For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Book a demoLog inStart for free
  • Overview
    • Introduction
    • How it works
    • Quickstart
    • Customer showcase
  • Working with SDKs
    • Project structure
    • Adding custom code
    • Migrating to Replay
    • Capabilities
  • Generators
      • Generating an SDK
      • Publishing to RubyGems
      • Configuration
      • Adding custom code
      • Changelog
      • Customer showcase
  • Reference
    • generators.yml
Checking status...
SOC2Soc 2 Type II
© 2026 Fern • Birch Solutions, Inc., a Postman company

Documentation

SDKsDocsAsk FernCLI Reference

API Definitions

OpenAPIAsyncAPIOpenRPCgRPC

Resources

BlogSupportPricing

Company

Brand KitPrivacy PolicyTerms of Service
LogoLogo
Book a demoLog inStart for free
GeneratorsRuby

Changelog

December 5, 2025
December 5, 2025

1.0.0-rc61

(fix): Move default environment resolution from request functions to root client instantiation. Without this change, a non-default base URL set on the client initialization is never used. The default environment fallback was happening at the request layer, which meant any base_url passed to individual requests would fall back to the default environment if not explicitly provided in request_options—even when the root client was initialized with a custom base_url.

1.0.0-rc60

(feat): Add extraDependencies and extraDevDependencies config flags to Ruby v2 SDK generator. These options allow users to specify additional gem dependencies to include in the generated gemspec (extraDependencies) and Gemfile (extraDevDependencies). Values are written directly as version constraints (e.g., { "my-gem": "~> 6.0" } produces spec.add_dependency "my-gem", "~> 6.0").

Was this page helpful?
Edit this page
Previous

December 8, 2025

Next

December 4, 2025