diff --git a/intake/app.py b/intake/app.py
index 4d1addf..21df08f 100644
--- a/intake/app.py
+++ b/intake/app.py
@@ -5,7 +5,7 @@ import time
 
 from flask import Flask, render_template, request, jsonify, abort, redirect, url_for
 
-from intake.source import LocalSource
+from intake.source import LocalSource, execute_action
 
 # Globals
 app = Flask(__name__)
@@ -70,7 +70,7 @@ def source_feed(source_name):
         if count_arg.isdigit() and page_arg.isdigit():
             count = int(count_arg)
             page = int(page_arg)
-            sorted_items = sorted_items[count * page:count * page + count]
+            sorted_items = sorted_items[count * page : count * page + count]
 
     return render_template(
         "feed.jinja2",
@@ -126,6 +126,13 @@ def mass_deactivate():
     return jsonify({})
 
 
+@app.post("/action/<string:source_name>/<string:item_id>/<string:action>")
+def action(source_name, item_id, action):
+    source = LocalSource(intake_data_dir(), source_name)
+    item = execute_action(source, item_id, action)
+    return jsonify(item)
+
+
 def wsgi():
     # init_default_logging()
     return app
diff --git a/intake/source.py b/intake/source.py
index 5ac5054..659c377 100755
--- a/intake/source.py
+++ b/intake/source.py
@@ -75,7 +75,7 @@ class LocalSource:
                 yield json.loads(filepath.read_text(encoding="utf8"))
 
 
-def read_stdout(process: Popen, output: list):
+def _read_stdout(process: Popen, output: list) -> None:
     """
     Read the subprocess's stdout into memory.
     This prevents the process from blocking when the pipe fills up.
@@ -89,7 +89,7 @@ def read_stdout(process: Popen, output: list):
             break
 
 
-def read_stderr(process: Popen):
+def _read_stderr(process: Popen) -> None:
     """
     Read the subprocess's stderr stream and pass it to logging.
     This prevents the process from blocking when the pipe fills up.
@@ -102,12 +102,12 @@ def read_stderr(process: Popen):
             break
 
 
-def execute_source_action(
+def _execute_source_action(
     source: LocalSource, action: str, input: str, timeout: timedelta
-):
+) -> List[str]:
     """
     Execute the action from a given source. If stdin is specified, pass it
-    along to the process.
+    along to the process. Returns lines from stdout.
     """
     # Gather the information necessary to launch the process
     config = source.get_config()
@@ -141,9 +141,9 @@ def execute_source_action(
 
     # Kick off monitoring threads
     output = []
-    t_stdout: Thread = Thread(target=read_stdout, args=(process, output), daemon=True)
+    t_stdout: Thread = Thread(target=_read_stdout, args=(process, output), daemon=True)
     t_stdout.start()
-    t_stderr: Thread = Thread(target=read_stderr, args=(process,), daemon=True)
+    t_stderr: Thread = Thread(target=_read_stderr, args=(process,), daemon=True)
     t_stderr.start()
 
     # Send input to the process, if provided
@@ -168,7 +168,7 @@ def execute_source_action(
     return output
 
 
-def fetch_items(source: LocalSource, timeout: int = 60):
+def fetch_items(source: LocalSource, timeout: int = 60) -> List[dict]:
     """
     Execute the feed source and return the current feed items.
     Returns a list of feed items on success.
@@ -176,7 +176,7 @@ def fetch_items(source: LocalSource, timeout: int = 60):
     """
     items = []
 
-    output = execute_source_action(source, "fetch", None, timedelta(timeout))
+    output = _execute_source_action(source, "fetch", None, timedelta(timeout))
 
     for line in output:
         try:
@@ -188,13 +188,17 @@ def fetch_items(source: LocalSource, timeout: int = 60):
     return items
 
 
-def execute_action(source: LocalSource, item_id: str, action: str, timeout: int = 60):
+def execute_action(
+    source: LocalSource, item_id: str, action: str, timeout: int = 60
+) -> dict:
     """
     Execute the action for a feed source.
     """
     item = source.get_item(item_id)
 
-    output = execute_source_action(source, action, json.dumps(item), timedelta(timeout))
+    output = _execute_source_action(
+        source, action, json.dumps(item), timedelta(timeout)
+    )
     if not output:
         raise SourceUpdateException("no item")
 
diff --git a/intake/templates/feed.jinja2 b/intake/templates/feed.jinja2
index 0c219ed..7af83cf 100644
--- a/intake/templates/feed.jinja2
+++ b/intake/templates/feed.jinja2
@@ -99,14 +99,13 @@ var mdeactivate = function (items) {
 		location.reload();
 	});
 };
-var callback = function (source, itemid) {
-	document.getElementById(source + "-" + itemid + "-callback").disabled = true;
-	fetch('/callback/', {
+var doAction = function (source, itemid, action) {
+	document.getElementById(`${source}-${itemid}-action-${action}`).disabled = true;
+	fetch(`/action/${source}/${itemid}/${action}`, {
 		method: 'POST',
 		headers: {
 			'Content-Type': 'application/json; charset=UTF-8',
 		},
-		body: JSON.stringify({source: source, itemid: itemid}),
 	})
 	.then(function (data) {
 		location.reload()
@@ -130,15 +129,15 @@ var callback = function (source, itemid) {
 	{% endif %}
 
 	{# The item title is a clickable <summary> if there is body content #}
-	{% if item.body or item.callback %}
+	{% if item.body or item.action %}
 	<details>
 	<summary><span class="item-title">{{item.title}}</span></summary>
 	{% if item.body %}
 	<p>{{item.body|safe}}</p>
 	{% endif %}
-	{% if item.callback %}
-	<p><button id="{{item.source}}-{{item.id}}-callback" onclick="javascript:callback('{{item.source}}', '{{item.id}}')">Callback</button></p>
-	{% endif %}
+	{% for action in item.action %}
+	<p><button id="{{item.source}}-{{item.id}}-action-{{action}}" onclick="javascript:doAction('{{item.source}}', '{{item.id}}', '{{action}}')">{{action}}</button></p>
+	{% endfor %}
 	</details>
 	{% else %}
 	<span class="item-title">{{item.title}}</span><br>
diff --git a/tests/demo_basic_callback/increment.py b/tests/demo_basic_callback/increment.py
index 56a4239..5954bc0 100755
--- a/tests/demo_basic_callback/increment.py
+++ b/tests/demo_basic_callback/increment.py
@@ -20,5 +20,6 @@ if args.action == "increment":
     item = sys.stdin.readline()
     item = json.loads(item)
     item["action"]["increment"] += 1
+    item["body"] = f"<p>{item['action']['increment']}</p>"
     print(json.dumps(item))
     pass