diff --git a/activitypub.c b/activitypub.c
index bdee395..4a7c247 100644
--- a/activitypub.c
+++ b/activitypub.c
@@ -165,6 +165,9 @@ int activitypub_get_handler(d_char *req, char *q_path,
     snac snac;
     xs *msg = xs_dict_new();
 
+    if (accept == NULL)
+        return 400;
+
     if (xs_str_in(accept, "application/activity+json") == -1 &&
         xs_str_in(accept, "application/ld+json") == -1)
         return 0;
@@ -222,11 +225,14 @@ int activitypub_post_handler(d_char *req, char *q_path,
                              char **body, int *b_size, char **ctype)
 /* processes an input message */
 {
-    int status = 200;
+    int status = 202; /* accepted */
     char *headers = xs_dict_get(req, "headers");
     char *i_ctype = xs_dict_get(headers, "content-type");
     snac snac;
 
+    if (i_ctype == NULL)
+        return 400;
+
     if (xs_str_in(i_ctype, "application/activity+json") == -1 &&
         xs_str_in(i_ctype, "application/ld+json") == -1)
         return 0;
@@ -247,6 +253,16 @@ int activitypub_post_handler(d_char *req, char *q_path,
         return 404;
     }
 
+    /* decode */
+    xs *msg = xs_json_loads(payload);
+
+    if (msg && xs_dict_get(msg, "actor") && xs_dict_get(msg, "type"))
+        enqueue_input(&snac, msg);
+    else {
+        srv_log(xs_fmt("activitypub_post_handler JSON error %s", q_path));
+        status = 400;
+    }
+
     user_free(&snac);
 
     return status;
diff --git a/data.c b/data.c
index 3f5d5e0..67b1802 100644
--- a/data.c
+++ b/data.c
@@ -709,6 +709,33 @@ int actor_get(snac *snac, char *actor, d_char **data)
 }
 
 
+void enqueue_input(snac *snac, char *msg)
+/* enqueues an input message */
+{
+    xs *ntid = tid(0);
+    xs *fn   = xs_fmt("%s/queue/%s.json", snac->basedir, ntid);
+    xs *tfn  = xs_str_cat(fn, ".tmp");
+    FILE *f;
+
+    if ((f = fopen(tfn, "w")) != NULL) {
+        xs *qmsg = xs_dict_new();
+        xs *j;
+
+        qmsg = xs_dict_append(qmsg, "type",   "input");
+        qmsg = xs_dict_append(qmsg, "object", msg);
+
+        j = xs_json_dumps_pp(qmsg, 4);
+
+        fwrite(j, strlen(j), 1, f);
+        fclose(f);
+
+        rename(tfn, fn);
+
+        snac_debug(snac, 2, xs_fmt("enqueue_input %s", fn));
+    }
+}
+
+
 void enqueue_output(snac *snac, char *actor, char *msg, int retries)
 /* enqueues an output message for an actor */
 {
@@ -740,7 +767,7 @@ void enqueue_output(snac *snac, char *actor, char *msg, int retries)
 
         rename(tfn, fn);
 
-        snac_debug(snac, 2, xs_fmt("enqueue %s %s %d", actor, fn, retries));
+        snac_debug(snac, 2, xs_fmt("enqueue_output %s %s %d", actor, fn, retries));
     }
 }
 
diff --git a/snac.h b/snac.h
index 149889a..c750c75 100644
--- a/snac.h
+++ b/snac.h
@@ -64,6 +64,7 @@ int is_muted(snac *snac, char *actor);
 int actor_add(snac *snac, char *actor, char *msg);
 int actor_get(snac *snac, char *actor, d_char **data);
 
+void enqueue_input(snac *snac, char *msg);
 void enqueue_output(snac *snac, char *actor, char *msg, int retries);
 
 d_char *queue(snac *snac);