OBOFoundry · matentzn · Apr 16, 2026 · Apr 7, 2026 · Apr 7, 2026 · Apr 7, 2026
diff --git a/_posts/2016-11-26-S3-switch.md b/_posts/2016-11-26-S3-switch.md
@@ -20,7 +20,7 @@ These purls should always be used to reference the
 ontology. Maintainers of ontologies have the option of deciding what
 their PURL resolves to. Many choose to resolve to the [central OBO
 build
-URLs](http://obofoundry.org/faq/what-is-the-build-field).
+URLs](https://web.archive.org/web/20230326002924/http://obofoundry.org/faq/what-is-the-build-field).
 
 Historically these have always resolved to
 http://berkeleybop.org/ontologies/ -- we have recently changed this to

diff --git a/faq/index.md b/faq/index.md
@@ -28,7 +28,6 @@ title: OBO Foundry Frequently Asked Questions
 
 - [How do I edit the metadata for my ontology?](/faq/how-do-i-edit-metadata.html)
 - [What are permissible values in the metadata file, e.g. for 'publications'?](/faq/permissible-metadata-content.html)
-- [What is the `build` object in the ontology metadata?](/faq/what-is-the-build-field.html)
 - [What does it mean for an ontology to be flagged as 'inactive', 'unresponsive', 'orphaned' or 'obsolete'?](/docs/OntologyStatus.html)
 
 ### OBO Foundry Dashboard

diff --git a/faq/what-is-the-build-field.md b/faq/what-is-the-build-field.md
diff --git a/faq/where-is-the-obo-file.md b/faq/where-is-the-obo-file.md
@@ -46,6 +46,4 @@ Developers can OPTIONALLY produce ontologies in other formats. These are convent
 
 It does not matter to us if you maintain the source for your ontology
 in obo or owl or some hybrid. You have the option of either publishing
-the alternate format yourself (using a tool like ROBOT) _or_ you can
-have the OBO central build pipeline do this for you. For more
-information, see the FAQ entry [What is the Build field?](what-is-the-build-field.md).
+the alternate format yourself (using a tool like ROBOT).
diff --git a/ontology/aeo.md b/ontology/aeo.md
@@ -2,11 +2,6 @@
 layout: ontology_detail
 id: aeo
 title: Anatomical Entity Ontology
-build:
-  checkout: git clone https://github.com/obophenotype/human-developmental-anatomy-ontology.git
-  method: vcs
-  path: src/ontology
-  system: git
 contact:
   email: J.Bard@ed.ac.uk
   label: Jonathan Bard

diff --git a/ontology/aero.md b/ontology/aero.md
@@ -2,9 +2,6 @@
 layout: ontology_detail
 id: aero
 title: Adverse Event Reporting Ontology
-build:
-  method: owl2obo
-  source_url: http://purl.obolibrary.org/obo/aero.owl
 contact:
   email: mcourtot@gmail.com
   label: Melanie Courtot

diff --git a/ontology/aism.md b/ontology/aism.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: aism
 title: Ontology for the Anatomy of the Insect SkeletoMuscular system (AISM)
-build:
-  checkout: git clone https://github.com/insect-morphology/aism
-  path: .
-  system: git
 contact:
   email: entiminae@gmail.com
   github: JCGiron

diff --git a/ontology/amphx.md b/ontology/amphx.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: amphx
 title: The Amphioxus Development and Anatomy Ontology
-build:
-  checkout: git clone https://github.com/EBISPOT/amphx_ontology.git
-  path: .
-  system: git
 contact:
   email: hescriva@obs-banyuls.fr
   github: hescriva

diff --git a/ontology/apo.md b/ontology/apo.md
@@ -2,9 +2,6 @@
 layout: ontology_detail
 id: apo
 title: Ascomycete phenotype ontology
-build:
-  method: obo2owl
-  source_url: https://raw.githubusercontent.com/obophenotype/ascomycete-phenotype-ontology/master/apo.obo
 contact:
   email: stacia@stanford.edu
   github: srengel

diff --git a/ontology/bila.md b/ontology/bila.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: bila
 title: Bilateria anatomy
-build:
-  insert_ontology_id: true
-  method: obo2owl
-  source_url: http://4dx.embl.de/4DXpress_4d/edocs/bilateria_mrca.obo
 contact:
   email: henrich@embl.de
   github: ThorstenHen

diff --git a/ontology/bspo.md b/ontology/bspo.md
@@ -2,12 +2,6 @@
 layout: ontology_detail
 id: bspo
 title: Biological Spatial Ontology
-build:
-  checkout: git clone https://github.com/obophenotype/biological-spatial-ontology.git
-  infallible: 1
-  method: vcs
-  path: src/ontology
-  system: git
 contact:
   email: cjmungall@lbl.gov
   github: cmungall

diff --git a/ontology/bto.md b/ontology/bto.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: bto
 title: BRENDA tissue / enzyme source
-build:
-  checkout: git clone https://github.com/BRENDA-Enzymes/BTO.git
-  path: .
-  system: git
 contact:
   email: c.dudek@tu-braunschweig.de
   github: chdudek

diff --git a/ontology/caro.md b/ontology/caro.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: caro
 title: Common Anatomy Reference Ontology
-build:
-  method: obo2owl
-  notes: moving to owl soon
-  source_url: http://obo.cvs.sourceforge.net/*checkout*/obo/obo/ontology/anatomy/caro/caro.obo
 contact:
   email: haendel@ohsu.edu
   github: mellybelly

diff --git a/ontology/cdao.md b/ontology/cdao.md
@@ -2,9 +2,6 @@
 layout: ontology_detail
 id: cdao
 title: Comparative Data Analysis Ontology
-build:
-  method: owl2obo
-  source_url: http://purl.obolibrary.org/obo/cdao.owl
 contact:
   email: balhoff@renci.org
   github: balhoff

diff --git a/ontology/cdno.md b/ontology/cdno.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: cdno
 title: Compositional Dietary Nutrition Ontology
-build:
-  checkout: git clone https://github.com/CompositionalDietaryNutritionOntology/cdno.git
-  path: .
-  system: git
 contact:
   email: landreshdz@gmail.com
   github: LilyAndres

diff --git a/ontology/chebi.md b/ontology/chebi.md
@@ -6,10 +6,6 @@ browsers:
 - title: EBI CHEBI Browser
   label: CHEBI
   url: http://www.ebi.ac.uk/chebi/chebiOntology.do?treeView=true&chebiId=CHEBI:24431#graphView
-build:
-  infallible: 1
-  method: obo2owl
-  source_url: ftp://ftp.ebi.ac.uk/pub/databases/chebi/ontology/chebi.obo
 contact:
   email: amalik@ebi.ac.uk
   github: amalik01

diff --git a/ontology/cheminf.md b/ontology/cheminf.md
@@ -2,9 +2,6 @@
 layout: ontology_detail
 id: cheminf
 title: Chemical Information Ontology
-build:
-  method: owl2obo
-  source_url: https://raw.githubusercontent.com/semanticchemistry/semanticchemistry/master/ontology/cheminf.owl
 contact:
   email: egon.willighagen@gmail.com
   github: egonw

diff --git a/ontology/clao.md b/ontology/clao.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: clao
 title: Collembola Anatomy Ontology
-build:
-  checkout: git clone https://github.com/luis-gonzalez-m/Collembola.git
-  path: .
-  system: git
 contact:
   email: lagonzalezmo@unal.edu.co
   github: luis-gonzalez-m

diff --git a/ontology/clyh.md b/ontology/clyh.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: clyh
 title: Clytia hemisphaerica Development and Anatomy Ontology
-build:
-  checkout: git clone https://github.com/EBISPOT/clyh_ontology.git
-  path: .
-  system: git
 contact:
   email: lucas.leclere@obs-banyuls.fr
   github: Leclere-L

diff --git a/ontology/cmo.md b/ontology/cmo.md
@@ -6,9 +6,6 @@ browsers:
 - title: RGD Ontology Browser
   label: RGD
   url: http://rgd.mcw.edu/rgdweb/ontology/view.html?acc_id=CMO:0000000
-build:
-  method: obo2owl
-  source_url: https://download.rgd.mcw.edu/ontology/clinical_measurement/clinical_measurement.obo
 contact:
   email: jrsmith@mcw.edu
   github: jrsjrs

diff --git a/ontology/cro.md b/ontology/cro.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: cro
 title: Contributor Role Ontology
-build:
-  checkout: git clone https://github.com/data2health/contributor-role-ontology.git
-  path: src/ontology
-  system: git
 contact:
   email: whimar@ohsu.edu
   github: marijane

diff --git a/ontology/cvdo.md b/ontology/cvdo.md
@@ -2,12 +2,6 @@
 layout: ontology_detail
 id: cvdo
 title: Cardiovascular Disease Ontology
-build:
-  method: owl2obo
-  publications:
-  - id: http://dx.doi.org/10.3233/978-1-61499-438-1-409
-    title: The Cardiovascular Disease Ontology
-  source_url: http://purl.obolibrary.org/obo/cvdo.owl
 contact:
   email: paul.fabry@usherbrooke.ca
   github: pfabry

diff --git a/ontology/ddanat.md b/ontology/ddanat.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: ddanat
 title: Dictyostelium discoideum anatomy
-build:
-  insert_ontology_id: true
-  method: obo2owl
-  source_url: https://raw.githubusercontent.com/dictyBase/migration-data/master/ontologies/dicty_anatomy.obo
 contact:
   email: pfey@northwestern.edu
   github: pfey03

diff --git a/ontology/ddpheno.md b/ontology/ddpheno.md
@@ -2,10 +2,6 @@
 layout: ontology_detail
 id: ddpheno
 title: Dictyostelium discoideum phenotype ontology
-build:
-  checkout: git clone https://github.com/obophenotype/dicty-phenotype-ontology.git
-  path: .
-  system: git
 contact:
   email: pfey@northwestern.edu
   github: pfey03

diff --git a/ontology/disdriv.md b/ontology/disdriv.md
@@ -6,8 +6,6 @@ browsers:
 - title: DO Browser
   label: DO
   url: https://disease-ontology.org/
-build:
-  source_url: https://raw.githubusercontent.com/DiseaseOntology/DiseaseDriversOntology/refs/heads/main/src/ontology/disdriv.owl
 contact:
   email: lynn.schriml@gmail.com
   github: lschriml

diff --git a/ontology/doid.md b/ontology/doid.md
@@ -6,10 +6,6 @@ browsers:
 - title: DO Browser
   label: DO
   url: https://disease-ontology.org/do
-build:
-  infallible: 1
-  method: obo2owl
-  source_url: https://raw.githubusercontent.com/DiseaseOntology/HumanDiseaseOntology/master/src/ontology/doid.obo
 contact:
   email: lynn.schriml@gmail.com
   github: lschriml