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apis.guru
In short: Getting listed on APIs.guru OpenAPI Directory is free. Plan for about 10 minutes — it is a form plus links and assets you already have.
What they ask for: When your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata.
When your tool exposes a stable public API, host an official OpenAPI definition at a permanent URL and submit it with accurate ownership, category, logo, and metadata.
The API must be public through clearly documented access steps, persistent, independently useful, and described by a valid machine-readable definition. APIs.guru aggregates rather than hosts the specification and automatically rechecks its source, so keep the canonical spec stable and current.
Open the submission page on apis.guru and complete its form — that is the "Open submit page" link at the top of this page.
The API must be public through clearly documented access steps, persistent, independently useful, and described by a valid machine-readable definition. APIs.guru aggregates rather than hosts the specification and automatically rechecks its source, so keep the canonical spec stable and current.
Priority sets the band — this one is high. Cost (free) and effort (quick) move it within that band, which puts it in the high impact tier. The score orders a submission queue. It is not a measure of the site’s domain authority, traffic or quality.