Getmempooldescendants

getmempooldescendants operations.

getmempooldescendants

post

Returns all in-mempool descendant transactions for a given transaction ID. Descendants are transactions that depend on the outputs of the specified transaction. Can return either a simple list of transaction IDs or detailed JSON objects.

Authorizations

api-keyAuth

api-keystringRequired

NOWNodes API key passed in the api-key header.

Body

application/json

Request payload containing the documented method parameters and client request identifier.

jsonrpcstringRequired

JSON-RPC protocol version.

Example: 1.0

idstringRequired

Client-provided request identifier echoed in the response.

Example: curltest

methodstring · enumRequired

JSON-RPC method name.

Example: getmempooldescendantsPossible values:

Responses

200

Descendant transactions retrieved successfully

application/json

Object containing getmempooldescendants response details.

errorone of · nullableRequired

JSON-RPC error object or null on success.

or

stringOptional

JSON-RPC error object. Null when the request succeeds.

Example: {"code":-28,"message":"Service temporarily unavailable"}

idone of · nullableRequired

Request id echoed by the server.

stringOptional

Client-provided request identifier echoed in the response.

Example: curltest

or

integerOptional

Client-provided request identifier echoed in the response.

Example: curltest

Other propertiesanyOptional

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

post/

HTTPcURLJavaScriptPython

POST / HTTP/1.1
Host: btc-testnet.nownodes.io
api-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 97

{
  "jsonrpc": "1.0",
  "id": "curltest",
  "method": "getmempooldescendants",
  "params": [
    "txid_example",
    true
  ]
}

{
  "result": {
    "d1d9f8b3a3072f52befe5f74cfe74806e591a025405e75f7ce172dcc2316d904": {
      "vsize": 1,
      "weight": 800,
      "time": 1770000000,
      "height": 956047,
      "descendantcount": 1,
      "descendantsize": 1,
      "ancestorcount": 1,
      "ancestorsize": 1,
      "wtxid": "e1e372f70f639a800e4b77c1b45d26f84daa4d82ef8243ebb6b0a31e2921ad2a",
      "fees": {
        "base": 1,
        "modified": 1,
        "ancestor": 1,
        "descendant": 1
      },
      "depends": [],
      "spentby": [],
      "bip125-replaceable": true,
      "unbroadcast": true
    }
  },
  "error": null,
  "id": 1
}