Statistics & Graphs
Statistics overview
The dashboard aggregates EU CAPTCHA activity across the last 30 days for the selected sitekey. The following metrics are displayed:
Action types
Internally, every EU CAPTCHA event is recorded as one of the following action types:
| Code | Meaning |
|---|---|
ACC |
Access accepted — request passed the challenge |
VFC |
Verification challenge — a challenge was generated and presented |
ASC / VSC |
Challenge solved — visitor completed the challenge |
B* (any code starting with B) |
Blocked — request was identified as bot or high-risk |
These raw action codes are aggregated into the summary statistics shown on the dashboard:
| Dashboard metric | Derived from |
|---|---|
| Verified | Count of ACC events |
| Blocked | Count of all B* events |
| Challenges served | Count of VFC events |
| Challenges solved | Count of ASC + VSC events |
| Block rate | blocked / (blocked + verified) × 100 |
| Total verifications | blocked + verified |
Interpreting block rate
A block rate of 5–15% is typical for most web properties and indicates the service is catching automated traffic. Very high block rates (>50%) may indicate:
- A targeted bot attack in progress
- Overly strict settings for your traffic profile
- A misconfigured domain (verify the sitekey is for the correct domain)
A block rate of 0% may indicate the EU CAPTCHA token is not being verified server-side, or that the sitekey has no traffic yet.
Graphs
Challenges served for all your Site Keys
Shows the daily volume of challenges served over the last 14 days. Use this graph to:
- Spot traffic spikes (potential attack windows)
- Verify that traffic is reaching EU CAPTCHA (non-zero values)
- Correlate challenge volume with known events (marketing campaigns, product launches)
Block rate for all your Site Keys
Shows the daily block rate percentage over the last 14 days. Use this graph to:
- Identify days with elevated bot activity
- Track the effect of configuration changes over time
- Detect anomalies that may warrant investigation
Filtering by sitekey
By default, statistics and graphs aggregate data across all your sitekeys combined. Use the sitekey dropdown at the top of the dashboard to filter to a specific site — when a sitekey is selected, the statistics cards and graphs both update to reflect that sitekey only. See Dashboard Overview for details.
Data retention
Statistics are retained for at least 30 days. The API supports querying up to 30 days of aggregate data and up to 14 days of per-day data. See the Statistics API reference for details.