release: 0.121.0

[stainless-app]

Automated Release PR

0.121.0 (2026-04-09)

Full Changelog: v0.120.0...v0.121.0

Features

• api: add decline count attributes to auth_rules conditions (c511d14)
• api: add INTERCHANGE/CHARGEBACK/PROVISIONAL_CREDIT_ACCOUNT account types (aa96cd4)
• api: add override_company_name parameter to payment create method (babec29)
• api: add statement_totals field to Statement model (3b035bc)
• api: add transaction_token field to auth_rules result types (25fcd02)
• internal: implement indices array format for query and form serialization (bef46fb)

Bug Fixes

• client: preserve hardcoded query params when merging with user params (89aced4)
• types: make credit_product_token optional in Statement (6caf4c4)
• types: make fields required, remove hostname in card authorization approval webhook (80c1bcc)
• types: remove INTERCHANGE and CHARGEBACK from financial account types (5567809)

Chores

• ci: skip lint on metadata-only changes (7d73b7b)

Documentation

• api: update nature_of_business and qr_code_url parameter descriptions (7514c59)

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