Paste JSON and a JSONPath expression.

What this tool does

JSONPath Tester lets you run a JSONPath query against a payload and instantly see the matched result. That makes it easier to build filters, assertions, mappings, or automation rules without guessing at the correct path.

It is especially useful when a response contains large nested objects and you only need one value or a repeated set of values.

Common use cases

  • Testing selectors for API assertions.
  • Finding a nested field before writing extraction code.
  • Inspecting arrays with wildcard queries.
  • Verifying JSONPath expressions for automation tools.

Input and output example

JSON

{"users":[{"name":"Ada"},{"name":"Linus"}]}

Expression

$.users[0].name
"Ada"

How to use this tool

  1. Paste JSON into the input area.
  2. Enter a JSONPath expression such as $.items[0] or $.items[*].id.
  3. Click Run JSONPath.
  4. Copy the result or adjust the path until it points to the exact value you need.
Your JSON is processed in your browser and is not uploaded to our servers.

Common errors

  • The expression must begin with $.
  • Unsupported syntax will fail if it falls outside the common property, index, or wildcard patterns.
  • Invalid JSON stops the query before it can run.
  • A missing path returns an empty result rather than the expected value.

Related tools

FAQ

Does this support wildcard selection?

Yes. Common wildcard patterns like $.items[*] are supported.

Can I query arrays by index?

Yes. Use index syntax such as $.items[0].

Why is the result empty?

The path may not match anything in the JSON, or the syntax may not point to the correct branch.

Is this a full JSONPath implementation?

It focuses on the common JSONPath patterns developers use most often in debugging and extraction workflows.