release: 4.0.0

[stainless-app]

Automated Release PR

4.0.0 (2026-01-17)

Full Changelog: v3.2.0...v4.0.0

⚠ BREAKING CHANGES

• Remove use_list_prices from Rate objects (cface3)
• Add revenue_system_payments to Payment object and revenue_system_invoice to Invoice object (892c65)

Features

• Add recurring commit ID and subscription config to Commit and Credit objects. (1a719d)
• Add support for custom fields on package terms (6f9712)
• client: add support for binary request streaming (4fdf13d)

Chores

• internal: codegen related update (5359acb)
• internal: update actions/checkout version (874dc0b)

Documentation

• prominently feature MCP server setup in root SDK readmes (0708fd1)

---

This pull request is managed by Stainless's GitHub App.

The semver version number is based on included commit messages. Alternatively, you can manually set the version number in the title of this pull request.

For a better experience, it is recommended to use either rebase-merge or squash-merge when merging this pull request.

🔗 Stainless website
📚 Read the docs
🙋 Reach out for help or questions

[stainless-app]

Release version edited manually

The Pull Request version has been manually set to 4.0.0 and will be used for the release.

If you instead want to use the version number 3.3.0 generated from conventional commits, just remove the label autorelease: custom version from this Pull Request.

[stainless-app]

🤖 Release is at https://github.com/Metronome-Industries/metronome-python/releases/tag/v4.0.0 🌻