You can easily fork this repo, customize the tests to your usecase and then run the test suite.

git clone git@github.com:rmdes/activitypub-tests.git

— Discovery —
WebFinger resolution ✓ PASS
WebFinger subscribe template ✓ PASS
WebFinger error handling ✓ PASS
NodeInfo endpoint ✓ PASS
NodeInfo well-known chain ✓ PASS
NodeInfo version format ✓ PASS
NodeInfo content types ✓ PASS

— Actor —
Actor lookup (fedify) ✓ PASS
Actor required fields ✓ PASS
Actor JSON structure ✓ PASS
Actor attachments (PropertyValue) ✓ PASS
Actor multi-key (RSA + Ed25519) ✓ PASS
Actor summary / bio ✓ PASS
Actor alsoKnownAs ✓ PASS
Actor manuallyApprovesFollowers ✓ PASS
Actor icon and image ✓ PASS
Actor not found (404) ✓ PASS
Actor ld+json Accept header ✓ PASS

— Collections —
Outbox collection ✓ PASS
Followers collection ✓ PASS
Following collection ✓ PASS
Liked collection ✓ PASS
Featured (pinned) collection ✓ PASS
Featured tags collection ✓ PASS
Featured tags structure ✓ PASS
Collection URI resolution ✓ PASS
Collection pagination ✓ PASS
Outbox traversal (first page) ✓ PASS
Outbox actor attribution ✓ PASS

— Content Negotiation —
Post returns AS2 JSON ✓ PASS
HTML requests don’t get AS2 JSON ✓ PASS
Root URL redirects to actor ✓ PASS
Object dispatcher (dereference) ✓ PASS

— Inbox —
GET inbox returns 405 ✓ PASS
GET shared inbox returns 405 ✓ PASS
Inbox 405 headers (Allow, Content-Type) ✓ PASS
Unsigned POST to inbox rejected ✓ PASS

— Instance Actor & Aliases —
Instance actor (Application) ✓ PASS
WebFinger alias resolution ✓ PASS

— HTTP Protocol —
HTTP headers compliance ✓ PASS
Vary and CORS headers ✓ PASS

— Endpoints —
Authorize interaction ✓ PASS
Public profile page ✓ PASS
Quick replies 404 ✓ PASS

============================================
Results: 44 passed, 0 failed, 0 skipped

https://rmendes.net/articles/2026/02/25/activitypub-federation-tests-fedify-2