `network-enablement-controller` Open

team-assets

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7378 · Opened Dec 8, 2025
Fix suppressed lint errors in `name-controller` Open

No-Epic team-confirmations

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7376 · Opened Dec 8, 2025
Fix suppressed lint errors in `multichain-transactions-controller` Open

team-accounts

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7375 · Opened Dec 8, 2025
Fix suppressed lint errors in `multichain-api-middleware` Open

team-wallet-integrations

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7373 · Opened Dec 8, 2025
Fix suppressed lint errors in `multichain-account-service` Open

team-accounts

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7372 · Opened Dec 8, 2025
Fix suppressed lint errors in `message-manager` Open

No-Epic team-confirmations

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MetaMask/core#7370 · Opened Dec 8, 2025

MetaMask/core

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