diff --git a/src/server/webhooks/events/pr/event.test.ts b/src/server/webhooks/events/pr/event.test.ts
index e29aea0..856736b 100644
--- a/src/server/webhooks/events/pr/event.test.ts
+++ b/src/server/webhooks/events/pr/event.test.ts
@@ -1,5 +1,6 @@
 import { describe, test } from "vitest"
-import { isPrEventKey } from "./event.js"
+import type { Event } from "../event.js"
+import { isPrEvent, isPrEventKey } from "./event.js"
 
 describe("isPrEventKey", () => {
 	test("pr:comment:added", ({ expect }) => {
@@ -12,3 +13,15 @@ describe("isPrEventKey", () => {
 		expect(result).toBe(false)
 	})
 })
+
+describe("isPrEvent", () => {
+	test("pr:comment:added", ({ expect }) => {
+		const result = isPrEvent({ eventKey: "pr:comment:added" } as Event)
+		expect(result).toBe(true)
+	})
+
+	test("project:modified", ({ expect }) => {
+		const result = isPrEvent({ eventKey: "project:modified" } as Event)
+		expect(result).toBe(false)
+	})
+})
diff --git a/src/server/webhooks/events/pr/event.ts b/src/server/webhooks/events/pr/event.ts
index f5fbe51..85fd09a 100644
--- a/src/server/webhooks/events/pr/event.ts
+++ b/src/server/webhooks/events/pr/event.ts
@@ -1,3 +1,4 @@
+import type { Event } from "../event.js"
 import type { PRCommentAdded } from "./comment_added.js"
 import type { PRCommentDeleted } from "./comment_deleted.js"
 import type { PRCommentEdited } from "./comment_edited.js"
@@ -29,6 +30,10 @@ export type PrEvent =
 	| PRReviewerUpdated
 export type PrEventKey = PrEvent["eventKey"]
 
+export function isPrEvent(event: Event): event is PrEvent {
+	return isPrEventKey(event.eventKey)
+}
+
 export function isPrEventKey(key: unknown): key is PrEventKey {
 	return Object.values<unknown>(prEventKeys).includes(key)
 }
diff --git a/src/server/webhooks/events/project/event.test.ts b/src/server/webhooks/events/project/event.test.ts
index 5ba097f..d6e6434 100644
--- a/src/server/webhooks/events/project/event.test.ts
+++ b/src/server/webhooks/events/project/event.test.ts
@@ -1,5 +1,6 @@
 import { describe, test } from "vitest"
-import { isProjectEventKey } from "./event.js"
+import type { Event } from "../event.js"
+import { isProjectEvent, isProjectEventKey } from "./event.js"
 
 describe("isProjectEventKey", () => {
 	test("project:modified", ({ expect }) => {
@@ -12,3 +13,17 @@ describe("isProjectEventKey", () => {
 		expect(result).toBe(false)
 	})
 })
+
+describe("isProjectEvent", () => {
+	test("project:modified", ({ expect }) => {
+		const result = isProjectEvent({ eventKey: "project:modified" } as Event)
+		expect(result).toBe(true)
+	})
+
+	test("mirror:repo_synchronized", ({ expect }) => {
+		const result = isProjectEvent({
+			eventKey: "mirror:repo_synchronized",
+		} as Event)
+		expect(result).toBe(false)
+	})
+})
diff --git a/src/server/webhooks/events/project/event.ts b/src/server/webhooks/events/project/event.ts
index 3c1ab9f..c872d9b 100644
--- a/src/server/webhooks/events/project/event.ts
+++ b/src/server/webhooks/events/project/event.ts
@@ -1,9 +1,14 @@
+import type { Event } from "../event.js"
 import type { ProjectModified } from "./modified.js"
 
 /** You can create webhooks for events that occur in a project. */
 export type ProjectEvent = ProjectModified
 export type ProjectEventKey = ProjectEvent["eventKey"]
 
+export function isProjectEvent(event: Event): event is ProjectEvent {
+	return isProjectEventKey(event.eventKey)
+}
+
 export function isProjectEventKey(key: unknown): key is ProjectEventKey {
 	return Object.values<unknown>(projectEventKeys).includes(key)
 }
diff --git a/src/server/webhooks/events/repo/event.test.ts b/src/server/webhooks/events/repo/event.test.ts
index ce74106..1e410c3 100644
--- a/src/server/webhooks/events/repo/event.test.ts
+++ b/src/server/webhooks/events/repo/event.test.ts
@@ -1,5 +1,6 @@
 import { describe, test } from "vitest"
-import { isRepoEventKey } from "./event.js"
+import type { Event } from "../event.js"
+import { isRepoEvent, isRepoEventKey } from "./event.js"
 
 describe("isRepoEventKey", () => {
 	test("mirror:repo_synchronized", ({ expect }) => {
@@ -12,3 +13,16 @@ describe("isRepoEventKey", () => {
 		expect(result).toBe(false)
 	})
 })
+describe("isRepoEvent", () => {
+	test("mirror:repo_synchronized", ({ expect }) => {
+		const result = isRepoEvent({
+			eventKey: "mirror:repo_synchronized",
+		} as Event)
+		expect(result).toBe(true)
+	})
+
+	test("project:modified", ({ expect }) => {
+		const result = isRepoEvent({ eventKey: "project:modified" } as Event)
+		expect(result).toBe(false)
+	})
+})
diff --git a/src/server/webhooks/events/repo/event.ts b/src/server/webhooks/events/repo/event.ts
index a102c8a..6960607 100644
--- a/src/server/webhooks/events/repo/event.ts
+++ b/src/server/webhooks/events/repo/event.ts
@@ -1,3 +1,4 @@
+import type { Event } from "../event.js"
 import type { RepoCommentAdded } from "./comment_added.js"
 import type { RepoCommentDeleted } from "./comment_deleted.js"
 import type { RepoCommentEdited } from "./comment_edited.js"
@@ -19,6 +20,10 @@ export type RepoEvent =
 	| RepoSecretDetected
 export type RepoEventKey = RepoEvent["eventKey"]
 
+export function isRepoEvent(event: Event): event is RepoEvent {
+	return isRepoEventKey(event.eventKey)
+}
+
 export function isRepoEventKey(key: unknown): key is RepoEventKey {
 	return Object.values<unknown>(repoEventKeys).includes(key)
 }