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 Maven Central
      • 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
GeneratorsJava

Changelog

May 7, 2026
May 7, 2026

4.8.4

(chore): Apply latest Ubuntu security updates to the Java model generator container (gradle:8.5.0-jdk17-jammy) at build time so OS-level package CVEs are picked up.

4.8.3

(chore): Patch the npm-bundled ip-address package to 10.2.0 in the Java SDK generator container to address GHSA-v2v4-37r5-5v8g (CVE-2026-42338): XSS in Address6 HTML-emitting methods. The vulnerable copy was pulled in transitively via socks-proxy-agent -> socks -> ip-address@10.1.0 inside /usr/local/lib/node_modules/npm.

Was this page helpful?
Edit this page
Previous

May 11, 2026

Next

May 6, 2026