> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# PostHog audit profile, Vortex IQ

> What the Vortex IQ PostHog health audit checks: PostHog Tracking, Instrumentation & Product Analytics Health

**[Nerve Centre KPIs](/nerve-centre/kpi-cards/posthog) · [Audit Profile](/nerve-centre/kpi-cards/posthog/audit) · [Sentiment Settings](/nerve-centre/kpi-cards/posthog/sentiment)**

Verifies PostHog project access, event-ingestion health, engagement and retention, funnel conversion, session-replay and feature-flag hygiene, data quality, and cross-channel reconciliation against ecommerce.

## What this audit checks

### Authentication & access

* Personal API Key valid (Bearer auth accepted)
* Project accessible for the configured project\_id
* Instance URL reachable (Cloud us/eu or self-hosted) and API version supports session\_recordings

### Tracking & instrumentation health

* \$pageview event firing
* purchase event firing
* add\_to\_cart event firing
* Total event volume stable vs 7d baseline
* No core event stopped firing in last 24h

### Engagement & retention

* D7 retention above baseline
* Stickiness (DAU/MAU) healthy
* Engagement rate above floor

### Conversion & funnels

* Primary funnel conversion above floor
* No single funnel step drop-off >40%
* Cart abandonment rate within band

### Data quality

* distinct\_id present on tracked events (no anonymous-only ingestion)
* Event taxonomy drift within tolerance (no flood of unexpected event names)
* Session-replay coverage tracking observed sessions

### Cross-channel

* Funnel conversion vs ecommerce platform conversion divergence
* purchase-event count vs ecommerce order count divergence

## Severity thresholds

| Signal                        | Warn | Critical |
| ----------------------------- | ---- | -------- |
| `conversion_rate`             | 2    | -        |
| `engagement_rate`             | 40   | -        |
| `event_volume_drop_pct`       | 25   | 40       |
| `funnel_conversion_drop_pp`   | 5    | 10       |
| `funnel_step_dropoff_pct`     | 40   | 60       |
| `d7_retention_pct`            | 20   | -        |
| `stickiness_pct`              | 20   | -        |
| `session_replay_coverage_pct` | 80   | -        |
| `stale_feature_flags_count`   | 5    | 10       |
| `taxonomy_drift_count`        | 5    | 10       |

## Data sources

* `GET https://app.posthog.com/api/projects/{project_id}/` - Project access + auth probe (Bearer Personal API Key)
* `GET https://app.posthog.com/api/projects/{project_id}/events` - Event ingestion, core event presence, volume baseline
* `GET https://app.posthog.com/api/projects/{project_id}/insights` - Funnel conversion, retention, stickiness, engagement
* `GET https://app.posthog.com/api/projects/{project_id}/persons` - Active / new / returning user counts
* `GET https://app.posthog.com/api/projects/{project_id}/session_recordings` - Session-replay capture and coverage
* `GET https://app.posthog.com/api/projects/{project_id}/feature_flags` - Feature-flag rollout status and stale-flag detection