Appending rules to a subscription with Mixin (without editing it)

Editing the subscription-generated YAML is the classic beginner trap — the next auto-update wipes your changes. Clash for Windows' Mixin is a patch layered over every profile: the subscription updates freely, the patch persists.

Steps

1. Open Settings, find Profile Mixin, click Edit next to YAML;
2. Write what you want to add or override — e.g. two high-priority rules:

mixin:
  rules:
    - DOMAIN-SUFFIX,example-bank.com,DIRECT
    - DOMAIN-KEYWORD,tracker,REJECT

3. Save, then flip the Mixin enable switch on (the step everyone forgets);
4. Re-select the active profile on the Profiles page to reload, then verify on the Connections page.

Caveat

In YAML mode the rules field replaces the original wholesale — write two rules and two rules is all you have. To "insert before the originals" you need JavaScript mode, which can concatenate with the existing rules; templates and syntax in "Mixin basics: YAML vs JavaScript". For anything rule-related, most people go straight to the JS template once and are done.