Command-line Interface


$ dredd '<api-description-document>' '<api-location>' [OPTIONS]


$ dredd ./



URL or path to the API description document (API Blueprint, OpenAPI 2). Sample values: ./api-blueprint.apib, ./openapi2.yml, ./openapi2.json,


URL, the root address of your API. Sample values:,

Configuration File

If you use Dredd repeatedly within a single project, the preferred way to run it is to first persist your configuration in a dredd.yml file. With the file in place you can then run Dredd every time simply just by:

$ dredd

Dredd offers interactive wizard to setup your dredd.yml file:

$ dredd init

See below how sample configuration file could look like. The structure is the same as of the Dredd Class configuration object.

reporter: apiary
  - "apiaryApiKey:yourSecretApiaryAPiKey"
  - "apiaryApiName:apiName"
dry-run: null
hookfiles: "dreddhooks.js"
server: rails server
server-wait: 3
init: false
names: false
only: []
output: []
header: []
sorted: false
user: null
inline-errors: false
details: false
method: []
loglevel: warning
path: []
blueprint: api-description.apib
endpoint: ""


Do not get confused by Dredd using a keyword blueprint also for paths to OpenAPI 2 documents. This is for historical reasons and will be changed in the future.

CLI Options Reference

Remember you can always list all available arguments by dredd --help.


Use –color/–no-color to enable/disable colored output Default value: true


Path to dredd.yml config file. Default value: "./dredd.yml"

--custom, -j

Pass custom key-value configuration data delimited by a colon. E.g. -j ‘a:b’ Default value: []

--details, -d

Determines whether request/response details are included in passing tests. Default value: false

--dry-run, -y

Do not run any real HTTP transaction, only parse API description document and compile transactions. Default value: null

--header, -h

Extra header to include in every request. This option can be used multiple times to add multiple headers. Default value: []


Show usage information.

--hookfiles, -f

Path to hook files. Can be used multiple times, supports glob patterns. Hook files are executed in alphabetical order. Default value: null


How long to wait between connecting to hooks worker and start of testing. [ms] Default value: 100


How long to wait between attempts to connect to hooks worker. [ms] Default value: 500


Total hook worker connection timeout (includes all retries). [ms] Default value: 1500


Host of the hook worker. Default value: ""


Port of the hook worker. Default value: 61321


How long to wait between attempts to terminate hooks worker. [ms] Default value: 500


How long to wait between trying to terminate hooks worker and killing it. [ms] Default value: 5000


How long to wait for hooks worker to start. [ms] Default value: 5000

--init, -i

Run interactive configuration. Creates dredd.yml configuration file. Default value: false

--inline-errors, -e

Determines whether failures and errors are displayed as they occur (true) or aggregated and displayed at the end (false). Default value: false

--language, -a

Language of hookfiles. Possible options are: nodejs, ruby, python, php, perl, go, rust Default value: "nodejs"

--loglevel, -l

Application logging level. Supported levels: ‘debug’, ‘warning’, ‘error’, ‘silent’. The value ‘debug’ also displays timestamps. Default value: "warning"

--method, -m

Restrict tests to a particular HTTP method (GET, PUT, POST, DELETE, PATCH). This option can be used multiple times to allow multiple methods. Default value: []

--names, -n

Only list names of requests (for use in a hookfile). No requests are made. Default value: false

--only, -x

Run only specified transaction name. Can be used multiple times Default value: []

--output, -o

Specifies output file when using additional file-based reporter. This option can be used multiple times if multiple file-based reporters are used. Default value: []

--path, -p

Additional API description paths or URLs. Can be used multiple times with glob pattern for paths. Default value: []

--reporter, -r

Output additional report format. This option can be used multiple times to add multiple reporters. Options: xunit, nyan, dot, markdown, html, apiary. Default value: []


When using nodejs hooks, require the given module before executing hooks Default value: null

--server, -g

Run API backend server command and kill it after Dredd execution. E.g. rails server Default value: null


Set delay time in seconds between running a server and test run. Default value: 3

--sorted, -s

Sorts requests in a sensible way so that objects are not modified before they are created. Order: CONNECT, OPTIONS, POST, GET, HEAD, PUT, PATCH, DELETE, TRACE. Default value: false

--user, -u

Basic Auth credentials in the form username:password. Default value: null


Show version number.