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POST
/
uni
/
v1
/
json-rpc
curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=43114 \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "avm.getUTXOs",
    "params": {}
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {}
}

​
Parameters

​
chainId
string
default:"43114"
required
Unique identifier for a blockchain network.
​
id
number
default:1
required
Request identifier used to match responses.
​
jsonrpc
string
default:"2.0"
required
JSON-RPC version.
​
method
string
default:"avm.getUTXOs"
required
JSON-RPC method name.
​
params
object
required
Parameters for avm.getUTXOs:
  • params.addresses: A list of X-Chain addresses to fetch UTXOs for.
  • params.limit: Optional maximum number of UTXOs to return. Defaults to 1024 if omitted or exceeded.
  • params.startIndex: Pagination index from the previous response’s endIndex.
  • params.sourceChain: Optional source chain ID (e.g., “P” or “C”). Used when fetching atomic UTXOs.
  • params.encoding: Encoding format for the returned UTXOs. Must be “hex” if specified.

​
Returns

​
result
object
The JSON-RPC result.
curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=43114 \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "avm.getUTXOs",
    "params": {}
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {}
}