diff --git a/mitmproxy/optmanager.py b/mitmproxy/optmanager.py
index 1680d3468..68c2f9753 100644
--- a/mitmproxy/optmanager.py
+++ b/mitmproxy/optmanager.py
@@ -401,21 +401,36 @@ def dump_defaults(opts):
         if o.choices:
             txt += " Valid values are %s." % ", ".join(repr(c) for c in o.choices)
         else:
-            if o.typespec in (str, int, bool):
-                t = o.typespec.__name__
-            elif o.typespec == typing.Optional[str]:
-                t = "optional str"
-            elif o.typespec == typing.Sequence[str]:
-                t = "sequence of str"
-            else:  # pragma: no cover
-                raise NotImplementedError
+            t = typecheck.typespec_to_str(o.typespec)
             txt += " Type %s." % t
 
         txt = "\n".join(textwrap.wrap(txt))
-        s.yaml_set_comment_before_after_key(k, before = "\n" + txt)
+        s.yaml_set_comment_before_after_key(k, before="\n" + txt)
     return ruamel.yaml.round_trip_dump(s)
 
 
+def dump_dicts(opts):
+    """
+        Dumps the options into a list of dict object.
+
+        Return: A list like: [ { name: "anticache", type: "bool", default: false, value: true, help: "help text"} ]
+    """
+    options_list = []
+    for k in sorted(opts.keys()):
+        o = opts._options[k]
+        t = typecheck.typespec_to_str(o.typespec)
+        option = {
+            'name': k,
+            'type': t,
+            'default': o.default,
+            'value': o.current(),
+            'help': o.help,
+            'choices': o.choices
+        }
+        options_list.append(option)
+    return options_list
+
+
 def parse(text):
     if not text:
         return {}
diff --git a/mitmproxy/tools/web/app.py b/mitmproxy/tools/web/app.py
index c55c0cb5b..8b4a39b6f 100644
--- a/mitmproxy/tools/web/app.py
+++ b/mitmproxy/tools/web/app.py
@@ -17,6 +17,7 @@ from mitmproxy import http
 from mitmproxy import io
 from mitmproxy import log
 from mitmproxy import version
+from mitmproxy import optmanager
 import mitmproxy.tools.web.master # noqa
 
 
@@ -438,6 +439,18 @@ class Settings(RequestHandler):
         self.master.options.update(**update)
 
 
+class Options(RequestHandler):
+    def get(self):
+        self.write(optmanager.dump_dicts(self.master.options))
+
+    def put(self):
+        update = self.json
+        try:
+            self.master.options.update(**update)
+        except (KeyError, TypeError) as err:
+            raise APIError(400, "{}".format(err))
+
+
 class Application(tornado.web.Application):
     def __init__(self, master, debug):
         self.master = master
@@ -462,6 +475,7 @@ class Application(tornado.web.Application):
                 FlowContentView),
             (r"/settings", Settings),
             (r"/clear", ClearAll),
+            (r"/options", Options)
         ]
         settings = dict(
             template_path=os.path.join(os.path.dirname(__file__), "templates"),
diff --git a/mitmproxy/utils/typecheck.py b/mitmproxy/utils/typecheck.py
index a5f27fee5..87a0e8041 100644
--- a/mitmproxy/utils/typecheck.py
+++ b/mitmproxy/utils/typecheck.py
@@ -98,3 +98,15 @@ def check_option_type(name: str, value: typing.Any, typeinfo: typing.Any) -> Non
         return
     elif not isinstance(value, typeinfo):
         raise e
+
+
+def typespec_to_str(typespec: typing.Any) -> str:
+    if typespec in (str, int, bool):
+        t = typespec.__name__
+    elif typespec == typing.Optional[str]:
+        t = 'optional str'
+    elif typespec == typing.Sequence[str]:
+        t = 'sequence of str'
+    else:
+        raise NotImplementedError
+    return t
diff --git a/test/mitmproxy/test_optmanager.py b/test/mitmproxy/test_optmanager.py
index cadc5d768..0c4006838 100644
--- a/test/mitmproxy/test_optmanager.py
+++ b/test/mitmproxy/test_optmanager.py
@@ -338,6 +338,11 @@ def test_dump_defaults():
     assert optmanager.dump_defaults(o)
 
 
+def test_dump_dicts():
+    o = options.Options()
+    assert optmanager.dump_dicts(o)
+
+
 class TTypes(optmanager.OptManager):
     def __init__(self):
         super().__init__()
diff --git a/test/mitmproxy/tools/web/test_app.py b/test/mitmproxy/tools/web/test_app.py
index 5427b9954..e6d563e7f 100644
--- a/test/mitmproxy/tools/web/test_app.py
+++ b/test/mitmproxy/tools/web/test_app.py
@@ -253,6 +253,16 @@ class TestApp(tornado.testing.AsyncHTTPTestCase):
         assert self.put_json("/settings", {"anticache": True}).code == 200
         assert self.put_json("/settings", {"wtf": True}).code == 400
 
+    def test_options(self):
+        j = json(self.fetch("/options"))
+        assert type(j) == list
+        assert type(j[0]) == dict
+
+    def test_option_update(self):
+        assert self.put_json("/options", {"anticache": True}).code == 200
+        assert self.put_json("/options", {"wtf": True}).code == 400
+        assert self.put_json("/options", {"anticache": "foo"}).code == 400
+
     def test_err(self):
         with mock.patch("mitmproxy.tools.web.app.IndexHandler.get") as f:
             f.side_effect = RuntimeError
diff --git a/test/mitmproxy/utils/test_typecheck.py b/test/mitmproxy/utils/test_typecheck.py
index fe33070e2..66b1884e8 100644
--- a/test/mitmproxy/utils/test_typecheck.py
+++ b/test/mitmproxy/utils/test_typecheck.py
@@ -111,3 +111,11 @@ def test_check_command_type():
     m.__str__ = lambda self: "typing.Union"
     m.__union_params__ = (int,)
     assert not typecheck.check_command_type([22], m)
+
+
+def test_typesec_to_str():
+    assert(typecheck.typespec_to_str(str)) == "str"
+    assert(typecheck.typespec_to_str(typing.Sequence[str])) == "sequence of str"
+    assert(typecheck.typespec_to_str(typing.Optional[str])) == "optional str"
+    with pytest.raises(NotImplementedError):
+        typecheck.typespec_to_str(dict)