# AI Traffic counts say when they are partial

Canonical: https://devtune.ai/changelog/ai-traffic-count-statuses

Published: 2026-11-11T00:00:00.000Z


AI Traffic and Referrals counts in API v2 and MCP now say how complete they are, the same way the app does. A count from a window we only partly covered is a lower bound, shown in the app as `1,234+`. A zero from a partly covered window is unmeasured, not `0`.

## New fields

Each status is `measured`, `lower_bound` or `unmeasured`.

- `GET /projects/{projectId}/traffic/summary` and `devtune_get_traffic_summary`: `totalEventsStatus`, `botEventsStatus`, `referralEventsStatus`, `uniqueSessionsStatus`, `botSessionsStatus` and `referralSessionsStatus`, beside each window total.
- `GET /projects/{projectId}/traffic/referrals` and `devtune_get_ai_referrals`: `currentStatus` and `previousStatus` on `engines.items[].sessions`, `engines.items[].conversions`, `engines.totals.sessions`, `engines.totals.conversions`, `overview.metrics.humanReferralSessions` and `overview.metrics.humanConversions`.

`comparisonAvailable` stays, and is true only when both statuses are `measured`. Conversion rates stay `null` unless both of their counts are `measured`.

## Values that change

Fully covered windows return the same numbers as before.

- **A zero from a partly covered window is now `null`**, with status `unmeasured`. This applies to the six traffic summary totals when that count's `coverage.coveredDays` is below `coverage.windowDays` or `coverage` is `null`, and to the Referrals engine counts, engine totals and overview counts when their coverage flag for that window is false.
- **Engine totals keep what was counted.** `engines.totals` was `null` whenever any platform's count was missing. It is now the sum of the counts that were recorded, with status `lower_bound`, unless every platform is fully measured. It is `null` only when nothing was counted.

If your code treats `0` as "no traffic", check the status first: only a `measured` zero means none. The [API migration guide](https://docs.devtune.ai/api-reference/migration#ai-traffic-count-statuses) lists what to change.