netcat for AMQP. CLI tool to publish to and consume from AMQP servers.


Using snap:

snap install amqpcat

Using Homebrew in OS X:

brew install cloudamqp/amqpcat

Using Docker/Podman:

docker run -it cloudamqp/amqpcat

From source:

brew install crystal # os x
snap install crystal # linux/ubuntu

git clone
cd amqpcat
shards build --release --production

There are more Crystal installation alternatives.


Usage: amqpcat [arguments]
    -P, --producer                   Producer mode, reading from STDIN, each line is a new message
    -C, --consumer                   Consume mode, message bodies are written to STDOUT
    -u URI, --uri=URI                URI to AMQP server
    -e EXCHANGE, --exchange=EXCHANGE Exchange
    -r ROUTINGKEY, --routing-key=KEY Routing key when publishing
    -q QUEUE, --queue=QUEUE          Queue to consume from
    -f FORMAT, --format=FORMAT       Format string (default "%s\n")
				     %e: Exchange name
				     %r: Routing key
				     %s: Body, as string
				     \n: Newline
				     \t: Tab
    -v, --version                    Display version
    -h, --help                       Show this help message


Send messages to a queue named test:

echo Hello World | amqpcat --producer --uri=$CLOUDAMQP_URL --queue test

Consume from the queue named test:

amqpcat --consumer --uri=$CLOUDAMQP_URL --queue test

With a temporary queue, consume messages sent to the exchange amq.topic with the routing key '':

amqpcat --consumer --uri=$CLOUDAMQP_URL --exchange amq.topic --routing-key

Consume from the queue named test, format the output as CSV and pipe to file:

amqpcat --consumer --uri=$CLOUDAMQP_URL --queue test --format "%e,%r,"%s"\n | tee messages.csv

Publish messages from syslog to the exchange 'syslog' topic with the hostname as routing key

tail -f /var/log/syslog | amqpcat --producer --uri=$CLOUDAMQP_URL --exchange syslog --routing-key $HOSTNAME

Consume, parse and extract data from json messages:

amqpcat --consumer --queue json | jq .property


amqpcat is built with Crystal


  1. Fork it (
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request