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Changelog

April 16, 2026
April 16, 2026

5.5.0

(feat): Add use_request_defaults top-level config option with three modes: "none", "parameters" (query params and headers only), and "all" (query params, headers, request body params, and pydantic model fields). This takes precedence over the existing pydantic_config.use_provided_defaults boolean, which will be deprecated in a future release.

(fix): Fix mypy error in generated client wrapper when a non-string global header is declared (e.g. Request-Timeout: integer). The generator emits headers: Dict[str, str] but previously assigned the raw typed member (e.g. int) directly, causing Incompatible types in assignment. Non-string global header values are now wrapped with str(...) when assigned. String-typed headers are unchanged.

5.4.0

(chore): Bump @fern-api/generator-cli to 0.9.8. Changelog URLs in generated PRs now use the commit SHA instead of the PR branch name, keeping the link valid after the branch is deleted or squash-merged.

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