Tools
Fern
Generates SDKs, API documentation, and CLIs from an OpenAPI spec, enabling small teams to build developer portals.
From one API definition it generates idiomatic SDKs in the major languages plus a hosted docs site with an interactive API explorer. Docs live in your repo and publish through CI, keeping reference, guides, and client libraries in lockstep with the spec. Now part of Postman, it suits API companies that want a complete developer portal without stitching together separate vendors.
Added July 12, 2026
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Where Fern fits