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Document respect-per-spec-base-path OpenAPI setting - #6765

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Document respect-per-spec-base-path OpenAPI setting#6765
devin-ai-integration[bot] wants to merge 1 commit into
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devin/1787850377-respect-per-spec-base-path

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Summary

Fern projects that combine several OpenAPI specs used to end up with a single API-wide base path: whichever spec's x-fern-base-path won the merge got prepended to every endpoint, and the other specs' prefixes were dropped from the generated SDK. The CLI now has an opt-in respect-per-spec-base-path setting that applies each document's base path to its own endpoints before the merge, so a project with, say, an OAuth spec at / and a main API at /api/v3 generates an SDK whose URLs are right for both without hand-patching the client or contorting base_url. This PR documents the setting.

Implements docs for: feat(cli): add respect-per-spec-base-path setting for per-spec x-fern-base-path (fern-api/fern#17495)

Pages changed

  • fern/snippets/openapi-specs.mdx — new settings.respect-per-spec-base-path <ParamField> (boolean, default false) covering the per-spec behavior, the parameterized-base-path carve-out and conflict error, the / and double-prefix no-ops, and the base_url migration note for anyone who worked around the old collapsing. This snippet is the single canonical OpenAPI settings list, transcluded into both the SDKs and API Definitions generators.yml references.
  • fern/products/api-def/openapi/extensions/base-path.mdx — one-sentence cross-reference from the x-fern-base-path extension page to the new setting.

Checks run: pre-commit run --files <changed> (Vale clean) and fern check --warnings (0 errors; the 8 warnings are preexisting and unrelated).

Link to Devin session: https://app.devin.ai/sessions/5349e75bd7834d8295514f562eb7c327
Open in Devin Desktop: https://app.devin.ai/desktop/session/5349e75bd7834d8295514f562eb7c327?variant=devin

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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