Open Banking

API performance and documentation

Documentation

Currently we only offer open application programming interfaces (APIs) for the cash hub account of our Active Savings service. Find out more by reading our Active Savings FAQs.

HL API Summary Information

If you need help email us and we'll get back to you as soon as possible.

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Performance

We publish statistics every three months about how our Online and Open Banking services are performing.

1 January 2026 - 31 March 2026

DateAISP Uptime %AISP Response (ms)AISP Error Rate %MAAD Uptime %MAAD Response (ms)MAAD Error Rate %Mobile Uptime%Mobile Response (ms)Mobile Error Rate %
01/01/2026100.00%6510%100.00%3050.03%100.00%1890.14%
02/01/2026100.00%5640%100.00%2890.02%100.00%2120.20%
03/01/2026100.00%3506.25%100.00%3110.03%100.00%1940.16%
04/01/2026100.00%7050%100.00%2680.03%100.00%1930.16%
05/01/2026100.00%7260%100.00%3160.02%100.00%2210.22%
06/01/2026100.00%8290%100.00%2960.03%100.00%2170.20%
07/01/2026100.00%11350%100.00%2910.02%100.00%2130.19%
08/01/2026100.00%7370%100.00%2810.02%100.00%2110.20%
09/01/2026100.00%6390%100.00%2820.02%100.00%2130.19%
10/01/2026100.00%4240%100.00%2470.03%100.00%1950.15%
11/01/2026100.00%9670%100.00%2530.02%100.00%1920.16%
12/01/2026100.00%6870%100.00%2850.02%100.00%2150.23%
13/01/2026100.00%5840%100.00%2580.03%100.00%2090.22%
14/01/2026100.00%6170%100.00%2620.02%100.00%2110.24%
15/01/2026100.00%6060%100.00%2690.01%100.00%2180.27%
16/01/2026100.00%2930%100.00%2810.01%100.00%2080.20%
17/01/2026100.00%4110%100.00%2430.02%100.00%1920.15%
18/01/2026100.00%4520%100.00%2430.02%100.00%1890.16%
19/01/2026100.00%8080%100.00%2720.02%100.00%2040.24%
20/01/2026100.00%6510%100.00%2900.02%100.00%2060.25%
21/01/2026100.00%6280%100.00%2720.03%100.00%2060.24%
22/01/2026100.00%6280%100.00%2620.02%100.00%2080.23%
23/01/2026100.00%8850%100.00%2640.03%100.00%2100.25%
24/01/2026100.00%7020%100.00%2540.03%100.00%1900.18%
25/01/2026100.00%9520%100.00%2700.03%100.00%1880.19%
26/01/2026100.00%7490%100.00%3340.02%100.00%2100.30%
27/01/2026100.00%5880%100.00%2610.02%100.00%2090.27%
28/01/2026100.00%6660%100.00%2590.02%100.00%2100.27%
29/01/2026100.00%4680%100.00%2520.02%100.00%2140.32%
30/01/2026100.00%4450%100.00%2630.02%100.00%2140.34%
31/01/2026100.00%5160%100.00%2650.02%100.00%1920.20%
01/02/2026100.00%5600%100.00%2650.02%100.00%1900.19%
02/02/2026100.00%7290%100.00%2970.02%100.00%2160.33%
03/02/2026100.00%8460%100.00%2900.02%100.00%2210.27%
04/02/2026100.00%10920%100.00%2700.01%100.00%2190.22%
05/02/2026100.00%6890%100.00%2390.02%100.00%2150.27%
06/02/2026100.00%5980%100.00%2400.01%100.00%2220.24%
07/02/2026100.00%7130%100.00%2410.03%100.00%2080.16%
08/02/2026100.00%10040%100.00%2370.04%100.00%1950.16%
09/02/2026100.00%6110%100.00%2660.02%100.00%2130.22%
10/02/2026100.00%11200%100.00%2640.02%100.00%2160.19%
11/02/2026100.00%10050%100.00%2680.01%100.00%2160.20%
12/02/2026100.00%5710%100.00%2590.01%100.00%2100.19%
13/02/2026100.00%12040%100.00%2660.01%100.00%2100.19%
14/02/2026100.00%8180%100.00%2520.02%100.00%1930.14%
15/02/2026100.00%9520%100.00%2560.02%100.00%1930.14%
16/02/2026100.00%3430%100.00%2590.02%100.00%2080.19%
17/02/2026100.00%5620%100.00%2480.03%100.00%2130.23%
18/02/2026100.00%8630%100.00%2560.02%100.00%2380.23%
19/02/2026100.00%4110%100.00%2170.01%100.00%2070.20%
20/02/2026100.00%2840%100.00%2290.01%100.00%2120.20%
21/02/2026100.00%4990%100.00%2150.03%100.00%1980.14%
22/02/2026100.00%8580%100.00%2240.02%100.00%1940.15%
23/02/2026100.00%6520%100.00%2310.02%100.00%2130.22%
24/02/2026100.00%5710%100.00%2360.02%100.00%2160.21%
25/02/2026100.00%6420%100.00%2260.02%100.00%2130.20%
26/02/2026100.00%560%100.00%2290.15%100.00%2130.20%
27/02/2026100.00%8620%100.00%2480.06%100.00%2190.24%
28/02/2026100.00%580%100.00%2320.08%100.00%1990.18%
01/03/2026100.00%550%100.00%2300.07%100.00%1920.22%
02/03/2026100.00%500%100.00%2650.05%100.00%2240.28%
03/03/2026100.00%1400%100.00%2560.06%100.00%2150.24%
04/03/2026100.00%5950%99.65%22570.18%99.72%2160.98%
05/03/2026100.00%6240%100.00%2280.10%100.00%2040.20%
06/03/2026100.00%670%100.00%8420.03%100.00%2070.69%
07/03/2026100.00%1480%100.00%2070.05%100.00%1900.17%
08/03/2026100.00%2180%100.00%2200.06%100.00%1880.20%
09/03/2026100.00%3320%100.00%2400.04%100.00%2090.26%
10/03/2026100.00%2580%100.00%2290.05%100.00%2070.22%
11/03/2026100.00%3330%100.00%2230.05%100.00%2020.22%
12/03/2026100.00%740%100.00%2190.08%100.00%1990.27%
13/03/2026100.00%570%100.00%2200.03%100.00%1960.25%
14/03/2026100.00%640%100.00%2060.06%100.00%1790.18%
15/03/2026100.00%5050%100.00%2190.07%100.00%1810.19%
16/03/2026100.00%5670%100.00%2270.04%100.00%1990.27%
17/03/2026100.00%3290%100.00%2150.06%100.00%1950.29%
18/03/2026100.00%3470%100.00%2150.05%100.00%1960.25%
19/03/2026100.00%158312.50%79.24%7511.96%79.24%1914.73%
20/03/2026100.00%2910%56.18%2402.42%55.90%17313.70%
21/03/2026100.00%360%100.00%1950.07%100.00%1710.18%
22/03/2026100.00%400%100.00%2040.07%100.00%1690.19%
23/03/2026100.00%5240%100.00%2290.04%100.00%2060.31%
24/03/2026100.00%5402.27%100.00%2150.05%100.00%1920.25%
25/03/2026100.00%5830%100.00%2180.03%100.00%1960.24%
26/03/2026100.00%1610%100.00%2050.05%100.00%1900.25%
27/03/2026100.00%570%100.00%2210.04%100.00%1930.24%
28/03/2026100.00%2970%100.00%2660.09%100.00%1730.16%
29/03/2026100.00%4020%100.00%2040.08%100.00%1700.17%
30/03/2026100.00%1850%100.00%2240.04%100.00%1980.24%
31/03/2026100.00%1530%100.00%2260.07%100.00%2010.26%