These are some examples. For more info, check the API documentation.
curl -d '{"use_voice": true, "captcha": "'${CAPTCHA}'"}' http://localhost:8080/v1/register/${account}
curl -X POST http://localhost:8080/v1/register/${account}/verify/${token}
curl -d '{"message": "foo"}' http://localhost:8080/v1/send/${phonenumber}
curl -d '{"recipients": ["'${phonenumber}'"], "message": "foo", "number": "'${account}'"}' http://localhost:8080/v2/send
Attachments needs to be bas64 encoded (e.g. base64 -w 0 < file).
curl -d '{"message": "bar with image", "base64_attachments": ["base64-encoded-string"]}' http://localhost:8080/v1/send/${phonenumber}
curl -d '{"recipients": ["'${phonenumber}'"], "message": "bar with image", "number": "'${account}'", "base64_attachments": ["base64-encoded-string"]}' http://localhost:8080/v2/send
You can find the group id in signal-cli data directory (~/.local/share/signal-cli/data/<account-id>)
As the group id might contain slashes, which will break the request, you need to replace / (slash) with - (dash) for v1
curl -d '{"message": "foobar to all"}' http://localhost:8080/v1/send/${groupid.replace("/", "-")]
curl -d '{"recipients": ["'${groupid}'"], "message": "foobar to all", "number": "'${account}'"}' http://localhost:8080/v2/send