curl --request GET \
  --url https://api.kraken.com/v0/insto/custody/tasks/activities/{activity_id} \
  --header 'api-key: <api-key>' \
  --header 'api-nonce: <api-key>' \
  --header 'api-sign: <api-key>'

import requests

url = "https://api.kraken.com/v0/insto/custody/tasks/activities/{activity_id}"

headers = {
    "api-key": "<api-key>",
    "api-sign": "<api-key>",
    "api-nonce": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {'api-key': '<api-key>', 'api-sign': '<api-key>', 'api-nonce': '<api-key>'}
};

fetch('https://api.kraken.com/v0/insto/custody/tasks/activities/{activity_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.kraken.com/v0/insto/custody/tasks/activities/{activity_id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("api-key", "<api-key>")
	req.Header.Add("api-sign", "<api-key>")
	req.Header.Add("api-nonce", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "id": "AABCDEFG23456A",
  "created_at": "2026-01-15T12:34:56Z",
  "type": "review_approved",
  "state": "pending",
  "task": {
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "type": "normalized_task",
    "state": "pending",
    "created_at": "2026-01-15T12:34:56Z",
    "updated_at": "2026-01-15T12:35:56Z",
    "expires_at": "2026-01-16T12:34:56Z"
  },
  "comment": "Transaction approved by finance team.",
  "user": {
    "full_name": "Alex Doe",
    "role": "vault_admin",
    "ip_address": "203.0.113.10",
    "iiban": "ABCD EFGH IJKL MNOP"
  },
  "initiator": {
    "full_name": "Alex Doe",
    "role": "vault_admin",
    "ip_address": "203.0.113.10",
    "iiban": "ABCD EFGH IJKL MNOP"
  },
  "quorum_type": "vault",
  "can_review": true,
  "reviewer_statistics": {
    "approved": 2,
    "denied": 0,
    "undecided": 1,
    "current_count": 3,
    "required_quorum": 2
  },
  "current_user_decision": "undecided",
  "vault_info": {
    "id": "VABCDEF234567A",
    "name": "My Vault",
    "status": "active",
    "subquorum_config": {
      "groups": [
        {
          "id": "1ef8cecf-5d7b-4f83-9640-96d74db0e858",
          "required": 2,
          "members": [
            {
              "iiban": "ABCD EFGH IJKL MNOP",
              "full_name": "Alex Doe",
              "email": "alex.doe@example.com",
              "role": "vault_admin"
            }
          ]
        }
      ]
    }
  },
  "reviewer_statistics_label": "standard",
  "subquorum_snapshot": {
    "groups": [
      {
        "id": "1ef8cecf-5d7b-4f83-9640-96d74db0e858",
        "required": 2,
        "members": [
          {
            "iiban": "ABCD EFGH IJKL MNOP",
            "full_name": "Alex Doe",
            "email": "alex.doe@example.com",
            "role": "vault_admin"
          }
        ]
      }
    ]
  },
  "subquorum_approvals": [
    {
      "group_id": "1ef8cecf-5d7b-4f83-9640-96d74db0e858",
      "approved_iibans": [
        "ABCD EFGH IJKL MNOP"
      ]
    }
  ],
  "instructions": [
    {
      "type": "update_subquorum",
      "version": 123,
      "vault_id": "<string>",
      "groups": [
        {
          "id": "<string>",
          "required": 123,
          "members": [
            {
              "iiban": "<string>",
              "full_name": "<string>",
              "email": "<string>",
              "role": "<string>"
            }
          ]
        }
      ],
      "execution": {
        "state": "<string>",
        "started_at": "2026-01-15T12:34:56Z",
        "completed_at": "2026-01-15T12:35:56Z",
        "error": "<string>"
      }
    }
  ]
}

{
  "type": "tag:kraken.com,2025:BadRequest",
  "status": 400,
  "title": "Bad Request",
  "data": {
    "message": "Request failed validation."
  },
  "detail": "Request failed validation.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}

{
  "type": "tag:kraken.com,2025:PermissionDenied",
  "status": 403,
  "title": "Forbidden",
  "data": {
    "message": "Caller lacks access to the requested resource."
  },
  "detail": "Caller lacks access to the requested resource.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}

{
  "type": "tag:kraken.com,2025:gateway/ReadUpstream",
  "status": 500,
  "title": "Internal Server Error",
  "data": "<unknown>",
  "detail": "Failed to read response from upstream custody service.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}

{
  "type": "tag:kraken.com,2025:gateway/Connect",
  "status": 503,
  "title": "Service Unavailable",
  "data": "<unknown>",
  "detail": "Downstream custody service is temporarily unreachable.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}