diff --git a/lib/http/server.js b/lib/http/server.js
index e2950df4..446a1406 100644
--- a/lib/http/server.js
+++ b/lib/http/server.js
@@ -656,25 +656,34 @@ HTTPServer.prototype._init = function _init() {
 
   // UTXO by address
   this.get('/coin/address/:address', co(function* (req, res) {
-    var coins;
+    var address = req.options.address;
+    var result = [];
+    var i, coins, coin;
 
     enforce(req.options.address, 'Address is required.');
+    enforce(!this.chain.options.spv, 'Cannot get coins in SPV mode.');
 
-    coins = yield this.node.getCoinsByAddress(req.options.address);
+    coins = yield this.node.getCoinsByAddress(address);
 
-    res.send(200, coins.map(function(coin) {
-      return coin.getJSON(this.network);
-    }, this));
+    for (i = 0; i < coins.length; i++) {
+      coin = coins[i];
+      result.push(coin.getJSON(this.network));
+    }
+
+    res.send(200, result);
   }));
 
   // UTXO by id
   this.get('/coin/:hash/:index', co(function* (req, res) {
+    var hash = req.options.hash;
+    var index = req.options.index;
     var coin;
 
     enforce(req.options.hash, 'Hash is required.');
     enforce(req.options.index != null, 'Index is required.');
+    enforce(!this.chain.options.spv, 'Cannot get coins in SPV mode.');
 
-    coin = yield this.node.getCoin(req.options.hash, req.options.index);
+    coin = yield this.node.getCoin(hash, index);
 
     if (!coin) {
       res.send(404);
@@ -686,57 +695,81 @@ HTTPServer.prototype._init = function _init() {
 
   // Bulk read UTXOs
   this.post('/coin/address', co(function* (req, res) {
-    var coins;
+    var address = req.options.address;
+    var result = [];
+    var i, coins, coin;
 
     enforce(req.options.address, 'Address is required.');
+    enforce(!this.chain.options.spv, 'Cannot get coins in SPV mode.');
 
-    coins = yield this.node.getCoinsByAddress(req.options.address);
+    coins = yield this.node.getCoinsByAddress(address);
 
-    res.send(200, coins.map(function(coin) {
-      return coin.getJSON(this.network);
-    }, this));
+    for (i = 0; i < coins.length; i++) {
+      coin = coins[i];
+      result.push(coin.getJSON(this.network));
+    }
+
+    res.send(200, result);
   }));
 
   // TX by hash
   this.get('/tx/:hash', co(function* (req, res) {
-    var tx;
+    var hash = req.options.hash;
+    var meta, view;
 
     enforce(req.options.hash, 'Hash is required.');
+    enforce(!this.chain.options.spv, 'Cannot get TX in SPV mode.');
 
-    tx = yield this.node.getMeta(req.options.hash);
+    meta = yield this.node.getMeta(hash);
 
-    if (!tx) {
+    if (!meta) {
       res.send(404);
       return;
     }
 
-    res.send(200, tx.getJSON(this.network));
+    view = yield this.node.getMetaView(meta);
+
+    res.send(200, meta.getJSON(this.network, view));
   }));
 
   // TX by address
   this.get('/tx/address/:address', co(function* (req, res) {
-    var txs;
+    var address = req.options.address;
+    var result = [];
+    var i, metas, meta, view;
 
     enforce(req.options.address, 'Address is required.');
+    enforce(!this.chain.options.spv, 'Cannot get TX in SPV mode.');
 
-    txs = yield this.node.getMetaByAddress(req.options.address);
+    metas = yield this.node.getMetaByAddress(address);
 
-    res.send(200, txs.map(function(tx) {
-      return tx.getJSON(this.network);
-    }, this));
+    for (i = 0; i < metas.length; i++) {
+      meta = metas[i];
+      view = yield this.node.getMetaView(meta);
+      result.push(meta.getJSON(this.network, view));
+    }
+
+    res.send(200, result);
   }));
 
   // Bulk read TXs
   this.post('/tx/address', co(function* (req, res) {
-    var txs;
+    var address = req.options.address;
+    var result = [];
+    var i, metas, meta, view;
 
     enforce(req.options.address, 'Address is required.');
+    enforce(!this.chain.options.spv, 'Cannot get TX in SPV mode.');
 
-    txs = yield this.node.getMetaByAddress(req.options.address);
+    metas = yield this.node.getMetaByAddress(address);
 
-    res.send(200, txs.map(function(tx) {
-      return tx.getJSON(this.network);
-    }, this));
+    for (i = 0; i < metas.length; i++) {
+      meta = metas[i];
+      view = yield this.node.getMetaView(meta);
+      result.push(meta.getJSON(this.network, view));
+    }
+
+    res.send(200, result);
   }));
 
   // Block by hash/height
@@ -745,6 +778,7 @@ HTTPServer.prototype._init = function _init() {
     var block, view, height;
 
     enforce(hash != null, 'Hash or height required.');
+    enforce(!this.chain.options.spv, 'Cannot get block in SPV mode.');
 
     block = yield this.chain.db.getBlock(hash);
 
@@ -767,18 +801,19 @@ HTTPServer.prototype._init = function _init() {
 
   // Mempool snapshot
   this.get('/mempool', co(function* (req, res) {
-    var txs;
+    var result = [];
+    var i, hash, hashes;
 
-    if (!this.mempool) {
-      res.send(500, { error: 'No mempool available.' });
-      return;
+    enforce(this.mempool, 'No mempool available.');
+
+    hashes = this.mempool.getSnapshot();
+
+    for (i = 0; i < hashes.length; i++) {
+      hash = hashes[i];
+      result.push(util.revHex(hash));
     }
 
-    txs = this.mempool.getHistory();
-
-    res.send(200, txs.map(function(tx) {
-      return tx.getJSON(this.network);
-    }, this));
+    res.send(200, result);
   }));
 
   // Broadcast TX
@@ -1138,20 +1173,31 @@ HTTPServer.prototype._init = function _init() {
     var options = req.options;
     var acct = options.name || options.account;
     var coins = yield req.wallet.getCoins(acct);
+    var result = [];
+    var i, coin;
 
     sortCoins(coins);
 
-    res.send(200, coins.map(function(coin) {
-      return coin.getJSON(this.network);
-    }, this));
+    for (i = 0; i < coins.length; i++) {
+      coin = coins[i];
+      result.push(coin.getJSON(this.network));
+    }
+
+    res.send(200, result);
   }));
 
   // Locked coins
   this.get('/wallet/:id/coin/locked', co(function* (req, res) {
     var locked = this.wallet.getLocked();
-    res.send(200, locked.map(function(outpoint) {
-      return outpoint.toJSON();
-    }));
+    var result = [];
+    var i, outpoint;
+
+    for (i = 0; i < locked.length; i++) {
+      outpoint = locked[i];
+      result.push(outpoint.toJSON());
+    }
+
+    res.send(200, result);
   }));
 
   // Lock coin
@@ -1204,15 +1250,19 @@ HTTPServer.prototype._init = function _init() {
     var options = req.options;
     var acct = options.name || options.account;
     var txs = yield req.wallet.getHistory(acct);
-    var details;
+    var result = [];
+    var i, details, item;
 
     sortTX(txs);
 
     details = yield req.wallet.toDetails(txs);
 
-    res.send(200, details.map(function(tx) {
-      return tx.toJSON();
-    }));
+    for (i = 0; i < details.length; i++) {
+      item = details[i];
+      result.push(item.toJSON());
+    }
+
+    res.send(200, result);
   }));
 
   // Wallet Pending TXs
@@ -1220,15 +1270,19 @@ HTTPServer.prototype._init = function _init() {
     var options = req.options;
     var acct = options.name || options.account;
     var txs = yield req.wallet.getPending(acct);
-    var details;
+    var result = [];
+    var i, details, item;
 
     sortTX(txs);
 
     details = yield req.wallet.toDetails(txs);
 
-    res.send(200, details.map(function(tx) {
-      return tx.toJSON();
-    }));
+    for (i = 0; i < details.length; i++) {
+      item = details[i];
+      result.push(item.toJSON());
+    }
+
+    res.send(200, result);
   }));
 
   // Wallet TXs within time range
@@ -1237,9 +1291,15 @@ HTTPServer.prototype._init = function _init() {
     var acct = options.name || options.account;
     var txs = yield req.wallet.getRange(acct, options);
     var details = yield req.wallet.toDetails(txs);
-    res.send(200, details.map(function(tx) {
-      return tx.toJSON();
-    }));
+    var result = [];
+    var i, item;
+
+    for (i = 0; i < details.length; i++) {
+      item = details[i];
+      result.push(item.toJSON());
+    }
+
+    res.send(200, result);
   }));
 
   // Last Wallet TXs
@@ -1249,9 +1309,15 @@ HTTPServer.prototype._init = function _init() {
     var limit = options.limit;
     var txs = yield req.wallet.getLast(acct, limit);
     var details = yield req.wallet.toDetails(txs);
-    res.send(200, details.map(function(tx) {
-      return tx.toJSON();
-    }));
+    var result = [];
+    var i, item;
+
+    for (i = 0; i < details.length; i++) {
+      item = details[i];
+      result.push(item.toJSON());
+    }
+
+    res.send(200, result);
   }));
 
   // Wallet TX
@@ -1584,11 +1650,16 @@ HTTPServer.prototype._initIO = function _initIO() {
   });
 
   this.walletdb.on('address', function(id, receive) {
-    receive = receive.map(function(address) {
-      return address.toJSON();
-    });
-    self.server.io.to(id).emit('wallet address', receive);
-    self.server.io.to('!all').emit('wallet address', id, receive);
+    var json = [];
+    var i, address;
+
+    for (i = 0; i < receive.length; i++) {
+      address = receive[i];
+      json.push(address.toJSON());
+    }
+
+    self.server.io.to(id).emit('wallet address', json);
+    self.server.io.to('!all').emit('wallet address', id, json);
   });
 };