diff --git a/api/index.php b/api/index.php
new file mode 100644
index 0000000..86dc528
--- /dev/null
+++ b/api/index.php
@@ -0,0 +1,151 @@
+<?php
+
+ob_start();
+header('Content-Type: application/json');
+
+require_once __DIR__ . "/../required.php";
+require_once __DIR__ . "/../machine.php";
+
+$VARS;
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $VARS = $_POST;
+} else {
+    $VARS = $_GET;
+}
+
+if (!$database->has('apikeys', ['key' => $VARS['key']])) {
+    http_response_code(403);
+    die('{"status": "ERROR", "message": "Invalid API key.  Access denied."}');
+}
+
+function sendError($type, $msg = "An error occurred.") {
+    $code = 404;
+    switch ($type) {
+        case "nomachineid":
+            $code = 400;
+            $msg = "No machine ID sent.";
+            break;
+        case "dberror":
+            $code = 500;
+            $msg = "The database encountered an error: $msg";
+    }
+    http_response_code($code);
+    die(json_encode([
+        "status" => "ERROR",
+        "message" => $msg
+    ]));
+}
+
+switch ($VARS['action']) {
+    /* Get info */
+    case "getmachineinfo":
+        if (empty($VARS['id'])) {
+            sendError("nomachineid");
+        }
+
+        try {
+            $machine = new Machine($VARS['id']);
+            echo json_encode($machine->getMachineInfo());
+        } catch (Exception $e) {
+            sendError("", $e->getMessage());
+        }
+        break;
+    case "getmachinehistory":
+        if (empty($VARS['id'])) {
+            sendError("nomachineid");
+        }
+
+        try {
+            $machine = new Machine($VARS['id']);
+            echo json_encode($machine->getHistory());
+        } catch (Exception $e) {
+            sendError("", $e->getMessage());
+        }
+        break;
+    case "getmachinecomponents":
+        if (empty($VARS['id'])) {
+            sendError("nomachineid");
+        }
+
+        try {
+            $machine = new Machine($VARS['id']);
+            echo json_encode($machine->getComponents());
+        } catch (Exception $e) {
+            sendError("", $e->getMessage());
+        }
+        break;
+    case "geteventtypes":
+        echo json_encode($database->select('event_types', ['eventid (id)', 'eventname (name)']));
+        break;
+    case "getcomponenttypes":
+        echo json_encode($database->select('component_types', ['typeid (id)', 'typename (name)']));
+        break;
+
+
+    /* Save info */
+    case "addmachine":
+        if (empty($VARS['id'])) {
+            sendError("nomachineid");
+        }
+        if ($database->has('machines', ['machineid' => $VARS['id']])) {
+            sendError("", "A machine with that ID already exists.");
+        }
+        $data = [];
+        $data['machineid'] = $VARS['id'];
+        if (empty($VARS['notes'])) {
+            $data['notes'] = "";
+        } else {
+            $data['notes'] = $VARS['notes'];
+        }
+        if (!empty($VARS['model'])) {
+            $data['model'] = $VARS['model'];
+        }
+        if (!empty($VARS['condition'])) {
+            if (is_numeric($VARS['condition']) && $VARS['condition'] > 0 && $VARS['condition'] < 10) {
+                $data['condition'] = $VARS['condition'] * 1.0;
+            } else {
+                sendError("", "Machine condition must be a number and 0 < condition < 10.");
+            }
+        }
+        if (!empty($VARS['price'])) {
+            if (is_numeric($VARS['price']) && $VARS['price'] > 0 && $VARS['price'] < 10000.0) {
+                $data['price'] = $VARS['price'] * 1.0;
+            } else {
+                sendError("", "Machine price must be a number and 0 < price < 10000.");
+            }
+        }
+
+        $database->insert('machines', $data);
+        if ($database->error()[1] != 0) {
+            sendError("dberror", $database->error()[2]);
+        }
+        exit(json_encode(["status" => "OK"]));
+        break;
+    case "addhistory":
+        if (empty($VARS['id'])) {
+            sendError("nomachineid");
+        }
+        try {
+            $machine = new Machine($VARS['id']);
+            $machine->addHistory($VARS['date'], $VARS['event'], $VARS['notes']);
+            exit(json_encode(["status" => "OK"]));
+        } catch (Exception $e) {
+            sendError("", $e->getMessage());
+        }
+        break;
+    case "addcomponent":
+        if (empty($VARS['id'])) {
+            sendError("nomachineid");
+        }
+        try {
+            $machine = new Machine($VARS['id']);
+            $machine->addComponent($VARS['serial'], $VARS['type'], $VARS['tested'], $VARS['notes'], $VARS['capacity'], $VARS['model']);
+            exit(json_encode(["status" => "OK"]));
+        } catch (Exception $e) {
+            sendError("", $e->getMessage());
+        }
+        break;
+
+    default:
+        sendError("", "Invalid action or no action sent.");
+}
\ No newline at end of file
diff --git a/database.mwb b/database.mwb
index 8801ccf..faa20ce 100644
Binary files a/database.mwb and b/database.mwb differ
diff --git a/machine.php b/machine.php
index 4db1bc9..a2a6204 100644
--- a/machine.php
+++ b/machine.php
@@ -59,4 +59,50 @@ class Machine {
         }
         return $info;
     }
+
+    public function addHistory($date, $event, $notes = "") {
+        global $database;
+        if (strtotime($date) === false) {
+            throw new Exception("Invalid date.");
+        }
+        $date = date("Y-m-d H:i:s", strtotime($date));
+        if (!$database->has('event_types', ['eventid' => $event])) {
+            throw new Exception("Invalid event type.");
+        }
+        $event = (int) $event;
+        if (empty($notes)) {
+            $notes = "";
+        }
+        $database->insert('history', ['date' => $date, 'eventid' => $event, 'notes' => $notes, 'machineid' => $this->machineid]);
+    }
+
+    public function addComponent($serial, $type, $tested = null, $notes = "", $capacity = null, $model = null) {
+        global $database;
+        if (empty($serial)) {
+            throw new Exception("Invalid serial number.");
+        }
+        if (!$database->has('component_types', ['typeid' => $type])) {
+            throw new Exception("Invalid component type.");
+        }
+        $type = (int) $type;
+
+        if (!is_null($tested)) {
+            if (strtotime($tested) === false) {
+            throw new Exception("Invalid tested date.");
+            }
+            $tested = date("Y-m-d H:i:s", strtotime($tested));
+        }
+
+        if (empty($notes)) {
+            $notes = "";
+        }
+        if (empty($capacity)) {
+            $capacity = null;
+        }
+        if (empty($model)) {
+            $model = null;
+        }
+
+        $database->insert('components', ['serial' => $serial, 'typeid' => $type, 'tested' => $tested, 'notes' => $notes, 'capacity' => $capacity, 'model' => $model, 'machineid' => $this->machineid]);
+    }
 }