- Kernel
- The funding program covering work the network cannot operate without. Funded as a near-fixed cost on an annual term with audits, not against milestones.
- Function
- A capability the network needs, named by what it does rather than by which repo provides it. Functions outlive implementations — the function survives when the code that serves it is replaced.
- Dependency
- A library, service, or system a function relies on to work. A dependency with one maintainer and no substitute is a risk to every function above it.
- Tier
- How replaceable a function is, from Irreplaceable downwards. Tier sets the funding posture and whether redundancy is required. A tier the catalogue holds nothing in is not shown on this page — the definition stands, there is simply nothing filed under it.
- Health metric
- A commitment with a reading cadence and a public endpoint, reported by the maintaining team and fetched by a pipeline that team does not control. Where a signed agreement states a threshold the reading is judged against it; where it does not, see Unscored. A function with no metric cannot be assessed at all and is marked not measured.
- Unscored
- Measured, but not judged — no threshold was in force for that metric on the day it was read. Usually because the signed appendix names the metric but leaves its number to confirm, which only the recipient can settle. Most readings on this page are unscored, which is why the page reports coverage rather than a pass rate: blue means the number exists, and nothing more.
- Gap
- A period the source was asked and gave back no defensible number — an endpoint down, a schema moved. Not a zero, not a breach, and not the team going quiet: it is a hole in the instrument, and it is drawn amber. A period we failed to ask in is a different claim again, drawn in its own grey and dropped from the coverage denominator.
- Coverage · 30d
- How much of the record was actually read — periods that carried a reading against the periods the cadence promised, counted at each metric's own cadence rather than per day, so a weekly metric is not penalised for being coarse. The count starts when automated collection started, not 30 days ago: a source cannot be backfilled to before anyone was watching it, so a young commitment is measured against its own run. Days the monitoring pipeline itself did not run are dropped from the denominator entirely — that is a failure to measure, not the team's failure to report — which is why a strip can show a visible gap beside 100%. The bars, unlike the fraction, always span the full 30 days.
- Domain
- The area of the stack a function sits in — blockchain core and physical storage, coordination and hardening, storage market middleware, UX/DX.
- Single maintainer
- A function with exactly one team reporting on it. Tolerable at the lower tiers, a named risk at the top two, where the posture calls for two or more independent implementations — if that team stops, nothing else provides the function.