diff --git a/private/compile.rkt b/private/compile.rkt
index 1361d40..c6d72d7 100644
--- a/private/compile.rkt
+++ b/private/compile.rkt
@@ -2,8 +2,15 @@
 
 ;; compiler
 
+(provide (struct-out rule)
+         generate-operations
+         execute-rule)
+
+;; A compiler rule
+;; Input files, output file, compile function
 (struct rule [inputs output compiler] #:transparent)
 
+;; Converts set of rules into ordered list of rules to execute based on current filesystem state
 (define (generate-operations rules)
   (define nodes (mutable-set))
   (define edges (make-hash))
@@ -92,10 +99,19 @@
     (error "self-check failed lmao"))
   dirty-sorted)
 
-
-(define compiler-rules
-  (set
-    (rule '("test.o") "my_binary" void)
-    (rule '("test.c") "test.o" void)))
-
-(generate-operations compiler-rules)
+;; Executes one rule
+(define (execute-rule r)
+  (match-define (rule in out func) r)
+  (define cust (make-custodian))
+  (parameterize ([current-custodian cust])
+    (thread-wait
+      (thread
+        (lambda ()
+          (call-with-atomic-output-file
+            out
+            (lambda (out-port tmp-path)
+              (func
+                (for/hash ([fn (in-list in)])
+                  (values fn (open-input-file fn)))
+                out-port)))))))
+  (custodian-shutdown-all cust))
diff --git a/private/rules.rkt b/private/rules.rkt
new file mode 100644
index 0000000..303505c
--- /dev/null
+++ b/private/rules.rkt
@@ -0,0 +1,65 @@
+#lang racket
+
+;; static generation rules
+
+(require json
+         "compile.rkt")
+
+(define ACTOR-CONTEXT
+  (list "https://www.w3.org/ns/activitystreams"
+        "https://w3id.org/security/v1"
+        (hash 'manuallyApprovesFollowers "as:manuallyApprovesFollowers"
+              'sensitive "as:sensitive"
+              'movedTo "as:movedTo"
+              'Hashtag "as:Hashtag"
+              'toot "http://joinmastodon.org/ns#"
+              'Emoji "toot:Emoji"
+              'focalPoint (hash '@container "@list"
+                                 '@id "toot:focalPoint")
+              'featured "toot:featured")))
+
+(define compile-index-json
+  (rule '("db/actorkey.pub") "public/index.json"
+        (lambda (in out)
+          (define key (port->string (hash-ref in "db/actorkey.pub")))
+          (define actor (hash
+                          '@context ACTOR-CONTEXT
+                          'Type "Person"
+                          'id "https://example.tld/"
+                          'name "haskal"
+                          'preferredUsername "haskal"
+                          'icon (hash 'type "Image"
+                                       'url "something"
+                                       'sensitive #f)
+                          'image (hash 'type "Image"
+                                       'url "something"
+                                       'sensitive #f)
+                          'tag (list (hash 'type "Hashtag"
+                                            'href "https://example.tld/tags/blahaj"
+                                            'name "#blahaj"))
+                          'manuallyApprovesFollowers #f
+                          'summary "summary lol"
+                          'attachment (list (hash 'type "PropertyValue"
+                                                   'name "pronouns"
+                                                   'value "they/them"))
+                          'url "https://example.tld/"
+                          'inbox "https://example.tld/inbox"
+                          'sharedInbox "https://example.tld/inbox"
+                          'endpoints (hash 'sharedInbox "https://example.tld/inbox")
+                          'outbox "https://example.tld/outbox"
+                          'following 'null
+                          'followers "https://example.tld/followers"
+                          'liked 'null
+                          'publicKey (hash 'id "https://example.tld/#main-key"
+                                            'type "Key"
+                                            'owner "https://example.tld/"
+                                            'publicKeyPem key)))
+          (write-json actor out))))
+
+(define compiler-rules
+   (set compile-index-json))
+
+(define ops (generate-operations compiler-rules))
+(for ([op (in-list ops)])
+  (printf "executing ~s\n" op)
+  (execute-rule op))