diff --git a/src/schemas/instance.ts b/src/schemas/instance.ts
index 807d0c657..74f4928f0 100644
--- a/src/schemas/instance.ts
+++ b/src/schemas/instance.ts
@@ -3,7 +3,8 @@ import z from 'zod';
 
 import { accountSchema } from './account';
 import { mrfSimpleSchema } from './pleroma';
-import { coerceObject, mimeSchema } from './utils';
+import { ruleSchema } from './rule';
+import { coerceObject, filteredArray, mimeSchema } from './utils';
 
 const configurationSchema = coerceObject({
   chats: coerceObject({
@@ -24,14 +25,14 @@ const configurationSchema = coerceObject({
     video_size_limit: z.number().optional().catch(undefined),
   }),
   polls: coerceObject({
-    max_characters_per_option: z.number().catch(25),
-    max_expiration: z.number().catch(2629746),
-    max_options: z.number().catch(4),
-    min_expiration: z.number().catch(300),
+    max_characters_per_option: z.number().optional().catch(undefined),
+    max_expiration: z.number().optional().catch(undefined),
+    max_options: z.number().optional().catch(undefined),
+    min_expiration: z.number().optional().catch(undefined),
   }),
   statuses: coerceObject({
-    max_characters: z.number().catch(500),
-    max_media_attachments: z.number().catch(4),
+    max_characters: z.number().optional().catch(undefined),
+    max_media_attachments: z.number().optional().catch(undefined),
   }),
 });
 
@@ -51,7 +52,11 @@ const pleromaSchema = coerceObject({
       mrf_policies: z.string().array().optional().catch(undefined),
       mrf_simple: mrfSimpleSchema,
     }),
-    fields_limits: z.any(),
+    fields_limits: coerceObject({
+      max_fields: z.number().nonnegative().catch(4),
+      name_length: z.number().nonnegative().catch(255),
+      value_length: z.number().nonnegative().catch(2047),
+    }),
     migration_cooldown_period: z.number().optional().catch(undefined),
     restrict_unauthenticated: coerceObject({
       activities: coerceObject({
@@ -81,6 +86,13 @@ const pleromaSchema = coerceObject({
   vapid_public_key: z.string().catch(''),
 });
 
+const pleromaPollLimitsSchema = coerceObject({
+  max_expiration: z.number().optional().catch(undefined),
+  max_option_chars: z.number().optional().catch(undefined),
+  max_options: z.number().optional().catch(undefined),
+  min_expiration: z.number().optional().catch(undefined),
+});
+
 const statsSchema = coerceObject({
   domain_count: z.number().catch(0),
   status_count: z.number().catch(0),
@@ -107,10 +119,13 @@ const instanceSchema = coerceObject({
   feature_quote: z.boolean().catch(false),
   fedibird_capabilities: z.array(z.string()).catch([]),
   languages: z.string().array().catch([]),
+  max_media_attachments: z.number().optional().catch(undefined),
+  max_toot_chars: z.number().optional().catch(undefined),
   nostr: nostrSchema.optional().catch(undefined),
   pleroma: pleromaSchema,
+  poll_limits: pleromaPollLimitsSchema,
   registrations: z.boolean().catch(false),
-  rules: z.any(),
+  rules: filteredArray(ruleSchema),
   short_description: z.string().catch(''),
   stats: statsSchema,
   thumbnail: z.string().catch(''),
@@ -118,6 +133,31 @@ const instanceSchema = coerceObject({
   urls: urlsSchema,
   usage: usageSchema,
   version: z.string().catch(''),
+}).transform(({ max_media_attachments, max_toot_chars, poll_limits, ...instance }) => {
+  const { configuration } = instance;
+
+  const polls = {
+    ...configuration.polls,
+    max_characters_per_option: configuration.polls.max_characters_per_option ?? poll_limits.max_option_chars ?? 25,
+    max_expiration: configuration.polls.max_expiration ?? poll_limits.max_expiration ?? 2629746,
+    max_options: configuration.polls.max_options ?? poll_limits.max_options ?? 4,
+    min_expiration: configuration.polls.min_expiration ?? poll_limits.min_expiration ?? 300,
+  };
+
+  const statuses = {
+    ...configuration.statuses,
+    max_characters: configuration.statuses.max_characters ?? max_toot_chars ?? 500,
+    max_media_attachments: configuration.statuses.max_media_attachments ?? max_media_attachments ?? 4,
+  };
+
+  return {
+    ...instance,
+    configuration: {
+      ...configuration,
+      polls,
+      statuses,
+    },
+  };
 });
 
 type Instance = z.infer<typeof instanceSchema>;
diff --git a/src/schemas/rule.ts b/src/schemas/rule.ts
new file mode 100644
index 000000000..32f949b08
--- /dev/null
+++ b/src/schemas/rule.ts
@@ -0,0 +1,12 @@
+import { z } from 'zod';
+
+import { coerceObject } from './utils';
+
+const ruleSchema = coerceObject({
+  id: z.string(),
+  text: z.string().catch(''),
+});
+
+type Rule = z.infer<typeof ruleSchema>;
+
+export { ruleSchema, type Rule };
\ No newline at end of file