High-level API

This guide explains how to use the typed RPC client to talk to a Phantasma node. It covers adapter setup, error handling, data types, and groups endpoints by domain with examples you can copy‑paste.

For raw JSON building/parsing, see the separate Low‑Level JSON API document.

Include order & setup

Choose one backend:

RapidJSON + libcurl (most common)

#include "Adapters/PhantasmaAPI_rapidjson.h"
#include "Adapters/PhantasmaAPI_curl.h"
#include "PhantasmaAPI.h"
using namespace phantasma;
using namespace phantasma::rpc;
HttpClient http("https://node-url");
PhantasmaAPI api(http);

CppRestSDK (all‑in‑one)

#include "Adapters/PhantasmaAPI_cpprest.h"
#include "PhantasmaAPI.h"
using namespace phantasma; using namespace phantasma::rpc;
HttpClient http("https://node-url");
PhantasmaAPI api(http);

Errors

Most methods accept an optional PhantasmaError* and return a default/empty result on error. Check err.code and err.message when provided.

PhantasmaError err{};
Account acc = api.GetAccount("P2K...", &err);
if (err.code != 0) { /* handle err.message */ }

Common patterns

Pagination (e.g., GetAddressTransactions)

UInt32 page = 0, pageSize = 50;
AccountTransactions txs = api.GetAddressTransactions("P2K...", page, pageSize);

Send a signed transaction

String rawTx = Base16::Encode(tx.ToByteArray(true));
PhantasmaError err{};
String hash = api.SendRawTransaction(rawTx.c_str(), &err);

Dry‑run a script against state (no commit)

Script res = api.InvokeRawScript("main", Base16::Encode(scriptBytes).c_str());

Accounts

GetAccount

Returns the account name and balance of given address.

Returns: Account

Parameters

• account type: const Char*

• nullptr type: PhantasmaError* out_error =

Example

PhantasmaError err{};
Account acc = api.GetAccount("P2K...", &err);

LookUpName

Returns the address that owns a given name.

Returns: String

Parameters

• name type: const Char*

• nullptr type: PhantasmaError* out_error =

GetAddressTransactions

Returns last X transactions of given address. (paginated call)

Returns: AccountTransactions

Parameters

• account type: const Char*

• page type: UInt32

• pageSize type: UInt32

• nullptr type: PhantasmaError* out_error =

Example

AccountTransactions txs = api.GetAddressTransactions("P2K...", /*page*/0, /*pageSize*/50);

GetAddressTransactionCount

Get number of transactions in a specific address and chain

Returns: Int32

Parameters

• account type: const Char*

• chainInput type: const Char*

• nullptr type: PhantasmaError* out_error =

GetEvents

Reads pending messages from the relay network.

Returns: PHANTASMA_VECTOR<Event>

Parameters

• account type: const Char*

• nullptr type: PhantasmaError* out_error =

Blocks

GetBlockHeight

Returns the height of a chain.

Returns: Int32

Parameters

• chainInput type: const Char*

• nullptr type: PhantasmaError* out_error =

GetBlockTransactionCountByHash

Returns the number of transactions of given block hash or error if given hash is invalid or is not found.

Returns: Int32

Parameters

• blockHash type: const Char*

• nullptr type: PhantasmaError* out_error =

GetBlockByHash

Returns information about a block by hash.

Returns: Block

Parameters

• blockHash type: const Char*

• nullptr type: PhantasmaError* out_error =

Example

Block b = api.GetBlockByHash("ABCD...hash");

GetRawBlockByHash

Returns a serialized string, containing information about a block by hash.

Returns: String

Parameters

• blockHash type: const Char*

• nullptr type: PhantasmaError* out_error =

GetBlockByHeight

Returns information about a block by height and chain.

Returns: Block

Parameters

• chainInput type: const Char*

• height type: const Char*

• nullptr type: PhantasmaError* out_error =

GetRawBlockByHeight

Returns a serialized string, in hex format, containing information about a block by height and chain.

Returns: String

Parameters

• chainInput type: const Char*

• height type: const Char*

• nullptr type: PhantasmaError* out_error =

Transactions

GetTransactionByBlockHashAndIndex

Returns the information about a transaction requested by a block hash and transaction index.

Returns: Transaction

Parameters

• blockHash type: const Char*

• index type: Int32

• nullptr type: PhantasmaError* out_error =

SendRawTransaction

Allows to broadcast a signed operation on the network, but it's required to build it manually.

Returns: String

Parameters

• txData type: const Char*

• nullptr type: PhantasmaError* out_error =

Example

String rawTx = Base16::Encode(tx.ToByteArray(true));
String hash = api.SendRawTransaction(rawTx.c_str());

GetTransaction

Returns information about a transaction by hash.

Returns: Transaction

Parameters

• hashText type: const Char*

• nullptr type: PhantasmaError* out_error =

Example

Transaction tx = api.GetTransaction("ABCD...txhash");

CancelTransaction

Removes a pending transaction from the mempool.

Returns: String

Parameters

• hashText type: const Char*

• nullptr type: PhantasmaError* out_error =

Scripting

InvokeRawScript

Allows to invoke script based on network state, without state changes.

Returns: Script

Parameters

• chainInput type: const Char*

• scriptData type: const Char*

• nullptr type: PhantasmaError* out_error =

Example

Script out = api.InvokeRawScript("main", Base16::Encode(scriptBytes).c_str());

Nexus/Chains

GetChains

Returns an array of all chains deployed in Phantasma.

Returns: PHANTASMA_VECTOR<Chain>

Parameters

• nullptr type: PhantasmaError* out_error =

GetNexus

Returns info about the nexus.

Returns: Nexus

Parameters

• extended type: bool

• nullptr type: PhantasmaError* out_error =

GetContract

Returns the ABI interface of specific contract.

Returns: Contract

Parameters

• chainAddressOrName type: const Char*

• contractName type: const Char*

• nullptr type: PhantasmaError* out_error =

Tokens

GetTokens

Returns an array of tokens deployed in Phantasma.

Returns: PHANTASMA_VECTOR<Token>

Parameters

• extended type: bool

• nullptr type: PhantasmaError* out_error =

GetToken

Returns info about a specific token deployed in Phantasma.

Returns: Token

Parameters

• symbol type: const Char*

• extended type: bool

• nullptr type: PhantasmaError* out_error =

GetTokenData

Returns data of a non-fungible token, in hexadecimal format.

Returns: TokenData

Parameters

• symbol type: const Char*

• IDtext type: const Char*

• nullptr type: PhantasmaError* out_error =

GetNFT

Returns data of a non-fungible token, in hexadecimal format.

Returns: TokenData

Parameters

• symbol type: const Char*

• IDtext type: const Char*

• extended type: bool

• nullptr type: PhantasmaError* out_error =

GetTokenBalance

Returns the balance for a specific token and chain, given an address.

Returns: Balance

Parameters

• account type: const Char*

• tokenSymbol type: const Char*

• chainInput type: const Char*

• nullptr type: PhantasmaError* out_error =

Example

Balance bal = api.GetTokenBalance("P2K...", "SOUL", "main");

Auctions

GetAuctionsCount

Returns the number of active auctions.

Returns: Int32

Parameters

• chainAddressOrName type: const Char*

• symbol type: const Char*

• nullptr type: PhantasmaError* out_error =

GetAuctions

Returns the auctions available in the market. (paginated call)

Returns: PHANTASMA_VECTOR<Auction>

Parameters

• chainAddressOrName type: const Char*

• symbol type: const Char*

• page type: UInt32

• pageSize type: UInt32

• nullptr type: PhantasmaError* out_error =

GetAuction

Returns the auction for a specific token.

Returns: Auction

Parameters

• chainAddressOrName type: const Char*

• symbol type: const Char*

• IDtext type: const Char*

• nullptr type: PhantasmaError* out_error =

Archives

GetArchive

Returns info about a specific archive.

Returns: Archive

Parameters

• hashText type: const Char*

• nullptr type: PhantasmaError* out_error =

WriteArchive

Writes the contents of an incomplete archive.

Returns: bool

Parameters

• hashText type: const Char*

• blockIndex type: Int32

• blockContent type: const Char*

• nullptr type: PhantasmaError* out_error =

ReadArchive

Reads given archive block.

Returns: String

Parameters

• hashText type: const Char*

• blockIndex type: Int32

• nullptr type: PhantasmaError* out_error =

Relay/Networking

GetPeers

Returns list of known peers.

Returns: PHANTASMA_VECTOR<Peer>

Parameters

• nullptr type: PhantasmaError* out_error =

RelaySend

Writes a message to the relay network.

Returns: bool

Parameters

• receiptHex type: const Char*

• nullptr type: PhantasmaError* out_error =

RelayReceive

Receives messages from the relay network.

Returns: PHANTASMA_VECTOR<Receipt>

Parameters

• account type: const Char*

• nullptr type: PhantasmaError* out_error =

Interop/Validators/Swaps

GetPlatforms

Returns an array of available interop platforms.

Returns: PHANTASMA_VECTOR<Platform>

Parameters

• nullptr type: PhantasmaError* out_error =

GetValidators

Returns an array of available validators.

Returns: PHANTASMA_VECTOR<Validator>

Parameters

• nullptr type: PhantasmaError* out_error =

SettleSwap

Tries to settle a pending swap for a specific hash.

Returns: String

Parameters

• sourcePlatform type: const Char*

• destPlatform type: const Char*

• hashText type: const Char*

• nullptr type: PhantasmaError* out_error =

GetSwapsForAddress

Returns platform swaps for a specific address.

Returns: PHANTASMA_VECTOR<Swap>

Parameters

• account type: const Char*

• nullptr type: PhantasmaError* out_error =

Organizations/Governance/Leaderboards

GetOrganization

Returns info about an organization.

Returns: Organization

Parameters

• ID type: const Char*

• nullptr type: PhantasmaError* out_error =

GetLeaderboard

Returns content of a Phantasma leaderboard.

Returns: Leaderboard

Parameters

• name type: const Char*

• nullptr type: PhantasmaError* out_error =