diff --git a/backend/src/activitypub/deliver.ts b/backend/src/activitypub/deliver.ts
index c743839..34d0369 100644
--- a/backend/src/activitypub/deliver.ts
+++ b/backend/src/activitypub/deliver.ts
@@ -7,12 +7,14 @@ import type { Actor } from './actors'
 import { generateDigestHeader } from 'wildebeest/backend/src/utils/http-signing-cavage'
 import { signRequest } from 'wildebeest/backend/src/utils/http-signing'
 import { getFollowers } from 'wildebeest/backend/src/mastodon/follow'
-
-const headers = {
-	'content-type': 'application/activity+json',
-}
+import { WILDEBEEST_VERSION, MASTODON_API_VERSION } from 'wildebeest/config/versions'
 
 export async function deliverToActor(signingKey: CryptoKey, from: Actor, to: Actor, activity: Activity) {
+	const headers = {
+		Accept: 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
+		'User-Agent': `Wildebeest/${WILDEBEEST_VERSION} Mastodon/${MASTODON_API_VERSION}`,
+	}
+
 	const body = JSON.stringify(activity)
 	console.log({ body })
 	const req = new Request(to.inbox, {
@@ -29,10 +31,7 @@ export async function deliverToActor(signingKey: CryptoKey, from: Actor, to: Act
 		const body = await res.text()
 		throw new Error(`delivery to ${to.inbox} returned ${res.status}: ${body}`)
 	}
-	{
-		const body = await res.text()
-		console.log(`${to.inbox} returned 200: ${body}`)
-	}
+	console.log(`${to.inbox} returned 200`)
 }
 
 export async function deliverFollowers(
diff --git a/config/versions.ts b/config/versions.ts
index 5ecefae..737dd2e 100644
--- a/config/versions.ts
+++ b/config/versions.ts
@@ -1,7 +1,7 @@
 import * as packagejson from '../package.json'
 
 // https://github.com/mastodon/mastodon/blob/main/CHANGELOG.md
-const MASTODON_API_VERSION = '4.0.2'
+export const MASTODON_API_VERSION = '4.0.2'
 
 export const WILDEBEEST_VERSION = packagejson.version
 
diff --git a/consumer/src/deliver.ts b/consumer/src/deliver.ts
index d3a08a5..d1a7a78 100644
--- a/consumer/src/deliver.ts
+++ b/consumer/src/deliver.ts
@@ -5,6 +5,7 @@ import type { Actor } from 'wildebeest/backend/src/activitypub/actors'
 import type { Env } from './'
 import { generateDigestHeader } from 'wildebeest/backend/src/utils/http-signing-cavage'
 import { signRequest } from 'wildebeest/backend/src/utils/http-signing'
+import { deliverToActor } from 'wildebeest/backend/src/activitypub/deliver'
 
 const headers = {
 	'content-type': 'application/activity+json',
@@ -18,26 +19,6 @@ export async function handleDeliverMessage(env: Env, actor: Actor, message: Deli
 		return
 	}
 
-	const body = JSON.stringify(message.activity)
-
-	const req = new Request(targetActor.inbox, {
-		method: 'POST',
-		body,
-		headers,
-	})
-	const digest = await generateDigestHeader(body)
-	req.headers.set('Digest', digest)
 	const signingKey = await getSigningKey(message.userKEK, env.DATABASE, actor)
-	await signRequest(req, signingKey, actor.id)
-
-	const res = await fetch(req)
-	if (!res.ok) {
-		const body = await res.text()
-		console.error(`delivery to ${targetActor.inbox} returned ${res.status}: ${body}`)
-		return
-	}
-	{
-		const body = await res.text()
-		console.log(`${targetActor.inbox} returned 200: ${body}`)
-	}
+	await deliverToActor(signingKey, actor, targetActor, message.activity)
 }
diff --git a/consumer/test/consumer.spec.ts b/consumer/test/consumer.spec.ts
index 0f1106e..7ab8e2e 100644
--- a/consumer/test/consumer.spec.ts
+++ b/consumer/test/consumer.spec.ts
@@ -29,6 +29,8 @@ describe('Consumer', () => {
 				}
 
 				if (input.url.toString() === 'https://example.com/inbox') {
+					assert(input.headers.get('accept').includes('json'))
+					assert(input.headers.get('user-agent').includes('Wildebeest'))
 					assert.equal(input.method, 'POST')
 					receivedActivity = await input.json()
 					return new Response('')