getmempoolentry

Returns mempool data for given transaction

Argument #1 - txid

Type: string, required

The transaction id (must be in mempool)

Result

{                                       (json object)
  "vsize" : n,                          (numeric) virtual transaction size as defined in BIP 141. This is different from actual serialized size for witness transactions as witness data is discounted.
  "weight" : n,                         (numeric) transaction weight as defined in BIP 141.
  "fee" : n,                            (numeric) transaction fee in BTC (DEPRECATED)
  "modifiedfee" : n,                    (numeric) transaction fee with fee deltas used for mining priority (DEPRECATED)
  "time" : xxx,                         (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT
  "height" : n,                         (numeric) block height when transaction entered pool
  "descendantcount" : n,                (numeric) number of in-mempool descendant transactions (including this one)
  "descendantsize" : n,                 (numeric) virtual transaction size of in-mempool descendants (including this one)
  "descendantfees" : n,                 (numeric) modified fees (see above) of in-mempool descendants (including this one) (DEPRECATED)
  "ancestorcount" : n,                  (numeric) number of in-mempool ancestor transactions (including this one)
  "ancestorsize" : n,                   (numeric) virtual transaction size of in-mempool ancestors (including this one)
  "ancestorfees" : n,                   (numeric) modified fees (see above) of in-mempool ancestors (including this one) (DEPRECATED)
  "wtxid" : "hex",                      (string) hash of serialized transaction, including witness data
  "fees" : {                            (json object)
    "base" : n,                         (numeric) transaction fee in BTC
    "modified" : n,                     (numeric) transaction fee with fee deltas used for mining priority in BTC
    "ancestor" : n,                     (numeric) modified fees (see above) of in-mempool ancestors (including this one) in BTC
    "descendant" : n                    (numeric) modified fees (see above) of in-mempool descendants (including this one) in BTC
  },
  "depends" : [                         (json array) unconfirmed transactions used as inputs for this transaction
    "hex",                              (string) parent transaction id
    ...
  ],
  "spentby" : [                         (json array) unconfirmed transactions spending outputs from this transaction
    "hex",                              (string) child transaction id
    ...
  ],
  "bip125-replaceable" : true|false,    (boolean) Whether this transaction could be replaced due to BIP125 (replace-by-fee)
  "unbroadcast" : true|false            (boolean) Whether this transaction is currently unbroadcast (initial broadcast not yet acknowledged by any peers)
}

Request

Curl

curl --location --request POST 'https://btc.api.watchdata.io/node/jsonrpc?api_key=your_api_key' \
--header 'x-api-key: your_api_key' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "1.0",
    "id": "curltest",
    "method": "getmempoolentry",
    "params": [
        "13879c85df460fbad179d60d899b9be5b404865232c8d8066247f2a7c4b9d268"
    ]
}'

Postman

URL: https://btc.api.watchdata.io/node/jsonrpc?api_key=your_api_key
RequestType: POST
Body: 
{
    "jsonrpc": "1.0",
    "id": "curltest",
    "method": "getmempoolentry",
    "params": [
        "13879c85df460fbad179d60d899b9be5b404865232c8d8066247f2a7c4b9d268"
    ]
}

Response

{
    "fees": {
        "base": 3.074e-05,
        "modified": 3.074e-05,
        "ancestor": 0.0002642,
        "descendant": 0.00014454
    },
    "vsize": 153,
    "weight": 609,
    "fee": 3.074e-05,
    "modifiedfee": 3.074e-05,
    "time": 1652729437,
    "height": 736669,
    "descendantcount": 5,
    "descendantsize": 719,
    "descendantfees": 14454,
    "ancestorcount": 9,
    "ancestorsize": 1298,
    "ancestorfees": 26420,
    "wtxid": "3ec83e75f4cf7bee16eb5f360598099b946e8534492e68c2eeb58386f2a4d8cd",
    "depends": [
        "0dac7e5e2d6aaddf65407a95220e4b6e8af8863fc97725e04cdefa00eaa9f0b2"
    ],
    "spentby": [
        "2c812831d86ca5661917dd6dc52274b21a14678338e5c95f11ca82b2657ea393"
    ],
    "bip125-replaceable": false,
    "unbroadcast": false
}