30 lines
39 KiB
HTML
30 lines
39 KiB
HTML
<!DOCTYPE html>
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<html lang="en-US">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<title>JSON-RPC | polkadot-js/api</title>
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<meta name="description" content="API libraries and interfaces for communicating with Polkadot and Substrate nodes">
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<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></a></div> <!----></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><a href="/api/examples/promise/" class="sidebar-heading clickable"><span>Examples (Promise API)</span> <!----></a> <ul class="sidebar-links sidebar-group-items"><li><a href="/api/examples/promise/01_simple_connect/" class="sidebar-link">Simple connect</a></li><li><a href="/api/examples/promise/02_listen_to_blocks/" class="sidebar-link">Listen to blocks</a></li><li><a href="/api/examples/promise/03_listen_to_balance_change/" class="sidebar-link">Listen to balance change</a></li><li><a href="/api/examples/promise/04_unsubscribe/" class="sidebar-link">Unsubscribe from listening</a></li><li><a href="/api/examples/promise/05_read_storage/" class="sidebar-link">Read chain state</a></li><li><a href="/api/examples/promise/06_make_transfer/" class="sidebar-link">Make a transfer</a></li><li><a href="/api/examples/promise/08_system_events/" class="sidebar-link">Display system events</a></li><li><a href="/api/examples/promise/09_transfer_events/" class="sidebar-link">Transaction with events</a></li><li><a href="/api/examples/promise/10_upgrade_chain/" class="sidebar-link">Upgrade via sudo</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Substrate interfaces</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/api/METHODS_RPC.html" class="active sidebar-link">Substrate RPC</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/METHODS_RPC.html#json-rpc" class="sidebar-link">JSON-RPC</a></li></ul></li><li><a href="/api/METHODS_STORAGE.html" class="sidebar-link">State storage (defaults)</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/METHODS_STORAGE.html#storage" class="sidebar-link">Storage</a></li></ul></li><li><a href="/api/METHODS_EXTRINSICS.html" class="sidebar-link">Extrinsics (defaults)</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/METHODS_EXTRINSICS.html#extrinsics" class="sidebar-link">Extrinsics</a></li></ul></li><li><a href="/api/METHODS_EVENTS.html" class="sidebar-link">System events (defaults)</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/METHODS_EVENTS.html#events" class="sidebar-link">Events</a></li></ul></li></ul></section></li><li><a href="/api/api/" class="sidebar-link">@polkadot/api</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/api/#api-selection" class="sidebar-link">API Selection</a></li><li class="sidebar-sub-header"><a href="/api/api/#dynamic-by-default" class="sidebar-link">Dynamic by default</a></li><li class="sidebar-sub-header"><a href="/api/api/#installation-import" class="sidebar-link">Installation & import</a></li><li class="sidebar-sub-header"><a href="/api/api/#registering-custom-types" class="sidebar-link">Registering custom types</a></li><li class="sidebar-sub-header"><a href="/api/api/#users" class="sidebar-link">Users</a></li><li class="sidebar-sub-header"><a href="/api/api/#classes" class="sidebar-link">Classes</a></li></ul></li><li><a href="/api/types/" class="sidebar-link">@polkadot/types</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/types/#primitive-types" class="sidebar-link">Primitive types</a></li><li class="sidebar-sub-header"><a href="/api/types/#substrate-types" class="sidebar-link">Substrate types</a></li><li class="sidebar-sub-header"><a href="/api/types/#derived-types" class="sidebar-link">Derived types</a></li><li class="sidebar-sub-header"><a href="/api/types/#codec-types" class="sidebar-link">Codec types</a></li></ul></li><li><a href="/api/CONTRIBUTING.html" class="sidebar-link">Contributing</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/api/CONTRIBUTING.html#what" class="sidebar-link">What?</a></li><li class="sidebar-sub-header"><a href="/api/CONTRIBUTING.html#rules" class="sidebar-link">Rules</a></li><li class="sidebar-sub-header"><a href="/api/CONTRIBUTING.html#releases" class="sidebar-link">Releases</a></li><li class="sidebar-sub-header"><a href="/api/CONTRIBUTING.html#changes-to-this-arrangement" class="sidebar-link">Changes to this arrangement</a></li><li class="sidebar-sub-header"><a href="/api/CONTRIBUTING.html#heritage" class="sidebar-link">Heritage</a></li></ul></li></ul> </aside> <main class="page"> <div class="content default"><h2 id="json-rpc"><a href="#json-rpc" aria-hidden="true" class="header-anchor">#</a> JSON-RPC</h2> <p><em>The following sections contain RPC methods that are Remote Calls available by default and allow you to interact with the actual node, query, and submit. The RPCs are provided by Substrate itself.</em></p> <ul><li><p><strong><a href="#author">author</a></strong></p></li> <li><p><strong><a href="#chain">chain</a></strong></p></li> <li><p><strong><a href="#state">state</a></strong></p></li> <li><p><strong><a href="#system">system</a></strong></p></li></ul> <hr> <h3 id="author"><a href="#author" aria-hidden="true" class="header-anchor">#</a> author</h3> <p><em>Authoring of network items</em></p> <p>▸ <strong>pendingExtrinsics</strong>(): <code>PendingExtrinsics</code></p> <ul><li><strong>summary</strong>: Returns all pending extrinsics, potentially grouped by sender</li></ul> <p>▸ <strong>submitAndWatchExtrinsic</strong>(extrinsic: <code>Extrinsic</code>): <code>ExtrinsicStatus</code></p> <ul><li><strong>summary</strong>: Subscribe and watch an extrinsic until unsubscribed</li></ul> <p>▸ <strong>submitExtrinsic</strong>(extrinsic: <code>Extrinsic</code>): <code>Hash</code></p> <ul><li><strong>summary</strong>: Submit a fully formatted extrinsic for block inclusion</li></ul> <hr> <h3 id="chain"><a href="#chain" aria-hidden="true" class="header-anchor">#</a> chain</h3> <p><em>Retrieval of chain data</em></p> <p>▸ <strong>getBlock</strong>(hash?: <code>Hash</code>): <code>SignedBlock</code></p> <ul><li><strong>summary</strong>: Get header and body of a relay chain block</li></ul> <p>▸ <strong>getBlockHash</strong>(blockNumber?: <code>BlockNumber</code>): <code>Hash</code></p> <ul><li><strong>summary</strong>: Get the block hash for a specific block</li></ul> <p>▸ <strong>getFinalisedHead</strong>(): <code>Hash</code></p> <ul><li><strong>summary</strong>: Get hash of the last finalised block in the canon chain</li></ul> <p>▸ <strong>getHeader</strong>(hash?: <code>Hash</code>): <code>Header</code></p> <ul><li><strong>summary</strong>: Retrieves the header for a specific block</li></ul> <p>▸ <strong>getRuntimeVersion</strong>(hash?: <code>Hash</code>): <code>RuntimeVersion</code></p> <ul><li><strong>summary</strong>: Get the runtime version (alias of state_getRuntimeVersion)</li></ul> <p>▸ <strong>subscribeFinalisedHeads</strong>(): <code>Header</code></p> <ul><li><strong>summary</strong>: Retrieves the best finalised header via subscription</li></ul> <p>▸ <strong>subscribeNewHead</strong>(): <code>Header</code></p> <ul><li><strong>summary</strong>: Retrieves the best header via subscription</li></ul> <p>▸ <strong>subscribeRuntimeVersion</strong>(): <code>RuntimeVersion</code></p> <ul><li><strong>summary</strong>: Retrieves the runtime version via subscription</li></ul> <hr> <h3 id="state"><a href="#state" aria-hidden="true" class="header-anchor">#</a> state</h3> <p><em>Query of state</em></p> <p>▸ <strong>call</strong>(method: <code>Text</code>, data: <code>Bytes</code>, block?: <code>Hash</code>): <code>Bytes</code></p> <ul><li><strong>summary</strong>: Perform a call to a builtin on the chain</li></ul> <p>▸ <strong>getMetadata</strong>(block?: <code>Hash</code>): <code>Metadata</code></p> <ul><li><strong>summary</strong>: Returns the runtime metadata</li></ul> <p>▸ <strong>getRuntimeVersion</strong>(hash?: <code>Hash</code>): <code>RuntimeVersion</code></p> <ul><li><strong>summary</strong>: Get the runtime version</li></ul> <p>▸ <strong>getStorage</strong>(key: <code>StorageKey</code>, block?: <code>Hash</code>): <code>StorageData</code></p> <ul><li><strong>summary</strong>: Retrieves the storage for a key</li></ul> <p>▸ <strong>getStorageHash</strong>(key: <code>StorageKey</code>, block?: <code>Hash</code>): <code>Hash</code></p> <ul><li><strong>summary</strong>: Retrieves the storage hash</li></ul> <p>▸ <strong>getStorageSize</strong>(key: <code>StorageKey</code>, block?: <code>Hash</code>): <code>u64</code></p> <ul><li><strong>summary</strong>: Retrieves the storage size</li></ul> <p>▸ <strong>queryStorage</strong>(keys: <code>Vec<StorageKey></code>, startBlock: <code>Hash</code>, block?: <code>Hash</code>): <code>Vec<StorageChangeSet></code></p> <ul><li><strong>summary</strong>: Query historical storage entries (by key) starting from a start block</li></ul> <p>▸ <strong>subscribeStorage</strong>(keys: <code>Vec<StorageKey></code>): <code>StorageChangeSet</code></p> <ul><li><strong>summary</strong>: Subscribes to storage changes for the provided keys</li></ul> <hr> <h3 id="system"><a href="#system" aria-hidden="true" class="header-anchor">#</a> system</h3> <p><em>Methods to retrieve system info</em></p> <p>▸ <strong>chain</strong>(): <code>Text</code></p> <ul><li><strong>summary</strong>: Retrieves the chain</li></ul> <p>▸ <strong>health</strong>(): <code>Health</code></p> <ul><li><strong>summary</strong>: Return health status of the node</li></ul> <p>▸ <strong>name</strong>(): <code>Text</code></p> <ul><li><strong>summary</strong>: Retrieves the node name</li></ul> <p>▸ <strong>peers</strong>(): <code>Vec<PeerInfo></code></p> <ul><li><strong>summary</strong>: Returns the currently connected peers</li></ul> <p>▸ <strong>properties</strong>(): <code>ChainProperties</code></p> <ul><li><strong>summary</strong>: Get a custom set of properties as a JSON object, defined in the chain spec</li></ul> <p>▸ <strong>version</strong>(): <code>Text</code></p> <ul><li><strong>summary</strong>: Retrieves the version of the node</li></ul></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated: </span> <span class="time">2/26/2019, 3:22:01 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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