# Frontier

Band: established — Settled. Documented by a primary source and not seriously disputed.
Group: How work is arranged
Implemented by: https://clickai.dev/skills/grilling

The set of nodes whose prerequisites are all satisfied — the edge of what is takeable now. On a tracker that is items which are ready-labelled, unassigned, and blocked neither by a dependency edge nor by a label. In an interview it is every decision whose prerequisites are already settled. Same word, same meaning, two surfaces. An empty frontier is a fact that needs a reason attached — all claimed, triage stalled, or everything blocked — because an empty answer with no breakdown sends people guessing.

## See also

- [Task graph (dependency graph)](https://clickai.dev/legend/task-graph)
- [Fog](https://clickai.dev/legend/fog)
- [Claim (read-before-write)](https://clickai.dev/legend/claim)

---

Full legend: https://clickai.dev/legend.md