Categories¶
Open Consumables works one measurement programme at a time. The pilot is electric toothbrush heads. The public reference layer (the device knowledge graph: per-device pages with provenance-tagged compatibility) extends to other categories ahead of measurement, so an agent searching "replacement for my Xiaomi 3H" lands somewhere useful.
Reference coverage¶
| Category | Working name | Stage |
|---|---|---|
| Electric toothbrush heads | OpenBrush | Phase 2: physical measurement |
| Air purifier filters | OpenAir | Reference layer only (no measurement programme) |
| Electric scooter consumables | OpenScoot | Reference layer only (no measurement programme) |
| Electric shaver heads | OpenShave | Reference layer only (no measurement programme) |
| Water purifier cartridges | OpenWater | Reference layer only (no measurement programme) |
| Robot vacuum consumables | OpenVac | Reference layer only (no measurement programme) |
| Humidifier filters / wicks | OpenMist | Reference layer only (no measurement programme) |
Measurement status¶
Only the toothbrush pilot has an active measurement programme. The other six categories publish sourced device and replacement-part references. Their measurement programmes activate only after the pilot has produced a published measured baseline and the category has been explicitly chosen.
The September 2026 reference review covers all seven categories. It includes products newly added to this archive as well as newer manufacturer catalog entries. Review dates do not imply launch dates, stock availability, or measured interchangeability. Source links or unresolved legacy source notes appear beside compatibility claims.
Why this list and not a longer one¶
Each category passes three gates:
- Category-fit, spec is complete, buyer has opted out of choice, rebuyability beats novelty.
- Existing-layer check, no mature industry or community reference layer already documents the geometry. (This rules out bicycles, motorcycles, mechanical keyboards, 3D printer nozzles, RC connectors.)
- Ecosystem-selection prerequisite, for the convergence-led wedge, a discoverable buyer-side compatibility anchor must already exist. (This rules out Oral-B, Sonicare, most Western IoT brands for the convergence path.)
Categories that don't pass all three are out of scope, even when they superficially look like good candidates.
See the concept for the underlying framing.