# What changed in @metamask/browser-playground > 34 changes in @metamask/browser-playground 14 to 39 from its official release notes, upgrade guides and advisories: 7 breaking, 13 new APIs and options. Each one cited. Sources checked 2026-10-20. HTML: https://unstale.sh/npm/@metamask/browser-playground/ To see which of these apply to a repository, run `npx @unstale/cli init` in it. ## @metamask/browser-playground 39 ### New APIs and options - The Legacy EVM card adds a read-only RPC button that requests EIP-5792 capabilities for the active account, scoped to the connected chain when available. (39.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v39.0.0) ## @metamask/browser-playground 37 ### New APIs and options - Adds a panel for observing provider announcements, dispatching eip6963:requestProvider, manually re-announcing the legacy EVM SDK provider, and distinguishing MMConnect-managed providers from native/provider-discovery entries. (37.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v37.0.0) ### Behavior and default changes - The browser playground wagmi connector opts out of automatic EIP-6963 provider announcement to avoid duplicate MMConnect-managed announcements while validating the direct legacy EVM SDK path. (37.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v37.0.0) ### Fixes and other changes - Fixes Connected Network cards not appearing automatically after refresh. (37.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v37.0.0) ## @metamask/browser-playground 36 ### New APIs and options - Adds a collapsible panel with a deeplink for each mobile connection failure branch, letting QA reproduce failures without a misconfigured dapp. (36.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v36.0.0) ## @metamask/browser-playground 34 ### New APIs and options - Adds HyperEVM Mainnet (eip155:999), MegaETH Mainnet (eip155:4326), Monad Mainnet (eip155:143), Sei Mainnet (eip155:1329), and Tempo Mainnet (eip155:4217) to the multichain connect form. (34.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v34.0.0) ### Tooling - Adds a collapsible panel with one button per failure_reason classifier branch for manual analytics testing. (34.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v34.0.0) - Adds a local server that stands in for the analytics endpoint. (34.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v34.0.0) ## @metamask/browser-playground 31 ### Behavior and default changes - The playground now uses any Solana provider that announces itself as `MetaMask` rather than preferring `MetaMask Connect`. (31.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v31.0.0) ### Fixes and other changes - The provider now reads `.signature` from the `connectAndSign` return object instead of treating the return value as a string. (31.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v31.0.0) - The wagmi connector now reads `.signature` and `.result` from the updated `connectAndSign` and `connectWith` return values. (31.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v31.0.0) ## @metamask/browser-playground 30 ### Tooling - Adds a meta tag to simulate host-page CSP constraints during local testing. (30.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v30.0.0) ## @metamask/browser-playground 27 ### Breaking changes - The EVM import path now uses @metamask/connect-evm directly. (27.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v27.0.0) ## @metamask/browser-playground 25 ### New APIs and options - Adds global localhost scopes. (25.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v25.0.0) ## @metamask/browser-playground 24 ### Breaking changes - useAccount is renamed to useConnection with the wagmi v3 migration. (24.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v24.0.0) - Use useConnectors() instead of useConnect().connectors with the wagmi v3 migration. (24.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v24.0.0) ### New APIs and options - localhost is added to wagmi's configured chains. (24.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v24.0.0) - The LegacyEVM card's sendTransaction gains an address field, defaulted to the connected address. (24.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v24.0.0) ## @metamask/browser-playground 22 ### Breaking changes - Calls now use the new options object parameter. (22.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v22.0.0) ## @metamask/browser-playground 21 ### New APIs and options - Adds `integrationType: wagmi` to the Wagmi MetaMask connector. (21.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v21.0.0) ## @metamask/browser-playground 20 ### New APIs and options - Adds a Connect button that calls the legacy EVM connectAndSign method. (20.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v20.0.0) ## @metamask/browser-playground 19 ### New APIs and options - Adds a button for connecting through window.ethereum. (19.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v19.0.0) ## @metamask/browser-playground 17 ### Breaking changes - The explicit ActiveProviderStorage pattern is removed; all providers (cards) are active without user input to connect to a specific ecosystem. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) - Manual registration of connect-solana is removed. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) ### New APIs and options - Cards now include disconnect buttons, allowing users to disconnect from the card. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) ### Fixes and other changes - The Multichain Card and button now properly reflect connecting status on initial instantiation. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) - The EVM Provider now uses the connect event for setAccounts. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) - The EVM Provider now uses the connect event for setChainId. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) - The package is patched to work with the Android native browser. (17.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v17.0.0) ## @metamask/browser-playground 16 ### New APIs and options - Adds Solana wallet standard integration to the browser playground. (16.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v16.0.0) ### Behavior and default changes - Button labels now include connector names, changing “Connect” to “Connect (Multichain)” and “Disconnect” to “Disconnect (Multichain)” or “Disconnect All”. (16.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v16.0.0) ## @metamask/browser-playground 15 ### Breaking changes - Uses hex chain ID format for @metamask/connect-evm API compatibility. (15.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v15.0.0) ### Behavior and default changes - Tracks the active provider via local storage state. (15.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v15.0.0) ## @metamask/browser-playground 14 ### New APIs and options - Initial release of the browser playground package. (14.0.0) — [release notes](https://github.com/MetaMask/connect-monorepo/releases/tag/v14.0.0)