> For the complete documentation index, see [llms.txt](https://onegate.gitbook.io/onegate/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://onegate.gitbook.io/onegate/nep-21-dapi-for-n3.md).

# NEP-21 dAPI for N3

NEP-21 proposes a common browser API for N3 dApps and external wallet providers. It lets a dApp obtain a wallet provider, inspect wallet metadata, read accounts, request signatures, invoke contracts, relay transactions, and query selected chain data.