> For the complete documentation index, see [llms.txt](https://docs.baas.sh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.baas.sh/baas-sdk/blockchain.md).

# Blockchain interactions

Call your registered smart contracts, send transactions, sign messages, convert amounts, and pick the active network, all from the browser.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Smart contracts</strong></td><td>Read data, send transactions, simulate, and estimate gas.</td><td><a href="/pages/RrzRRdfhf2uRbE4FZHXd">/pages/RrzRRdfhf2uRbE4FZHXd</a></td></tr><tr><td><strong>Wallet operations</strong></td><td>Send transactions, sign messages, and read balances.</td><td><a href="/pages/x6JTXmRFoiT83KwkpLI8">/pages/x6JTXmRFoiT83KwkpLI8</a></td></tr><tr><td><strong>Networks</strong></td><td>List your project's supported chains and pick the active one.</td><td><a href="/pages/ZIbPUIhOJjOt1AhqVgja">/pages/ZIbPUIhOJjOt1AhqVgja</a></td></tr><tr><td><strong>Unit conversion</strong></td><td>Convert between human amounts and raw on-chain values.</td><td><a href="/pages/8sAV0dHP32u3XNewlCee">/pages/8sAV0dHP32u3XNewlCee</a></td></tr></tbody></table>


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