diff --git a/README.md b/README.md
index e464755..8becccb 100644
--- a/README.md
+++ b/README.md
@@ -60,8 +60,12 @@ LeCore.getAcmeUrls(
         // record to disk (or db)
 
         LeCore.getCertificate(
-          { domainPrivateKeyPem: domainPrivateKeyPem
+          { newAuthzUrl: urls.newAuthz
+          , newCertUrl: urls.newCert
+
+          , domainPrivateKeyPem: domainPrivateKeyPem
           , accountPrivateKeyPem: accountPrivateKeyPem
+
           , setChallenge: challengeStore.set
           , removeChallenge: challengeStore.remove
           }
diff --git a/example/letsencrypt.js b/example/letsencrypt.js
index 28f1adf..532f53f 100644
--- a/example/letsencrypt.js
+++ b/example/letsencrypt.js
@@ -63,9 +63,8 @@ function runDemo() {
         , accountPrivateKeyPem: accountPrivateKeyPem
         , agreeToTerms: function (tosUrl, done) {
 
-              // agree to these exact terms
-              console.log('[tosUrl]');
-              console.log(tosUrl);
+              // agree to the exact version of these terms
+              console.log('[tosUrl]:', tosUrl);
               done(null, tosUrl);
           }
         }
@@ -74,15 +73,19 @@ function runDemo() {
             // Note: you should save the registration
             // record to disk (or db)
             console.log('[regr]');
-            console.log(regr);
+            console.log(err || regr);
 
             console.log('Registering New Certificate');
             LeCore.getCertificate(
-                { domainPrivateKeyPem: domainPrivateKeyPem
+                { newAuthzUrl: acmeUrls.newAuthz
+                , newCertUrl: acmeUrls.newCert
+
+                , domainPrivateKeyPem: domainPrivateKeyPem
                 , accountPrivateKeyPem: accountPrivateKeyPem
+                , domains: domains
+
                 , setChallenge: challengeStore.set
                 , removeChallenge: challengeStore.remove
-                , domains: domains
                 }
               , function (err, certs) {
 
@@ -90,7 +93,7 @@ function runDemo() {
                   certStore.set(domains[0], certs, function () {
 
                     console.log('[certs]');
-                    console.log(certs);
+                    console.log(err || certs);
 
                   });
                   
diff --git a/lib/get-certificate.js b/lib/get-certificate.js
index f63cd81..235a9c5 100644
--- a/lib/get-certificate.js
+++ b/lib/get-certificate.js
@@ -19,10 +19,18 @@ module.exports.create = function (deps) {
     var state={
       validatedDomains:[]
     , validAuthorizationUrls:[]
-    , newAuthorizationUrl: options.newAuthorizationUrl || options.newAuthz
-    , newCertificateUrl: options.newCertificateUrl || options.newCert
+    , newAuthzUrl: options.newAuthzUrl
+    , newCertUrl: options.newCertUrl
     };
 
+    console.log('state');
+    console.log(state);
+    if (!options.newAuthzUrl) {
+      return handleErr(new Error("options.newAuthzUrl must be the authorization url"));
+    }
+    if (!options.newCertUrl) {
+      return handleErr(new Error("options.newCertUrl must be the new certificate url"));
+    }
     if (!options.accountPrivateKeyPem) {
       return handleErr(new Error("options.accountPrivateKeyPem must be an ascii private key pem"));
     }
@@ -64,7 +72,7 @@ module.exports.create = function (deps) {
     function getChallenges(domain) {
       state.domain=domain;
 
-      state.acme.post(state.newAuthorizationUrl, {
+      state.acme.post(state.newAuthzUrl, {
         resource:'new-authz',
         identifier:{
           type:'dns',
@@ -90,7 +98,7 @@ module.exports.create = function (deps) {
       }
 
       state.authorizationUrl=res.headers.location;
-      state.newCertificateUrl=links.next;
+      state.newCertUrl=links.next;
 
       authz=JSON.parse(body);
 
@@ -156,7 +164,7 @@ module.exports.create = function (deps) {
     function getCertificate() {
       var csr=generateCsr(state.certPrivateKey, state.validatedDomains);
       log('Requesting certificate...');
-      state.acme.post(state.newCertificateUrl, {
+      state.acme.post(state.newCertUrl, {
         resource:'new-cert',
         csr:csr,
         authorizations:state.validAuthorizationUrls
diff --git a/lib/register-new-account.js b/lib/register-new-account.js
index 4b5ff05..0c4ad69 100644
--- a/lib/register-new-account.js
+++ b/lib/register-new-account.js
@@ -22,8 +22,8 @@ module.exports.create = function (deps) {
       cb(new Error("options.agreeToTerms must be function (tosUrl, fn => (err, true))"));
       return;
     }
-    if (!options.newReg) {
-      cb(new Error("options.newReg must be the a new registration url"));
+    if (!options.newRegUrl) {
+      cb(new Error("options.newRegUrl must be the a new registration url"));
       return;
     }
     if (!options.email) {
@@ -38,7 +38,7 @@ module.exports.create = function (deps) {
     register();
 
     function register() {
-      state.acme.post(options.newReg, {
+      state.acme.post(options.newRegUrl, {
         resource:'new-reg',
         contact:['mailto:'+options.email]
       }, getTerms);
@@ -77,7 +77,7 @@ module.exports.create = function (deps) {
           request.get(state.termsUrl, getAgreement);
         });
       } else {
-        cb();
+        cb(null, null);
       }
     }
 
@@ -100,11 +100,30 @@ module.exports.create = function (deps) {
         resource:'reg',
         agreement:state.termsUrl
       }, function(err, res, body) {
+        var data;
+
         if (err || Math.floor(res.statusCode/100)!==2) {
           return handleErr(err, 'Couldn\'t POST agreement back to server', body);
-        } else {
-          cb(null, body);
         }
+
+        data = body;
+        // handle for node and browser
+        if ('string' === typeof body) {
+          try {
+            data = JSON.parse(body);
+          } catch(e) {
+            // ignore
+          }
+        } else {
+          // might be a buffer
+          data = body.toString('utf8');
+          if (!(data.length > 10)) {
+            // probably json
+            data = body;
+          }
+        }
+
+        cb(null, data);
       });
     }