diff --git a/src/middleware/auth98.ts b/src/middleware/auth98.ts
index 90861826..280af908 100644
--- a/src/middleware/auth98.ts
+++ b/src/middleware/auth98.ts
@@ -2,7 +2,8 @@ import { type AppMiddleware } from '@/app.ts';
 import { Conf } from '@/config.ts';
 import { HTTPException } from '@/deps.ts';
 import { type Event } from '@/event.ts';
-import { decode64Schema, jsonSchema, signedEventSchema } from '@/schema.ts';
+import { decode64Schema, jsonSchema } from '@/schema.ts';
+import { signedEventSchema } from '@/schemas/nostr.ts';
 import { eventAge, findTag, sha256, Time } from '@/utils.ts';
 
 const decodeEventSchema = decode64Schema.pipe(jsonSchema).pipe(signedEventSchema);
diff --git a/src/schema.ts b/src/schema.ts
index 635dff8b..646367e7 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -1,4 +1,4 @@
-import { verifySignature, z } from '@/deps.ts';
+import { z } from '@/deps.ts';
 
 import type { Event } from './event.ts';
 
@@ -67,20 +67,6 @@ const relaySchema = z.custom<URL>((relay) => {
   }
 });
 
-const hexIdSchema = z.string().regex(/^[0-9a-f]{64}$/);
-
-const eventSchema = z.object({
-  id: hexIdSchema,
-  kind: z.number(),
-  tags: z.array(z.array(z.string())),
-  content: z.string(),
-  created_at: z.number(),
-  pubkey: hexIdSchema,
-  sig: z.string(),
-});
-
-const signedEventSchema = eventSchema.refine(verifySignature);
-
 const emojiTagSchema = z.tuple([z.literal('emoji'), z.string(), z.string().url()]);
 
 /** https://developer.mozilla.org/en-US/docs/Glossary/Base64#the_unicode_problem */
@@ -102,12 +88,10 @@ export {
   emojiTagSchema,
   filteredArray,
   hashtagSchema,
-  hexIdSchema,
   jsonSchema,
   type MetaContent,
   metaContentSchema,
   parseMetaContent,
   parseRelay,
   relaySchema,
-  signedEventSchema,
 };
diff --git a/src/schemas/nostr.ts b/src/schemas/nostr.ts
index 9f42b4fe..1b318dbf 100644
--- a/src/schemas/nostr.ts
+++ b/src/schemas/nostr.ts
@@ -1,7 +1,23 @@
-import { z } from '@/deps.ts';
+import { verifySignature, z } from '@/deps.ts';
 
-import { hexIdSchema, signedEventSchema } from '../schema.ts';
+/** Schema to validate Nostr hex IDs such as event IDs and pubkeys. */
+const hexIdSchema = z.string().regex(/^[0-9a-f]{64}$/);
 
+/** Nostr event schema. */
+const eventSchema = z.object({
+  id: hexIdSchema,
+  kind: z.number(),
+  tags: z.array(z.array(z.string())),
+  content: z.string(),
+  created_at: z.number(),
+  pubkey: hexIdSchema,
+  sig: z.string(),
+});
+
+/** Nostr event schema that also verifies the event's signature. */
+const signedEventSchema = eventSchema.refine(verifySignature);
+
+/** Nostr relay filter schema. */
 const filterSchema = z.object({
   kinds: z.number().int().positive().array().optional(),
   ids: hexIdSchema.array().optional(),
@@ -14,12 +30,11 @@ const filterSchema = z.object({
   z.string().array(),
 ));
 
+/** Client message to a Nostr relay. */
 const clientMsgSchema = z.union([
   z.tuple([z.literal('REQ'), z.string().min(1)]).rest(filterSchema),
   z.tuple([z.literal('EVENT'), signedEventSchema]),
   z.tuple([z.literal('CLOSE'), z.string().min(1)]),
 ]);
 
-type Filter = z.infer<typeof filterSchema>;
-
-export { clientMsgSchema, filterSchema };
+export { clientMsgSchema, filterSchema, hexIdSchema, signedEventSchema };
diff --git a/src/sign.ts b/src/sign.ts
index 228496f7..c0bebca2 100644
--- a/src/sign.ts
+++ b/src/sign.ts
@@ -1,6 +1,6 @@
 import { type AppContext } from '@/app.ts';
 import { getEventHash, getPublicKey, getSignature, HTTPException, z } from '@/deps.ts';
-import { signedEventSchema } from '@/schema.ts';
+import { signedEventSchema } from '@/schemas/nostr.ts';
 import { ws } from '@/stream.ts';
 
 import type { Event, EventTemplate, SignedEvent } from '@/event.ts';
diff --git a/src/trends.ts b/src/trends.ts
index 3bb19d44..aa1ea2dc 100644
--- a/src/trends.ts
+++ b/src/trends.ts
@@ -1,5 +1,6 @@
 import { Sqlite } from '@/deps.ts';
-import { hashtagSchema, hexIdSchema } from '@/schema.ts';
+import { hashtagSchema } from '@/schema.ts';
+import { hexIdSchema } from '@/schemas/nostr.ts';
 import { Time } from '@/utils.ts';
 import { generateDateRange } from '@/utils/time.ts';