Get started in 1 minute

1. Download saml-md-aggregator-standalone.jar
2. Move to a directory where you have a bunch of metadata each EntityDescriptor in a separate file

   # cd /path/to/metadata
   # ls
   idp.example.org.xml sp.example.org.xml
   

3. Use keytool to generate a keystore with a signing key in it - eg

   keytool -genkeypair -alias mdx -keypass secret123 -keystore mdx.jks
   ... answer a bunch of questions ...
   

4. Run the aggregator

   java -Dmdx.store.url=/path/to/metadata \
        -Dmdx.signer.alias=mdx \
        -Dmdx.signer.pin=secret123 \
        -Dmdx.signer.validity=3600 -jar saml-md-aggregator-standalone.jar &
   

   This will setup an aggregator that signs each request with the generated key pair and sets the validUntil element on the EntityDescriptor elemets to 1 hour from the time of signing.
5. Point your browser at http://localhost:8080/md/all and look a your stuff
6. Get all of your idp:s as an EntitiesDescriptor document

   # wget -qO- http://localhost:8080/entity/all+idp
   

7. Get all of your sp:s as an EntitiesDescriptor document

   # wget -qO- http://localhost:8080/entity/all+sp