What's new in the documentation?

The latest major MetaMask documentation updates are listed by the month they were added to the documentation. For a comprehensive list of recent product changes, visit the "Release Notes" section at the bottom of the MetaMask developer page.

March 2025

• Documented Multichain API guide, concept, and reference. (#1621)

February 2025

• Documented Unichain Mainnet support. (#1878)

January 2025

• Documented SDK batching contract read operations and production readiness guide. (#1865)
• Documented eth_simulateV1. (#1798)
• Added new MetaMask SDK documentation section. (#1766)
• Documented Snaps Banner, Container, Footer, Skeleton, and Value UI components. (#1835)

December 2024

• Documented Swellchain support. (#1776)
• Documented Snaps notifications expanded view. (#1774)
• Documented snap_getInterfaceContext. (#1772)

November 2024

• Documented updated error responses when rate-limiting Infura JSON-RPC API calls. (#1749)
• Documented Unichain Sepolia support. (#1725)
• Updated Snaps custom UI documentation for MetaMask Extension version 12.6. (#1715)
• Added tutorial for creating a simple Starknet dapp. (#1656)
• Documented Snaps Card and Section UI components. (#1707) (#1700)

October 2024

• Documented support for non-EVM networks, starting with Starknet. (#1509)
• Documented Scroll support. (#1641)
• Updated Wallet landing page and added Connect to MetaMask section with SDK, third-party libraries, and Wallet API connection options. (#1494)
• Documented snap_getPreferences. (#1681)
• Documented Snaps custom UI dialogs. (#1682)

September 2024

• Documented linea_getTransactionExclusionStatusV1. (#1590)
• Updated credit cost for eth_sendRawTransaction. (#1581)
• Documented WebSocket support for Base, Blast, Celo, Ethereum Holesky, and Mantle. (#1552)
• Documented new Snaps custom UI JSX components for Flask version 12.4, and removed documentation for deprecated function-based library. (#1540)
• Documented Snaps user-defined components. (#1557)
• Updated Android SDK documentation with convenience methods and examples using coroutines. (#1546)
• Documented Infura's credit pricing model. (#1530)
• Added tutorial for authenticating with JWT. (#1528)
• Documented opBNB support. (#1528)

August 2024

• The documentation site underwent a temporary freeze in August.
• Updated Starknet documentation with API methods supported by new partners, Bware and Chainstack. (#1483)

July 2024

• Documented Binance Smart Chain support. (#1458)
• Documented Celo WebSocket support. (#1446)
• Documented ZKsync Era WebSocket support. (#1438)
• Documented support for the ZKsync Era network API service. (#1372)
• Added Services and Developer tools to MetaMask documentation. (#1325)

June 2024

• Documented Snaps custom UI with JSX. (#1348)
• Updated React dapp with global state tutorial with instructions for EIP-6963. (#1330)
• Documented that the Gas API can be called without an API key secret. (#1346)
• Updated Snaps resources and added a new section "Snaps for developers." (#1329)
• Documented how to allow automatic connections to a Snap. (#1322)

May 2024

• Added a beginner tutorial for creating a simple dapp using vanilla JavaScript. (#1276)
• Discontinued support for eth_sign. (#1319)
• Updated React dapp with local state tutorial with instructions for EIP-6963. (#1299)
• Documented Snaps initial connections. (#1318)
• Updated Snaps allowlisting guide with open permissions. (#1310)
• Documented Snaps transaction insights. (#1304)
• Documented Snaps home pages. (#1302)
• Documented Snaps dialogs. (#1302)
• Documented Snaps network access. (#1301)
• Documented provider API methods for removing event listeners. (#1288)

April 2024

• Documented Snaps notifications. (#1292)
• Moved Snaps-specific Wallet API methods from the Wallet JSON-RPC API reference to the Snaps reference. (#1286)
• Documented Snaps onKeyringRequest entry point. (#1258)
• Documented Snaps data storage. (#1278)
• Documented how to get your Snap allowlisted. (#1222)
• Documented Snaps lifecycle hooks. (#1274)
• Documented Snaps cron jobs. (#1271)
• Updated how to connect to MetaMask with vanilla TypeScript and React TypeScript instructions. (#1247)

March 2024

• Documented Snaps polyfills configuration option. (#1238)
• Documented Snaps interactive UI. (#1166)
• Documented Snaps improved image support. (#1236)
• Documented Snaps signature insights. (#1228)
• Documented how to restrict a Snap's RPC API methods. (#1223)
• Documented Snap-defined timeouts. (#1224 and #1227)
• Restructured Wallet documentation to emphasize connecting using EIP-6963. (#1214)
• Documented Snaps custom name resolution. (#924)
• Deprecated snaps-types and snaps-ui packages and updated Snaps tutorials to match latest tooling. (#1206 and #1210)
• Documented new Snaps custom UI components and improved examples. (#1209 and #1225)
• Removed "Flask" label from Snaps home pages and snap_getLocale. (#1204)
• Restructured SDK documentation to de-emphasize it as a recommended method. (#1200 and #1230)
• Deprecated the following provider API elements:
  • chainId property
  • networkVersion property
  • selectedAddress property
  • networkChanged event
  • net_version support in send()
• Added Snaps best practices section. (#1187)
• Updated Snaps CLI reference with Webpack configuration options. (#1178)
• Improved and restructured the Snaps Keyring API reference. (#1170)
• Documented how to connect and sign using the Unity SDK. (#1023)

February 2024

• Documented account abstraction using ERC-4337. (#1167)
• Documented how to use Snaps environment variables. (#1149)
• Documented Snaps static files. (#1138)
• Restructured Snaps documentation for improved readability and accessibility. (#1129)
• Added Snaps architecture diagrams. (#1123)
• Documented Snaps unencrypted state. (#1124)
• Documented snap_getClientStatus. (#1119)
• Restructured and improved Wallet documentation and introduced "Wallet API" terminology. (#1114 and #1125)
• Documented how to detect multiple wallets using EIP-6963. (#1094)
• Documented how to communicate errors in Snaps. (#1117)