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API on Cardano ADA data

API for accessing Cardano data

We maintain a relational mapping of the Cardano ADA blockchain and provide an API to access it.

access

You can access access the API after you have been logging in to this site. The cookies "ghost-members-ssr" and "ghost-members-ssr.sig" are sufficient to authenticate. Luckily, they are valid for six months.

endpoints

All endpoints are accessible under /api_ada/v1/

see endpoint details

/health

query the server whether it is available:

curl --cookie "ghost-members-ssr=...; ghost-members-ssr.sig=..." \
   -X GET https://www.blockchain-applied.com/api_ada/v1/health

{"status": "healthy"}

list transactions - /sum_address_tx/{address}

we can search for transactions on a specific address.

This has been implemented in the interactive report Cardano transactions by address.

curl --cookie "ghost-members-ssr=...; ghost-members-ssr.sig=..." \
  -X GET "https://www.blockchain-applied.com/api_ada/v1/sum_address_tx/addr1x9k4ptymh2ne87j3j2jclaq2tc5fnvxdcxzxrrg2rupyh4jd74u7rq3tje79qptmcmg35au2s27g3cam7yuhfq5nze5qht5q25"

[
  {
    "blocktime": "2025-07-02 19:13:09",
    "epoch_no": 567,
    "received": 2.6,
    "sent": 0.0
  },
  {
    "blocktime": "2025-07-08 20:10:33",
    "epoch_no": 568,
    "received": 0.0,
    "sent": 2.6
  },
  {
    "blocktime": "2025-07-08 20:17:55",
    "epoch_no": 568,
    "received": 22.6,
    "sent": 0.0
  },
...

lists all transactions that are related to a staking address.

This has been implemented in the interactive report Cardano transactions by staking address.

curl --cookie "ghost-members-ssr=...; ghost-members-ssr.sig=..." \
  -X GET https://www.blockchain-applied.com/api_ada/v1/sum_staking_tx/stake1uyktcfxtggjp8sxpl7alj7t68nf2klt2sk9fsxdf0k9aptsvknqj9

[
  {
    "blocktime": "2025-07-02 19:13:09",
    "epoch_no": 567,
    "received": 2.6,
    "sent": 0.0
  },
  {
    "blocktime": "2025-07-08 20:10:33",
    "epoch_no": 568,
    "received": 0.0,
    "sent": 2.6
  },
  {
    "blocktime": "2025-07-08 20:17:55",
    "epoch_no": 568,
    "received": 22.6,
    "sent": 0.0
  },
  {
    "blocktime": "2025-07-18 20:10:21",
    "epoch_no": 570,
    "received": 0.0,
    "sent": 22.6
  },
...

summarize rewards - /sum_rewards/{stakingaddr}

rewards earned on a staking address are listed.

This has been implemented in the interactive report Cardano rewards by staking address.

curl --cookie "ghost-members-ssr=...; ghost-members-ssr.sig=..." \
  -X GET "https://www.blockchain-applied.com/api_ada/v1/sum_rewards/stake1uyktcfxtggjp8sxpl7alj7t68nf2klt2sk9fsxdf0k9aptsvknqj9"

[
  {
    "blocktime": "2021-09-17 21:46:33",
    "epoch_no": 291,
    "received": 0.055518,
    "withdrawn": 0.0
  },
  {
    "blocktime": "2021-09-22 21:46:03",
    "epoch_no": 292,
    "received": 0.063867,
    "withdrawn": 0.0
  },
...