diff --git a/__tests__/comment.test.ts b/__tests__/comment.test.ts
index 8149e8f..8c140dd 100644
--- a/__tests__/comment.test.ts
+++ b/__tests__/comment.test.ts
@@ -159,13 +159,13 @@ describe("createComment", () => {
   beforeEach(() => {
     jest
       .spyOn<any, string>(octokit.rest.issues, "createComment")
-      .mockResolvedValue("")
+      .mockResolvedValue("<return value>")
   })
 
   it("with comment body or previousBody", async () => {
-    expect(
-      await createComment(octokit, repo, 456, "hello there", "")
-    ).toBeUndefined()
+    expect(await createComment(octokit, repo, 456, "hello there", "")).toEqual(
+      "<return value>"
+    )
     expect(octokit.rest.issues.createComment).toBeCalledWith({
       issue_number: 456,
       owner: "marocchino",
@@ -174,7 +174,7 @@ describe("createComment", () => {
     })
     expect(
       await createComment(octokit, repo, 456, "hello there", "TypeA")
-    ).toBeUndefined()
+    ).toEqual("<return value>")
     expect(octokit.rest.issues.createComment).toBeCalledWith({
       issue_number: 456,
       owner: "marocchino",
diff --git a/action.yml b/action.yml
index 6c9d264..6b335c3 100644
--- a/action.yml
+++ b/action.yml
@@ -78,6 +78,11 @@ inputs:
     description: "The GitHub access token (e.g. secrets.GITHUB_TOKEN) used to create or update the comment. This defaults to {{ github.token }}."
     default: "${{ github.token }}"
     required: false
+outputs:
+  previous_comment_id:
+    description: "ID of previous comment, if found"
+  created_comment_id:
+    description: "ID of newly created comment, if any"
 runs:
   using: "node16"
   main: "dist/index.js"
diff --git a/src/comment.ts b/src/comment.ts
index da70951..4c7a148 100644
--- a/src/comment.ts
+++ b/src/comment.ts
@@ -7,6 +7,10 @@ import {
 } from "@octokit/graphql-schema"
 import {GitHub} from "@actions/github/lib/utils"
 
+type CreateCommentResponse = Awaited<
+  ReturnType<InstanceType<typeof GitHub>["rest"]["issues"]["createComment"]>
+>
+
 function headerComment(header: String): string {
   return `<!-- Sticky Pull Request Comment${header} -->`
 }
@@ -111,11 +115,13 @@ export async function createComment(
   body: string,
   header: string,
   previousBody?: string
-): Promise<void> {
-  if (!body && !previousBody)
-    return core.warning("Comment body cannot be blank")
+): Promise<CreateCommentResponse | undefined> {
+  if (!body && !previousBody) {
+    core.warning("Comment body cannot be blank")
+    return
+  }
 
-  await octokit.rest.issues.createComment({
+  return await octokit.rest.issues.createComment({
     ...repo,
     issue_number,
     body: previousBody
@@ -145,7 +151,7 @@ export async function minimizeComment(
 ): Promise<void> {
   await octokit.graphql(
     `
-    mutation($input: MinimizeCommentInput!) { 
+    mutation($input: MinimizeCommentInput!) {
       minimizeComment(input: $input) {
         clientMutationId
       }
diff --git a/src/main.ts b/src/main.ts
index 3232fce..34f792e 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -64,6 +64,8 @@ async function run(): Promise<undefined> {
       header
     )
 
+    core.setOutput("previous_comment_id", previous?.id)
+
     if (deleteOldComment) {
       if (previous) {
         await deleteComment(octokit, previous.id)
@@ -75,7 +77,14 @@ async function run(): Promise<undefined> {
       if (onlyUpdateComment) {
         return
       }
-      await createComment(octokit, repo, pullRequestNumber, body, header)
+      const created = await createComment(
+        octokit,
+        repo,
+        pullRequestNumber,
+        body,
+        header
+      )
+      core.setOutput("created_comment_id", created?.data.id)
       return
     }
 
@@ -93,7 +102,7 @@ async function run(): Promise<undefined> {
     const previousBody = getBodyOf(previous, append, hideDetails)
     if (recreate) {
       await deleteComment(octokit, previous.id)
-      await createComment(
+      const created = await createComment(
         octokit,
         repo,
         pullRequestNumber,
@@ -101,12 +110,20 @@ async function run(): Promise<undefined> {
         header,
         previousBody
       )
+      core.setOutput("created_comment_id", created?.data.id)
       return
     }
 
     if (hideAndRecreate) {
       await minimizeComment(octokit, previous.id, hideClassify)
-      await createComment(octokit, repo, pullRequestNumber, body, header)
+      const created = await createComment(
+        octokit,
+        repo,
+        pullRequestNumber,
+        body,
+        header
+      )
+      core.setOutput("created_comment_id", created?.data.id)
       return
     }