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Best custom API plugins for WordPress

The most popular custom API plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. MultiManager WP leads with 2K+ active installs, ahead of Custom API for WP (1K+) and Custom API Creator (10+). All 4 plugins tagged “custom api” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 4 custom API plugins

  1. 1.
    MultiManager WP

    The most installed custom API plugin, with 2K+ active installs. No reviews yet, updated 4 months ago.

  2. 2.
    Custom API for WP

    1K+ active installs. Rated 4.8 from 45 reviews, updated 3 weeks ago.

  3. 3.
    Custom API Creator

    10+ active installs. No reviews yet, last updated 2 years ago. Tested only up to WordPress 6.6.11.

  4. 4.
    Vendor API for Bazzar

    Fewer than 10 active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.8.12.

All 4 plugins tagged “custom api”