Pass attach as a conversion event: stability for bidding
Pass attach is seasonal. Illustrative stability check before using it as a bid event.
Bidding networks on pass_attach during a season launch week will chase a spike that vanishes when the pass calendar goes quiet.
Definitions
In-app events overview allows custom events and urges a small, stable KPI set. Postback configuration shows how mapped events (with or without revenue) become what partners optimise. pass_attach is a custom F2P event — stability is an operator gate, not an MMP preset.
Synthetic stability gate
| Week type | Attach rate | Status |
|---|---|---|
| Off-pass | 4% | illustrative |
| Pass launch | 11% | illustrative |
| Seasonal lift | 2.75× | calculated |
| Weekly CV | 0.55 | teaching input |
| Stable for bidding? | No (CV > 0.25 teaching threshold) | calculated |
Require several off-pass weeks inside your CV threshold before enabling pass_attach as a scaled conversion.
Facts vs limits
| Fact | Limit |
|---|---|
| Custom KPI events and postback mapping are documented | 0.25 CV threshold is editorial teaching, not a vendor rule |
| Seasonality is expected for passes | Not causal proof against using the event in learning caps |
CSV.
