Ontology

MAXO

Medical Action Ontology

An ontology to represent medically relevant actions, procedures, therapies, interventions, and recommendations.

medicineoboontologyrare disorder
B82

FAIR 48/48

Version 2026-01-15

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagegithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)maxo2026-01-157,120267025 Oct 2026
OBO Dashboardmaxo2026-01-152,673——25 Feb 2026

Ontology IRI http://purl.obolibrary.org/obo/maxo.owl
Version IRI http://purl.obolibrary.org/obo/maxo/releases/2026-01-15/maxo.owl

Languages de en en-us

Imports from (18)
BFO CHEBI CL COB FOODON GO HP IAO NBO NCBITaxon OBI OMO PATO PO PR RO SO UBERON

Reused by (9)
ECTO MONDO OOSTT ADO BMONT COVOC CPONT EUPATH EXMO

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
yes
ROBOT report
—
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
20,779 · 25.92% entities reused

Also registered as
aberowl: MAXO bioportal: MAXO fairsharing: FAIRsharing.945c78 obofoundry: maxo ols: maxo ontobee: MAXO wikidata.entity: Q113012668

Automated evaluation

F Findable FAIR12/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)5: OLS, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)doi:10.1101/2023.07.13.23292612+3
A Accessible FAIR12/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR12/12
  • Formal machine-readable format (I1)OWL, OBO+5
  • Semantic-web IRIs (I2)OWL, OBO+3
  • References other vocabularies (I3)imports 18: bfo, chebi, cl, cob, foodon, go, hp, iao…+4
R Reusable FAIR12/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)2026-01-15 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 12/13 checks pass+3
Q Ontology consistency & quality16/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
  • OWL 2 DL profilein OWL 2 DL+2
  • Upper-ontology alignmentimports BFO, COB+3
  • Standard relations (RO)imports RO+1
  • ROBOT report: no errorsno ROBOT report available0
  • ROBOT report: warning densityno ROBOT report available0
  • Pitfall scan: no critical pitfallsno pitfall scan or ROBOT report yet0
M Maintenance12/16
  • Recency2026-10-10 → 0.5 months (≤ 3 months)+10
  • Release cadence (12 months)1 release (GitHub releases)+2
U Community adoption6/16
  • Documented adopting projects1 project+2
  • Reused by other ontologies9: ecto, mondo, oostt, ado, bmont, covoc…+2
  • Community signalmax(stars 66 → 2, citations 0 → 0)+2
P Penalties (inactivity & inconsistency)0
  • Time since last activity0.0 years → 4 × max(0, 0.0 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0

FAIR subtotal 48/48 · earned 82/100 = 82/100 → grade B

Community adoption 1

  • hpo.jax.org

    MAxO is used to capture disease-treatment relations from the scientific literature.

    Source: OBO Foundry registry

Know a project that uses MAXO? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

RunScoreFAIRVersion evaluatedTermsSnapshot
26 Oct 2026, 03:31 UTC82 B482026-01-157,120JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 200)github.com26 Oct 2026, 03:05 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 03:05 UTC
Download link check (HTTP 200)purl.obolibrary.org26 Oct 2026, 03:05 UTC
Artefact header (version IRI)release-assets.githubusercontent.com26 Oct 2026, 03:05 UTC
Git refs (commit 59b5d75, latest tag v2026-01-15)github.com26 Oct 2026, 03:05 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 03:05 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 03:05 UTC
OBO Foundry status, license & usagesobofoundry.org26 Oct 2026, 02:37 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 03:05 UTC
OBO Dashboard (checked 25 Feb 2026)dashboard.obofoundry.org26 Oct 2026, 02:37 UTC
Crossref citations (doi:10.1101/2023.07.13.23292612)api.crossref.org26 Oct 2026, 03:05 UTC

Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot

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