How do I track Mailchimp API changes?

apik.dev tracks the Mailchimp API for you. We scrape the public Mailchimp API documentation on a schedule, diff every revision and grade what changed — so you never have to re-read the Mailchimp changelog by hand. Subscribe once and we monitor it continuously.

How do I get notified when the Mailchimp API changes?

When apik detects a Mailchimp API change, you're notified by email or webhook within hours — with the full diff, a severity grade (breaking vs. informational) and a short migration summary. You can choose to be alerted on breaking changes only.

What kinds of Mailchimp API changes does apik detect?

Endpoint changes, base-URL changes, authentication and parameter changes, schema changes and deprecations. Every Mailchimp API change is categorised and severity-graded so you can triage at a glance.

How often is the Mailchimp API checked for changes?

apik re-checks the public Mailchimp documentation on a daily schedule. The most recent check for Mailchimp ran on Jun 20, 2026.

TRACKING SHEET — 2 SOURCE(S)

Mailchimp API changes

Mailchimp is an email marketing and automation platform. Signals: the developer release-notes page and the Transactional (Mandrill) OpenAPI 3.1 spec (99 paths). The hosted Marketing Swagger.json uses external $ref files per path (only the 10.7MB ?expand variant inlines them), so

LAST CHECKED

Jun 20, 2026

TRACKED SINCE

Mar 26, 2026

CHANGES / 90D

107

BREAKING / 90D

101

DETECTED CHANGES — MOST RECENT

BREAKING Change Jun 20, 2026

Update an existing webhook

- "version": "2024-09-30"
+ "version": "2025-06-01"
- POST /v1/mailchimp/charges
+ POST /v1/mailchimp/payments  (auth scope changed)

🔒 Full diffs at launch — join the waitlist

BREAKING Change Jun 20, 2026

Get the list of all webhooks

- "version": "2024-09-30"
+ "version": "2025-06-01"
- POST /v1/mailchimp/charges
+ POST /v1/mailchimp/payments  (auth scope changed)

🔒 Full diffs at launch — join the waitlist

BREAKING Change Jun 20, 2026

Get webhook information

- "version": "2024-09-30"
+ "version": "2025-06-01"
- POST /v1/mailchimp/charges
+ POST /v1/mailchimp/payments  (auth scope changed)

🔒 Full diffs at launch — join the waitlist

BREAKING Change Jun 20, 2026

Delete an existing webhook

- "version": "2024-09-30"
+ "version": "2025-06-01"
- POST /v1/mailchimp/charges
+ POST /v1/mailchimp/payments  (auth scope changed)

🔒 Full diffs at launch — join the waitlist

BREAKING Change Jun 20, 2026

Add a new webhook

- "version": "2024-09-30"
+ "version": "2025-06-01"
- POST /v1/mailchimp/charges
+ POST /v1/mailchimp/payments  (auth scope changed)

🔒 Full diffs at launch — join the waitlist

How to track Mailchimp API changes

The Mailchimp API evolves without warning — endpoints move, parameters change, auth scopes tighten and old fields get deprecated. apik.dev watches the public Mailchimp API documentation for you: we scrape it on a schedule, diff every revision and grade each change as breaking or informational. Instead of re-reading the Mailchimp changelog by hand, you get a clean, dated record of exactly what changed — and why it matters.

Get notified when the Mailchimp API changes

Subscribe to Mailchimp and apik pages you by email or webhook the moment a change is detected — with the full diff, a severity grade and a short migration summary. Filter to Mailchimp breaking changes and deprecations only, so you hear about what will actually break your integration and nothing else.

FREQUENTLY ASKED — MAILCHIMP

How do I track Mailchimp API changes?: apik.dev tracks the Mailchimp API for you. We scrape the public Mailchimp API documentation on a schedule, diff every revision and grade what changed — so you never have to re-read the Mailchimp changelog by hand. Subscribe once and we monitor it continuously.
How do I get notified when the Mailchimp API changes?: When apik detects a Mailchimp API change, you're notified by email or webhook within hours — with the full diff, a severity grade (breaking vs. informational) and a short migration summary. You can choose to be alerted on breaking changes only.
What kinds of Mailchimp API changes does apik detect?: Endpoint changes, base-URL changes, authentication and parameter changes, schema changes and deprecations. Every Mailchimp API change is categorised and severity-graded so you can triage at a glance.
How often is the Mailchimp API checked for changes?: apik re-checks the public Mailchimp documentation on a daily schedule. The most recent check for Mailchimp ran on Jun 20, 2026.

FIG. — GET PAGED NEXT TIME

Don't find out from a 500.

apik is in private development. Join the waitlist and we'll email you the moment Mailchimp tracking goes live — full diffs, severity grading and migration summaries.

Mailchimp official docs ↗