REST API for Relevanssi
The plugin provides a REST API endpoint for the Relevanssi search plugin.
Consider an alternative
REST API for Relevanssi shows warning signs in 2026 — compare the alternatives below before installing. It runs on 200+ sites, is rated 5/5 and was last updated 3 years ago, and scores 33/100 on our health check.
- Small user base (200+ active installs)
- Very few reviews so far
- No update in 3 years
- Only tested up to WordPress 6.2 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where REST API for Relevanssi stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| api | >100 |
| Relevanssi | #14 |
| rest-api | >100 |
| search | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 5 from 3 reviews
About REST API for Relevanssi
From the official readme · v1.18Description
This plugin provides simple REST API for the popular search WordPress search engine – Relevanssi.
As far as this plugin provides API for the Relevanssi plugin, it should be installed.
Key features
- Search through posts of a certain type. By default all types.
- Results in pagination and optional.
- Sets X-WP-Total header with a total number of records, the same way as the default search API does.
- Sets X-WP-TotalPages header with a total number of pages, the same way as the default search API does.
- Multilingual websites support. Both WPML and Polylang are supported, but not tested well, so let me know if you will find any problems.
- Taxonomy filters are supported now. Some features may be missed, so feel free to report them.
- Ordering option added. It is also possible to order by meta_key/meta_value/meta_value_num.
Brief usage examples
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=query
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=query&per_page=5
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=query&per_page=5&page=2
Define post type:
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=query&per_page=5&page=2&type=post
Filter by taxonomy/taxonomies:
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=test&tax_query[0][taxonomy]=category&tax_query[0][field]=id&tax_query[0][terms]=3
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=test&tax_query[relation]=AND&tax_query[0][taxonomy]=category&tax_query[0][field]=id&tax_query[0][terms]=3&tax_query[1][taxonomy]=category&tax_query[1][field]=id&tax_query[1][terms]=2
Exclude category via taxonomies:
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=test&tax_query[0][taxonomy]=category&tax_query[0][field]=id&tax_query[0][terms]=3&tax_query[0][operator]=NOT IN
For multilingual websites (WPML & Polylang):
-
https://[your domain]/wp-json/relevanssi/v1/search?keyword=query&lng=en
- Results in order:
-
https://[your domain]/wp-json/relevanssi/v1/search?keyword=test&type=post&orderby=modified&order=DESC
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=test&type=post&orderby=modified&order=ASC
- https://[your domain]/wp-json/relevanssi/v1/search?keyword=test&type=post&meta_key=some_key&orderby=meta_value|meta_value_num&order=ASC
Demo website
You can try the plugin on our demo website http://demo.erlycoder.com/demo1/. For example, you can try the following request:
Basic:
http://demo.erlycoder.com/demo1/wp-json/relevanssi/v1/search?keyword=test
Order posts by modification time:
http://demo.erlycoder.com/demo1/wp-json/relevanssi/v1/search?keyword=test&type=post&orderby=modified&order=DESC
http://demo.erlycoder.com/demo1/wp-json/relevanssi/v1/search?keyword=test&type=post&orderby=modified&order=ASC
Filter posts by taxonomy (one single category):
http://demo.erlycoder.com/demo1/wp-json/relevanssi/v1/search?keyword=test&tax_query[0][taxonomy]=category&tax_query[0][field]=id&tax_query[0][terms]=3
Filter posts by taxonomy (exclude category):
[http://demo.erlycoder.com/demo1/wp-json/relevanssi/v1/search?keyword=test&tax_query[0][taxonomy]=category&tax_query[0][field]=id&tax_query[0][terms]=3&tax_query[0][operator]=NOT IN](http://demo.erlycoder.com/demo1/wp-json/relevanssi/v1/search?keyword=test&tax_query[0][taxonomy]=category&tax_query[0][field]=id&tax_query[0][terms]=3&tax_query[0][operator]=NOT IN)
Installation
- Ensure that Relevanssi plugin is installed
- Sign in to the admin area of your WordPress website.
- Go to the “Plugins” section.
- Click “Add new” and search for “REST API for Relevanssi”.
- Install the plugin.
Alternative way #1
- Ensure that Relevanssi plugin is installed
- Download REST API for Relevanssi plugin from the WordPress plugin diretcory.
- Go to Plugins > Add New > Upload and select the ZIP file you just downloaded. Click Install Now, and then Activate.
- Activate the plugin through the ‘Plugins’ screen in WordPress
- Plugin does not require any further configuration
Alternative way #2
- Ensure that Relevanssi plugin is installed
- Download REST API for Relevanssi plugin from the WordPress plugin diretcory.
- Upload the plugin files to the
/wp-content/plugins/rest-api-for-relevanssidirectory, or install the plugin through the WordPress plugins screen directly. - Activate the plugin through the ‘Plugins’ screen in WordPress
- Plugin does not require any further configuration
Frequently asked questions
Knowledge base
You can find answers and solutions in our Knowledge base.
Can I suggest a feature or report a bug?
Yes, you can submit your request on our Contact page.
Changelog
1.18
- Advanced Custom Fields plugin support is improved
1.17
- Taxonomy index bug fix.
1.16
- “No content found” error is changed to an empty result. This seems to be the proper response. Feel free to complain via Contact page, if you do not agree.
- Error messages are updated for cases where the search keyword is not provided or the target language does not exist (for Polylang).
- WP compatibility update
1.15
- Error messages fix.
1.14
- Minor fix in handling post types.
- WPML & Polylang compatibility fixes.
1.12
- Minor fix in handling post types.
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best REST API for Relevanssi alternatives
All api plugins →
FAQ
REST API for Relevanssi: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 4, 2026
Is REST API for Relevanssi free?
Yes. REST API for Relevanssi is free to download and use from the official WordPress.org plugin directory.
Is REST API for Relevanssi safe to use in 2026?
REST API for Relevanssi shows warning signs in 2026 — compare the alternatives below before installing. It runs on 200+ sites, is rated 5/5 and was last updated 3 years ago, and scores 33/100 on our health check.
How many websites use REST API for Relevanssi?
REST API for Relevanssi is active on 200+ WordPress websites and has been downloaded 7,450 times since it launched in September 2018. It was downloaded 144 times in the last 30 days.
Does REST API for Relevanssi work with WordPress 7.1?
REST API for Relevanssi is officially tested up to WordPress 6.2.13, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does REST API for Relevanssi need?
REST API for Relevanssi requires PHP 5.6 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was REST API for Relevanssi last updated?
The latest version, 1.18, was released on May 14, 2023 (3 years ago).
Who makes REST API for Relevanssi?
REST API for Relevanssi is developed and maintained by Sergiy Dzysyak.
What are the best alternatives to REST API for Relevanssi?
The most popular alternatives to REST API for Relevanssi are WP Consent API (200K+ installs), Disable REST API (80K+ installs) and Mailgun for WordPress (80K+ installs).
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