Free Demo REST API for Testing

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Base URL

https://freetoolza.com/wp-json/demo/v1

Resources

Resource	Items	Fields
/posts	100	userId, id, title, body
/comments	500	postId, id, name, email, body
/albums	100	userId, id, title
/photos	5000	albumId, id, title, url, thumbnailUrl
/todos	200	userId, id, title, completed
/users	10	id, name, username, email, address, phone, website, company

Routes

Method	Route	Result
GET	/posts	List all posts
GET	/posts/1	One post
GET	/posts/1/comments	Comments of post 1
GET	/albums/1/photos	Photos of album 1
GET	/users/1/posts, /users/1/albums, /users/1/todos	Items belonging to user 1
POST	/posts	Fake create, returns 201 with id 101
PUT, PATCH	/posts/1	Fake update, returns the changed item
DELETE	/posts/1	Fake delete, returns {}

Write requests return a realistic response but nothing is saved, so the next GET shows the original data.

Filtering, sorting and paging

Query	Meaning
?userId=1, ?postId=1, ?completed=true	Filter by any simple field
?_limit=10&_page=2	Paging. Total count is in the X-Total-Count header
?_start=20&_end=30	Slice by position
?_sort=title&_order=desc	Sort by a field

Examples

JavaScript

fetch("https://freetoolza.com/wp-json/demo/v1/posts/1")
  .then((res) => res.json())
  .then((post) => console.log(post));

Create a post (fake)

fetch("https://freetoolza.com/wp-json/demo/v1/posts", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ title: "foo", body: "bar", userId: 1 })
}).then((res) => res.json()).then(console.log);

cURL

curl "https://freetoolza.com/wp-json/demo/v1/users/1/todos?completed=true"

Swift

let url = URL(string: "https://freetoolza.com/wp-json/demo/v1/posts?_limit=5")!
let (data, _) = try await URLSession.shared.data(from: url)

FAQ

Do I need an API key?

No. This API is open. CORS is enabled, so browsers and web views can call it directly.

Is the data real?

No. All text, names and emails are generated samples and use example domains. Photos are placeholder images.

Will my POST be saved?

No. The API only simulates writes, so every user sees the same stable data.

Can I use it in production?

No. It is meant for learning, demos and testing, with no uptime guarantee.