diff --git a/nest_frontend/LocalizationStrings.js b/nest_frontend/LocalizationStrings.js
index 9de817f..335e0a9 100644
--- a/nest_frontend/LocalizationStrings.js
+++ b/nest_frontend/LocalizationStrings.js
@@ -71,6 +71,11 @@ export default {
         alerts: "Allarmi",
         alertTitle: "I tuoi allarmi",
         alertCreate: "Crea un allarme",
+        alertName: "Nome allarme", // TODO: tradurre
+        createAlert: "Crea allarme", // TODO: tradurre
+        alertLimit: "Limite", // TODO: tradurre e migliorare?
+        alertWindow: "Finestra (in ore)", // TODO: tradurre
+
         notImplemented: "🚧 Non implementato.",
 
         settings: "Impostazioni",
diff --git a/nest_frontend/PageSwitcher.js b/nest_frontend/PageSwitcher.js
index db7332f..41e3cb3 100644
--- a/nest_frontend/PageSwitcher.js
+++ b/nest_frontend/PageSwitcher.js
@@ -27,7 +27,7 @@ export default function PageSwitcher({ ...props }) {
             <Route path={"/repositories/:id/alerts/create"} exact={true}>
                 <PageRepositoryAlertsCreate/>
             </Route>
-            <Route path={"/repositories/:id/alerts"} exact={true}>
+            <Route path={"/repositories/:id/alerts/"} exact={true}>
                 <PageRepositoryAlerts/>
             </Route>
             <Route path={"/repositories/:id/share"} exact={true}>
diff --git a/nest_frontend/components/interactive/BoxAlertCreate.js b/nest_frontend/components/interactive/BoxAlertCreate.js
new file mode 100644
index 0000000..e97a7f2
--- /dev/null
+++ b/nest_frontend/components/interactive/BoxAlertCreate.js
@@ -0,0 +1,109 @@
+import React from "react"
+import BoxFull from "../base/BoxFull"
+import FormLabelled from "../base/FormLabelled"
+import FormLabel from "../base/formparts/FormLabel"
+import InputWithIcon from "../base/InputWithIcon"
+import {
+    faBackward, faBell,
+    faFolder,
+    faPencilAlt,
+    faPlus, faStopwatch,
+    faThermometerThreeQuarters,
+} from "@fortawesome/free-solid-svg-icons"
+import Radio from "../base/Radio"
+import Button from "../base/Button"
+import useRepositoryEditor from "../../hooks/useRepositoryEditor"
+import FormAlert from "../base/formparts/FormAlert"
+import { useHistory } from "react-router"
+import useStrings from "../../hooks/useStrings"
+
+
+export default function BoxAlertCreate(
+    {
+        name,
+        setName,
+        evaluationMode,
+        setEvaluationMode,
+        limit,
+        setLimit,
+        windowSize,
+        setWindowSize,
+        running,
+        error,
+        save,
+        ...props
+    }) {
+
+    const strings = useStrings()
+
+    return (
+        <BoxFull header={strings.createRepo} {...props}>
+            <FormLabelled
+                onSubmit={e => {
+                    e.preventDefault()
+                    save()
+                }}
+            >
+                <FormLabel htmlFor={"alert-name"} text={strings.alertName}>
+                    <InputWithIcon
+                        id={"alert-name"}
+                        icon={faBell}
+                        value={name}
+                        onChange={e => setName(e.target.value)}
+                    />
+                </FormLabel>
+                <FormLabel htmlFor={"filter-mode"} text={strings.request}>
+                    <label>
+                        <Radio
+                            name={"filter-mode"}
+                            onChange={() => setEvaluationMode(0)}
+                            checked={evaluationMode === 0}
+                        />
+                        {strings.filterOR}
+                    </label>
+                    &nbsp;
+                    <label>
+                        <Radio
+                            name={"filter-mode"}
+                            onChange={() => setEvaluationMode(1)}
+                            checked={evaluationMode === 1}
+                        />
+                        {strings.filterAND}
+                    </label>
+                </FormLabel>
+                <FormLabel htmlFor={"alert-limit"} text={strings.alertLimit}>
+                    <InputWithIcon
+                        id={"alert-limit"}
+                        type={"number"}
+                        icon={faThermometerThreeQuarters}
+                        value={limit}
+                        onChange={e => setLimit(e.target.limit)}
+                    />
+                </FormLabel>
+                <FormLabel htmlFor={"alert-window"} text={strings.alertWindow}>
+                    <InputWithIcon
+                        id={"alert-window"}
+                        type={"number"}
+                        icon={faStopwatch}
+                        value={windowSize}
+                        onChange={e => setWindowSize(e.target.limit)}
+                    />
+                </FormLabel>
+                {error ?
+                 <FormAlert color={"Red"}>
+                     {strings[error.data.code]}
+                 </FormAlert>
+                       : null}
+                 <Button
+                     style={{ "gridColumn": "1 / 3" }}
+                     icon={faPlus}
+                     color={"Green"}
+                     onClick={save}
+                     disabled={running}
+                 >
+                     {strings.createAlert}
+                 </Button>
+            </FormLabelled>
+        </BoxFull>
+    )
+}
diff --git a/nest_frontend/components/providers/AlertEditor.js b/nest_frontend/components/providers/AlertEditor.js
new file mode 100644
index 0000000..ab365a2
--- /dev/null
+++ b/nest_frontend/components/providers/AlertEditor.js
@@ -0,0 +1,145 @@
+import React, { useCallback, useState } from "react"
+import ContextConditionEditor from "../../contexts/ContextConditionEditor"
+import useArrayState from "../../hooks/useArrayState"
+import Style from "./RepositoryEditor.module.css"
+import BoxConditionLocation from "../interactive/BoxConditionLocation"
+import BoxConditionHashtag from "../interactive/BoxConditionHashtag"
+import BoxConditionUser from "../interactive/BoxConditionUser"
+import BoxConditionDatetime from "../interactive/BoxConditionDatetime"
+import BoxConditions from "../interactive/BoxConditions"
+import classNames from "classnames"
+import { Condition } from "../../objects/Condition"
+import useBackendViewset from "../../hooks/useBackendViewset"
+import { Redirect, useParams } from "react-router"
+import BoxAlertCreate from "../interactive/BoxAlertCreate"
+
+
+export default function AlertEditor({className}) {
+    /** The connected repository id. */
+    const {id: repoId} = useParams()
+
+    /** The alert name. */
+    const [_name, setName] = useState("")
+
+    /** The alert limit. */
+    const [limit, setLimit] = useState(10)
+
+    /** The window size. */
+    const [windowSize, setWindowSize] = useState(24)
+
+    /** The conditions of the data gathering. */
+    const {
+        value: rawConditions,
+        setValue: setRawConditions,
+        appendValue: appendRawCondition,
+        removeValue: removeRawCondition,
+        spliceValue: spliceRawCondition,
+    } = useArrayState([])
+    const _conditions = rawConditions.map(cond => Condition.fromRaw(cond))
+
+    /** The operator the conditions should be evaluated with. */
+    const [_evaluationMode, setEvaluationMode] = useState(0)
+
+    /** The backend viewset to use to create / edit the repository. */
+    const {running, error, createResource} = useBackendViewset(
+        `/api/v1/repositories/${repoId}/alerts/`,
+        "name",
+        {
+            list: false,
+            create: true,
+            retrieve: false,
+            edit: false,
+            destroy: false,
+            command: false,
+            action: false,
+        }
+    )
+
+    /** If `true`, switches to the repository page on the next render. */
+    const [switchPage, setSwitchPage] = useState(false)
+
+    /**
+     * Save the current changes, creating or editing it as needed.
+     *
+     * @type {(function(): Promise<void>)|*}
+     */
+    const save = useCallback(
+        async () => {
+            const body = {
+                "repository_id": repoId,
+                "name": _name,
+                "window_size": windowSize,
+                "limit": limit,
+                "evaluation_mode": _evaluationMode,
+                "conditions": _conditions,
+            }
+
+            console.info("Creating new alert with body: ", body)
+            await createResource(body)
+            setSwitchPage(true)
+        },
+        [repoId, createResource, _conditions, _evaluationMode, _name, limit],
+    )
+
+    /**
+     * Try to add a new condition, logging a message to the console if something goes wrong.
+     *
+     * @type {(function(): void)|*}
+     */
+    const addCondition = useCallback(
+        (newCond) => {
+
+            // Check for duplicates
+            let duplicate = null
+            for(const oldCond of _conditions) {
+                if(newCond.type === oldCond.type && newCond.content === oldCond.content) {
+                    duplicate = oldCond
+                    break
+                }
+            }
+            if(duplicate) {
+                console.debug("Cannot add ", newCond, ": ", duplicate, " already exists.")
+                return
+            }
+
+            console.debug("Adding ", newCond, " to the repository conditions")
+            appendRawCondition(newCond)
+        },
+        [_conditions, appendRawCondition],
+    )
+
+    // Hack to switch page on success
+    if(!error && switchPage) {
+        return <Redirect to={`/repositories/${repoId}/alerts/`}/>
+    }
+
+    return (
+        <ContextConditionEditor.Provider
+            value={{
+                conditions: _conditions, addCondition, appendRawCondition, removeRawCondition, spliceRawCondition,
+            }}
+        >
+            <div className={classNames(Style.RepositoryEditor, className)}>
+                <BoxConditionLocation className={Style.SearchByZone}/>
+                <BoxConditionHashtag className={Style.SearchByHashtags}/>
+                <BoxConditionUser className={Style.SearchByUser}/>
+                <BoxConditionDatetime className={Style.SearchByTimePeriod}/>
+                <BoxConditions className={Style.Conditions}/>
+                <BoxAlertCreate
+                    className={Style.CreateDialog}
+                    name={_name}
+                    setName={setName}
+                    evaluationMode={_evaluationMode}
+                    setEvaluationMode={setEvaluationMode}
+                    limit={limit}
+                    setLimit={setLimit}
+                    windowSize={windowSize}
+                    setWindowSize={setWindowSize}
+                    running={running}
+                    error={error}
+                    save={save}
+                />
+            </div>
+        </ContextConditionEditor.Provider>
+    )
+}
diff --git a/nest_frontend/routes/PageRepositoriesList.js b/nest_frontend/routes/PageRepositoriesList.js
index e2ac85a..840fde2 100644
--- a/nest_frontend/routes/PageRepositoriesList.js
+++ b/nest_frontend/routes/PageRepositoriesList.js
@@ -52,7 +52,7 @@ export default function PageRepositoriesList() {
                         repositories={bv.resources.filter(r => r.is_active)}
                         view={pk => history.push(`/repositories/${pk}`)}
                         share={pk => history.push(`/repositories/${pk}/share`)}
-                        alerts={pk => history.push(`/repositories/${pk}/alerts`)}
+                        alerts={pk => history.push(`/repositories/${pk}/alerts/`)}
                         archive={archive}
                         edit={pk => history.push(`/repositories/${pk}/edit`)}
                     />
diff --git a/nest_frontend/routes/PageRepositoryAlertsCreate.js b/nest_frontend/routes/PageRepositoryAlertsCreate.js
index bd3ea08..6ecb44e 100644
--- a/nest_frontend/routes/PageRepositoryAlertsCreate.js
+++ b/nest_frontend/routes/PageRepositoryAlertsCreate.js
@@ -1,32 +1,15 @@
 import React, { useContext } from "react"
-import BoxFull from "../components/base/BoxFull"
 import ContextLanguage from "../contexts/ContextLanguage"
 import BoxHeader from "../components/base/BoxHeader"
-import { useHistory, useParams } from "react-router"
+import { useParams } from "react-router"
 import { faPlus } from "@fortawesome/free-solid-svg-icons"
 import PageWithHeader from "../components/base/layout/PageWithHeader"
 import makeIcon from "../utils/makeIcon"
-import useBackendViewset from "../hooks/useBackendViewset"
+import AlertEditor from "../components/providers/AlertEditor"
 
 
 export default function PageRepositoryAlertsCreate() {
     const { strings } = useContext(ContextLanguage)
-    const { id } = useParams()
-    const history = useHistory()
-
-    const {createResource} = useBackendViewset(
-        `/api/v1/repositories/${id}/alerts/`,
-        "name",
-        {
-            list: false,
-            create: true,
-            retrieve: false,
-            edit: false,
-            destroy: false,
-            command: false,
-            action: false,
-        }
-    )
 
     return (
         <PageWithHeader
@@ -36,9 +19,7 @@ export default function PageRepositoryAlertsCreate() {
                 </BoxHeader>
             }
         >
-            <BoxFull header={strings.alertTitle}>
-                {strings.notImplemented}
-            </BoxFull>
+            <AlertEditor/>
         </PageWithHeader>
     )
 }