Add openapi.json route documentation (#2143) (#2159)

[faessler]

What does it do?

Porting dev docs "Adds documentation for new route /documentation/<version>/openapi.json provided by the documentation plugin." into v5.

See #2159 for more information.

Related issue(s)/PR(s)

• feat(documentation): add /openapi.json route (strapi/documentation#2143) (#20871) strapi#24550
• feat(documentation): add /openapi.json route (strapi/documentation#2143) strapi#20871
• Swagger and openapi json files do not exists #2143
• [Bug]: No swagger or openapi.json #590
• [Request]: How do I ingest a Openapi.yml or openapi.json file to autocreate the models #366
• Not able to access endpoints for openapi.json and swagger.json strapi#10734

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Project	Deployment	Preview	Comments	Updated (UTC)
documentation	Ready	Preview	Comment	Oct 10, 2025 7:03am

[pwizla]

Thanks, @faessler!
LGTM.
Just waiting for the strapi/strapi-related PR to merge the present one 👀