What changed in the Stripe, Shopify, Twilio and OpenAI APIs, October 2026
API Changelog Brief is a dated list of what four API vendors published on their public changelogs, with the breaking changes and deprecations marked. This issue covers 2026-09-05 to 2026-10-05.
It holds 142 entries: 39 breaking changes, 7 deprecations and 96 new features, changes and fixes. 8 entries carry a deadline stated by the vendor; 3 of those deadlines had already passed on 2026-10-05. Each vendor page below is free and lists every entry with its date, type and a one-line summary.
| Vendor page | Entries | Breaking | Deprecations |
|---|---|---|---|
| Stripe API changes, October 2026 | 68 | 29 | 0 |
| Shopify API changes, October 2026 | 43 | 9 | 3 |
| Twilio API changes, October 2026 | 16 | 1 | 1 |
| OpenAI API changes, October 2026 | 15 | 0 | 3 |
| Total | 142 | 39 | 7 |
How the entries were collected, which pages were read and what is missing: method and coverage.
Breaking changes and deprecations only, per vendor:
- Stripe API breaking changes and deprecations, Sep 5 to Oct 5, 2026
- Shopify API breaking changes and deprecations, Sep 5 to Oct 5, 2026
- OpenAI API breaking changes and deprecations, Sep 5 to Oct 5, 2026
What the paid brief adds
This page is the free list. The paid issue covers all 142 entries and adds:
- the action checklist: what to do for each entry, or a plain "none" when the change needs nothing from you;
- an "Act first" section: the 46 breaking changes and deprecations and nothing else, grouped by vendor, each with what to do;
- a source link for every entry;
- a CSV file with all entries, one row each, to filter or import.
Issue 1, a one-time $7 download: an HTML brief plus a CSV. A short README text file comes with them. The issue covers 2026-09-05 to 2026-10-05. You pay once for this one dated issue: nothing is billed again, and no later issue or update is included. The price and terms are shown on the Gumroad page before you pay.