Container Registries (OCI Distribution)

Where this market publishes its structure

• OCI conformance register (opencontainers/oci-conformance PRODUCT.yaml + junit.xml) machine-readable
• Providers' own OCI support pages (fetched, saved under evidence/compatibility/) machine-readable
• Providers' own contracts naming the OCI / Docker Registry HTTP API V2 machine-readable
• Structural detection: /v2/{name}/manifests|blobs paths (ours, marked) machine-readable
• Harbor's self-published conformance report (CI badge, not in the OCI register) not machine-readable: HTML report on GCS; not parsed

Own = declares at least one integration itself; covered = visible only because an aggregator, standards body, regulator or partner contract names it; distribution-only = listed only on cloud marketplaces it sells through, a channel reported beside, never counted as its own declared integrations; undeclared = nothing we can read, so no number; declares_compatibility = providers with a `compatible` shape vote, report only (kin, 2026-10-13): never counted as own, never in depth or position.

Taxonomy how this market maps onto apis.io

Derived 2026-10-23 from the 20 providers in this market we could resolve in the catalog. The percentage is the share of those providers carrying each one; it describes the market, not the tag or industry. Tag groups have no page of their own yet, so they are listed unlinked.

share of resolved cohort carrying it; tags >=0.20 & >=3 members (max 12, junk dropped), tag_groups >=0.20 (cooccurrence, non-cross-cutting; max 8), industries >=0.20 (max 6), areas >=0.10 (max 6; areas are keyword-matched and sparse), capabilities L1 >=0.20 (max 8); derive-market-taxonomy.py

Leaders by position (provisional)

Provisional: grouped by position, depth compared within a position only. Distribution (cloud marketplaces) and iPaaS bridges are counted beside position, never inside it. Unknown-builder listings are left out of position shares and counted here.

gravity 1 · other companies invest to build on it

builds-on 1 · publishes apps on other platforms' stores

covered 2 · reached mainly through aggregators

standard 8 · listed by a voluntary standard's own directory

mixed 2 · no single mode dominates

undeclared 6 · declares nothing we can read: no number

Shape adoption report only — not weighted

Pattern: register. Shape gravity (counted by company, one edge per provider, the best evidence kept): 16. Convergence in the cohort: 15 of 19 (78.9%) — cohort members (minus the anchor's family, mediators and rival shapes) with at least one compatible edge to the shape, read from evidence.

oci-distribution anchor Open Container Initiative · 16 adopters, 16 declared by the provider

By degree: full 10, declared-unqualified 6. By evidence: conformance-register 7, own-docs 7, own-contract 2.

• In the cohort, declaring nothing we can read: JFrog Container Registry, Scaleway, Google Cloud Container Registry, ORAS
• Evidence ladder: conformance-register > own-docs > own-contract > own-blog > ae-structural. Degrees: full | declared-subset | declared-unqualified | interoperable-subset | same-vocabulary-own-path.

Snapshot timeline 3 weekly snapshot(s); nothing is weighted until it holds across four