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

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Performance

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

1 July - 30 September 2026

DateAISP Uptime %AISP Response (ms)AISP Error Rate %MAAD Uptime %MAAD Response (ms)MAAD Error Rate %Mobile Uptime %Mobile Response (ms)API Error Rate %
01/07/2026100.00%1245100.00%100.00%2770.07%100.00%2200.20%
02/07/2026100.00%4536.25%100.00%2900.07%100.00%2200.23%
03/07/2026100.00%458100.00%100.00%2480.03%100.00%2080.18%
04/07/2026100.00%650100.00%100.00%2120.06%100.00%1710.12%
05/07/2026100.00%43742.86%100.00%2230.03%100.00%1670.12%
06/07/2026100.00%57716.67%100.00%2570.04%100.00%2130.15%
07/07/2026100.00%381100.00%100.00%2510.04%100.00%2110.21%
08/07/2026100.00%1070100.00%100.00%2800.03%100.00%2160.33%
09/07/2026100.00%61242.86%100.00%2320.77%100.00%2070.27%
10/07/2026100.00%421100.00%100.00%2730.76%100.00%2120.29%
11/07/2026100.00%803100.00%100.00%2100.83%100.00%1730.26%
12/07/2026100.00%902100.00%100.00%2100.96%100.00%1640.26%
13/07/2026100.00%55240.00%96.74%48060.86%100.00%2110.37%
14/07/2026100.00%N/A0.00%100.00%2350.76%100.00%2110.44%
15/07/2026100.00%16930.00%100.00%2360.73%100.00%2070.55%
16/07/2026100.00%6990.00%100.00%2360.94%100.00%2100.87%
17/07/2026100.00%8970.00%100.00%2980.94%100.00%2091.53%
18/07/2026100.00%N/A0.00%100.00%2230.98%100.00%1662.20%
19/07/2026100.00%N/A0.00%100.00%2051.00%100.00%1562.26%
20/07/2026100.00%N/A0.00%100.00%2310.93%100.00%2042.62%
21/07/2026100.00%7530.00%100.00%2350.82%100.00%2102.84%
22/07/2026100.00%53233.33%100.00%2300.71%100.00%2102.92%
23/07/2026100.00%5300.00%100.00%2430.74%100.00%2122.91%
24/07/2026100.00%4670.00%100.00%2330.71%100.00%2122.92%
25/07/2026100.00%N/A0.00%100.00%2120.85%100.00%1702.87%
26/07/2026100.00%3164.55%100.00%2051.01%100.00%1602.63%
27/07/2026100.00%N/A0.00%100.00%2430.76%100.00%2152.93%
28/07/2026100.00%N/A0.00%100.00%2410.73%100.00%2152.88%
29/07/2026100.00%N/A0.00%100.00%2360.72%100.00%2132.87%
30/07/2026100.00%11630.00%100.00%2540.64%100.00%2222.85%
31/07/2026100.00%13720.00%100.00%2630.64%100.00%2252.95%
01/08/2026100.00%3260.00%100.00%2250.83%100.00%1802.98%
02/08/2026100.00%N/A0.00%100.00%2230.88%100.00%1682.72%
03/08/2026100.00%9320.00%100.00%3061.07%100.00%2363.11%
04/08/2026100.00%3410.00%100.00%2780.97%100.00%2373.18%
05/08/2026100.00%7050.00%100.00%2780.72%100.00%2413.20%
06/08/2026100.00%N/A0.00%100.00%2650.75%100.00%2333.19%
07/08/2026100.00%8790.00%100.00%2730.67%100.00%2403.24%
08/08/2026100.00%N/A0.00%100.00%2300.79%100.00%1953.19%
09/08/2026100.00%11010.00%100.00%2270.93%100.00%1822.86%
10/08/2026100.00%N/A0.00%100.00%7760.76%100.00%2543.31%
11/08/2026100.00%N/A0.00%100.00%2960.72%100.00%2463.10%
12/08/2026100.00%N/A0.00%100.00%3050.65%100.00%2473.30%
13/08/2026100.00%17850.00%100.00%3020.05%100.00%2313.08%
14/08/2026100.00%6090.00%100.00%2670.03%100.00%2252.88%
15/08/2026100.00%6180.00%100.00%4740.05%100.00%3352.61%
16/08/2026100.00%3700.00%100.00%3500.04%100.00%1931.82%
17/08/2026100.00%4980.00%100.00%2890.05%100.00%2281.37%
18/08/2026100.00%N/A0.00%100.00%2800.05%100.00%2180.77%
19/08/2026100.00%N/A0.00%100.00%2680.03%100.00%2190.61%
20/08/2026100.00%5050.00%100.00%2680.03%100.00%2160.57%
21/08/2026100.00%4960.00%100.00%2510.02%100.00%2120.55%
22/08/2026100.00%N/A0.00%100.00%2160.03%100.00%1660.42%
23/08/2026100.00%3500.00%100.00%2150.04%100.00%1590.36%
24/08/2026100.00%N/A0.00%100.00%2590.03%100.00%2150.49%
25/08/2026100.00%8060.00%100.00%2740.05%100.00%2190.49%
26/08/2026100.00%4040.00%100.00%2530.03%100.00%2170.48%
27/08/2026100.00%N/A0.00%100.00%2690.04%100.00%2210.51%
28/08/2026100.00%N/A0.00%100.00%2730.04%100.00%2230.45%
29/08/2026100.00%2340.00%100.00%2250.04%100.00%1790.36%
30/08/2026100.00%3860.00%100.00%2240.04%100.00%1660.32%
31/08/2026100.00%N/A0.00%100.00%2240.04%100.00%1850.36%
01/09/2026100.00%4660.00%100.00%2910.05%100.00%2290.40%
02/09/2026100.00%N/A0.00%100.00%2730.03%100.00%2210.37%
03/09/2026100.00%N/A0.00%100.00%2850.06%100.00%2320.42%
04/09/2026100.00%N/A0.00%100.00%2680.03%100.00%2220.39%
05/09/2026100.00%4480.00%100.00%2080.02%100.00%3240.29%
06/09/2026100.00%N/A0.00%100.00%2230.03%100.00%1700.28%
07/09/2026100.00%N/A0.00%100.00%2640.04%100.00%2190.36%
08/09/2026100.00%10450.00%100.00%2650.04%100.00%2290.36%
09/09/2026100.00%5050.00%100.00%2600.04%100.00%2210.35%
10/09/2026100.00%N/A0.00%99.38%10800.10%98.78%3560.52%
11/09/2026100.00%N/A0.00%100.00%2650.03%100.00%2180.35%
12/09/2026100.00%N/A0.00%100.00%2140.03%100.00%1740.27%
13/09/2026100.00%N/A0.00%100.00%2130.07%100.00%1670.26%
14/09/2026100.00%3590.00%100.00%2640.06%100.00%2240.36%
15/09/2026100.00%N/A0.00%100.00%2650.05%100.00%2230.34%
16/09/2026100.00%N/A0.00%100.00%2570.04%100.00%2160.35%
17/09/2026100.00%6530.00%100.00%2610.08%100.00%2200.42%
18/09/2026100.00%5430.00%100.00%2700.06%100.00%2180.36%
19/09/2026100.00%570.00%100.00%2670.04%100.00%1840.27%
20/09/2026100.00%690.00%100.00%2310.08%100.00%1740.24%
21/09/2026100.00%N/A0.00%100.00%2780.07%100.00%2330.39%
22/09/2026100.00%2800.00%100.00%2570.07%100.00%2290.34%
23/09/2026100.00%3230.00%100.00%2400.12%100.00%2220.28%
24/09/2026100.00%N/A0.00%100.00%2410.17%100.00%2230.42%
25/09/2026100.00%7110.00%100.00%2510.07%100.00%2250.25%
26/09/2026100.00%5450.00%100.00%1840.02%100.00%1811.21%
27/09/2026100.00%7240.00%100.00%1880.03%100.00%1770.16%
28/09/2026100.00%6040.00%100.00%2650.06%100.00%2270.23%
29/09/2026100.00%4000.00%98.68%2490.06%100.00%2180.23%
30/09/2026100.00%6268.33%99.24%15680.04%100.00%2260.23%

View previous Open Banking API performance data