What’s Hurl?

Hurl is a command line tool that runs HTTP requests defined in a simple plain text format.

It can chain requests, capture values and evaluate queries on headers and body response. Hurl is very versatile: it can be used for fetching data, testing HTTP sessions and testing XML / JSON APIs.

# Get home:
GET https://example.org

HTTP/1.1 200
[Captures]
csrf_token: xpath "string(//meta[@name='_csrf_token']/@content)"

# Do login!
POST https://example.org/login?user=toto&password=1234
X-CSRF-TOKEN: {{csrf_token}}

HTTP/1.1 302

Chaining multiple requests is easy:

GET https://example.org/api/health
GET https://example.org/api/step1
GET https://example.org/api/step2
GET https://example.org/api/step3

Also an HTTP Test Tool

Hurl can run HTTP requests but can also be used to test HTTP responses. Different types of queries and predicates are supported, from XPath and JSONPath on body response, to assert on status code and response headers.

It is well adapted for REST / JSON APIs

POST https://example.org/api/tests
{
    "id": "4568",
    "evaluate": true
}

HTTP/1.1 200
[Asserts]
header "X-Frame-Options" == "SAMEORIGIN"
jsonpath "$.status" == "RUNNING"    # Check the status code
jsonpath "$.tests" count == 25      # Check the number of items
jsonpath "$.id" matches /\d{4}/     # Check the format of the id

HTML content

GET https://example.org

HTTP/1.1 200
[Asserts]
xpath "normalize-space(//head/title)" == "Hello world!"

and even SOAP APIs

POST https://example.org/InStock
Content-Type: application/soap+xml; charset=utf-8
SOAPAction: "http://www.w3.org/2003/05/soap-envelope"
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:m="https://example.org">
  <soap:Header></soap:Header>
  <soap:Body>
    <m:GetStockPrice>
      <m:StockName>GOOG</m:StockName>
    </m:GetStockPrice>
  </soap:Body>
</soap:Envelope>

HTTP/1.1 200

Hurl can also be used to performance test HTTP endpoints:

GET https://example.org/api/v1/pets

HTTP/1.0 200
[Asserts]
duration < 1000  # Duration in ms

And response bytes

GET https://example.org/data.tar.gz

HTTP/1.0 200
[Asserts]
sha256 == hex,039058c6f2c0cb492c533b0a4d14ef77cc0f78abccced5287d84a1a2011cfb81;

Why Hurl?

  • Text Format

    For both devops and developers
  • Fast CLI

    A command line for local dev and continuous integration
  • Single Binary

    Easy to install, with no runtime required

Powered by curl

Hurl is a lightweight binary written in Rust. Under the hood, Hurl HTTP engine is powered by libcurl, one of the most powerful and reliable file transfer libraries. With its text file format, Hurl adds syntactic sugar to run and test HTTP requests, but it’s still the curl that we love.

Feedbacks

Feedback, suggestion, bugs or improvements are welcome!

POST https://hurl.dev/api/feedback
{
  "name": "John Doe",
  "feedback": "Hurl is awesome !"
}
HTTP/1.1 200

Resources

License

Blog

Tutorial

Documentation

GitHub