diff --git a/bun.lockb b/bun.lockb
index bf8a3eb6..7635f41b 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/database/entities/Attachment.ts b/database/entities/Attachment.ts
index 6ce6cdaa..c1d766eb 100644
--- a/database/entities/Attachment.ts
+++ b/database/entities/Attachment.ts
@@ -1,7 +1,7 @@
+import type { EntityValidator } from "@lysand-org/federation";
 import { proxyUrl } from "@response";
 import type { Config } from "config-manager";
 import type { InferSelectModel } from "drizzle-orm";
-import type * as Lysand from "lysand-types";
 import { MediaBackendType } from "media-manager";
 import { db } from "~drizzle/db";
 import { Attachments } from "~drizzle/schema";
@@ -65,7 +65,7 @@ export const attachmentToAPI = (
 
 export const attachmentToLysand = (
     attachment: Attachment,
-): Lysand.ContentFormat => {
+): typeof EntityValidator.$ContentFormat => {
     return {
         [attachment.mimeType]: {
             content: attachment.url,
@@ -86,7 +86,7 @@ export const attachmentToLysand = (
 };
 
 export const attachmentFromLysand = async (
-    attachmentToConvert: Lysand.ContentFormat,
+    attachmentToConvert: typeof EntityValidator.$ContentFormat,
 ): Promise<InferSelectModel<typeof Attachments>> => {
     const key = Object.keys(attachmentToConvert)[0];
     const value = attachmentToConvert[key];
diff --git a/database/entities/Emoji.ts b/database/entities/Emoji.ts
index 323a26ea..bf4d44f9 100644
--- a/database/entities/Emoji.ts
+++ b/database/entities/Emoji.ts
@@ -1,7 +1,7 @@
-import { emojiValidator, emojiValidatorWithColons } from "@api";
+import { emojiValidatorWithColons } from "@api";
+import type { EntityValidator } from "@lysand-org/federation";
 import { proxyUrl } from "@response";
 import { type InferSelectModel, and, eq } from "drizzle-orm";
-import type * as Lysand from "lysand-types";
 import { db } from "~drizzle/db";
 import { Emojis, Instances } from "~drizzle/schema";
 import type { Emoji as APIEmoji } from "~types/mastodon/emoji";
@@ -41,7 +41,7 @@ export const parseEmojis = async (text: string) => {
  * @returns The emoji
  */
 export const fetchEmoji = async (
-    emojiToFetch: Lysand.Emoji,
+    emojiToFetch: (typeof EntityValidator.$CustomEmojiExtension)["emojis"][0],
     host?: string,
 ): Promise<EmojiWithInstance> => {
     const existingEmoji = await db
@@ -71,7 +71,6 @@ export const fetchEmoji = async (
                 shortcode: emojiToFetch.name,
                 url: Object.entries(emojiToFetch.url)[0][1].content,
                 alt:
-                    emojiToFetch.alt ||
                     Object.entries(emojiToFetch.url)[0][1].description ||
                     undefined,
                 contentType: Object.keys(emojiToFetch.url)[0],
@@ -103,7 +102,9 @@ export const emojiToAPI = (emoji: EmojiWithInstance): APIEmoji => {
     };
 };
 
-export const emojiToLysand = (emoji: EmojiWithInstance): Lysand.Emoji => {
+export const emojiToLysand = (
+    emoji: EmojiWithInstance,
+): (typeof EntityValidator.$CustomEmojiExtension)["emojis"][0] => {
     return {
         name: emoji.shortcode,
         url: {
@@ -112,6 +113,5 @@ export const emojiToLysand = (emoji: EmojiWithInstance): Lysand.Emoji => {
                 description: emoji.alt || undefined,
             },
         },
-        alt: emoji.alt || undefined,
     };
 };
diff --git a/database/entities/Federation.ts b/database/entities/Federation.ts
index bb127d3f..5b0ab77f 100644
--- a/database/entities/Federation.ts
+++ b/database/entities/Federation.ts
@@ -1,11 +1,11 @@
+import type { EntityValidator } from "@lysand-org/federation";
 import { config } from "config-manager";
-import type * as Lysand from "lysand-types";
 import type { User } from "~packages/database-interface/user";
 
 export const localObjectURI = (id: string) => `/objects/${id}`;
 
 export const objectToInboxRequest = async (
-    object: Lysand.Entity,
+    object: typeof EntityValidator.$Entity,
     author: User,
     userToSendTo: User,
 ): Promise<Request> => {
diff --git a/database/entities/Instance.ts b/database/entities/Instance.ts
index 0d1c0902..7532a22e 100644
--- a/database/entities/Instance.ts
+++ b/database/entities/Instance.ts
@@ -1,4 +1,4 @@
-import type * as Lysand from "lysand-types";
+import type { EntityValidator } from "@lysand-org/federation";
 import { db } from "~drizzle/db";
 import { Instances } from "~drizzle/schema";
 
@@ -26,7 +26,7 @@ export const addInstanceIfNotExists = async (url: string) => {
     // Fetch the instance configuration
     const metadata = (await fetch(new URL("/.well-known/lysand", origin)).then(
         (res) => res.json(),
-    )) as Lysand.ServerMetadata;
+    )) as typeof EntityValidator.$ServerMetadata;
 
     if (metadata.type !== "ServerMetadata") {
         throw new Error("Invalid instance metadata (wrong type)");
diff --git a/database/entities/Like.ts b/database/entities/Like.ts
index 31a300dd..d810bd55 100644
--- a/database/entities/Like.ts
+++ b/database/entities/Like.ts
@@ -1,6 +1,6 @@
+import type { EntityValidator } from "@lysand-org/federation";
 import { config } from "config-manager";
 import { type InferSelectModel, and, eq } from "drizzle-orm";
-import type * as Lysand from "lysand-types";
 import { db } from "~drizzle/db";
 import { Likes, Notifications } from "~drizzle/schema";
 import type { Note } from "~packages/database-interface/note";
@@ -11,7 +11,7 @@ export type Like = InferSelectModel<typeof Likes>;
 /**
  * Represents a Like entity in the database.
  */
-export const likeToLysand = (like: Like): Lysand.Like => {
+export const likeToLysand = (like: Like): typeof EntityValidator.$Like => {
     return {
         id: like.id,
         // biome-ignore lint/suspicious/noExplicitAny: to be rewritten
diff --git a/database/entities/Status.ts b/database/entities/Status.ts
index a7727eee..43d142a5 100644
--- a/database/entities/Status.ts
+++ b/database/entities/Status.ts
@@ -1,6 +1,7 @@
 import { mentionValidator } from "@api";
 import markdownItTaskLists from "@hackmd/markdown-it-task-lists";
 import { dualLogger } from "@loggers";
+import type { EntityValidator } from "@lysand-org/federation";
 import { sanitizeHtml, sanitizeHtmlInline } from "@sanitization";
 import { config } from "config-manager";
 import {
@@ -13,7 +14,6 @@ import {
     sql,
 } from "drizzle-orm";
 import linkifyHtml from "linkify-html";
-import type * as Lysand from "lysand-types";
 import {
     anyOf,
     charIn,
@@ -253,7 +253,7 @@ export const findManyNotes = async (
 
 export const resolveNote = async (
     uri?: string,
-    providedNote?: Lysand.Note,
+    providedNote?: typeof EntityValidator.$Note,
 ): Promise<Note> => {
     if (!uri && !providedNote) {
         throw new Error("No URI or note provided");
@@ -265,7 +265,7 @@ export const resolveNote = async (
 
     if (foundStatus) return foundStatus;
 
-    let note: Lysand.Note | null = providedNote ?? null;
+    let note = providedNote ?? null;
 
     if (uri) {
         if (!URL.canParse(uri)) {
@@ -279,7 +279,7 @@ export const resolveNote = async (
             },
         });
 
-        note = (await response.json()) as Lysand.Note;
+        note = (await response.json()) as typeof EntityValidator.$Note;
     }
 
     if (!note) {
@@ -484,7 +484,7 @@ export const replaceTextMentions = async (text: string, mentions: User[]) => {
 };
 
 export const contentToHtml = async (
-    content: Lysand.ContentFormat,
+    content: typeof EntityValidator.$ContentFormat,
     mentions: User[] = [],
     inline = false,
 ): Promise<string> => {
diff --git a/database/entities/User.ts b/database/entities/User.ts
index 467a1d18..e19de6fd 100644
--- a/database/entities/User.ts
+++ b/database/entities/User.ts
@@ -1,8 +1,7 @@
 import { dualLogger } from "@loggers";
-import { addUserToMeilisearch } from "@meilisearch";
+import type { EntityValidator } from "@lysand-org/federation";
 import { config } from "config-manager";
-import { type InferSelectModel, and, eq, inArray, sql } from "drizzle-orm";
-import type * as Lysand from "lysand-types";
+import { type InferSelectModel, and, eq, sql } from "drizzle-orm";
 import { db } from "~drizzle/db";
 import {
     Applications,
@@ -462,7 +461,7 @@ export const getRelationshipToOtherUser = async (
 export const followRequestToLysand = (
     follower: User,
     followee: User,
-): Lysand.Follow => {
+): typeof EntityValidator.$Follow => {
     if (follower.isRemote()) {
         throw new Error("Follower must be a local user");
     }
@@ -490,7 +489,7 @@ export const followRequestToLysand = (
 export const followAcceptToLysand = (
     follower: User,
     followee: User,
-): Lysand.FollowAccept => {
+): typeof EntityValidator.$FollowAccept => {
     if (!follower.isRemote()) {
         throw new Error("Follower must be a remote user");
     }
@@ -518,7 +517,7 @@ export const followAcceptToLysand = (
 export const followRejectToLysand = (
     follower: User,
     followee: User,
-): Lysand.FollowReject => {
+): typeof EntityValidator.$FollowReject => {
     return {
         ...followAcceptToLysand(follower, followee),
         type: "FollowReject",
diff --git a/drizzle/schema.ts b/drizzle/schema.ts
index 1f7345f8..62133d07 100644
--- a/drizzle/schema.ts
+++ b/drizzle/schema.ts
@@ -1,3 +1,4 @@
+import type { EntityValidator } from "@lysand-org/federation";
 import { relations, sql } from "drizzle-orm";
 import {
     type AnyPgColumn,
@@ -12,7 +13,6 @@ import {
     uniqueIndex,
     uuid,
 } from "drizzle-orm/pg-core";
-import type * as Lysand from "lysand-types";
 import type { Source as APISource } from "~types/mastodon/source";
 
 export const Emojis = pgTable("Emojis", {
@@ -354,8 +354,8 @@ export const Users = pgTable(
         isAdmin: boolean("is_admin").default(false).notNull(),
         fields: jsonb("fields").notNull().default("[]").$type<
             {
-                key: Lysand.ContentFormat;
-                value: Lysand.ContentFormat;
+                key: typeof EntityValidator.$ContentFormat;
+                value: typeof EntityValidator.$ContentFormat;
             }[]
         >(),
         endpoints: jsonb("endpoints").$type<Partial<{
diff --git a/package.json b/package.json
index bb6a3958..38b7fe23 100644
--- a/package.json
+++ b/package.json
@@ -98,6 +98,7 @@
         "@inquirer/confirm": "^3.1.6",
         "@inquirer/input": "^2.1.6",
         "@json2csv/plainjs": "^7.0.6",
+        "@lysand-org/federation": "^1.1.3",
         "@oclif/core": "^3.26.6",
         "@tufjs/canonical-json": "^2.0.0",
         "blurhash": "^2.0.5",
diff --git a/packages/database-interface/note.ts b/packages/database-interface/note.ts
index b833aa92..926fad0c 100644
--- a/packages/database-interface/note.ts
+++ b/packages/database-interface/note.ts
@@ -1,3 +1,4 @@
+import type { EntityValidator } from "@lysand-org/federation";
 import { proxyUrl } from "@response";
 import { sanitizedHtmlStrip } from "@sanitization";
 import {
@@ -12,7 +13,6 @@ import {
     sql,
 } from "drizzle-orm";
 import { htmlToText } from "html-to-text";
-import type * as Lysand from "lysand-types";
 import { createRegExp, exactly, global } from "magic-regexp";
 import {
     type Application,
@@ -210,7 +210,7 @@ export class Note {
 
     static async fromData(
         author: User,
-        content: Lysand.ContentFormat,
+        content: typeof EntityValidator.$ContentFormat,
         visibility: APIStatus["visibility"],
         is_sensitive: boolean,
         spoiler_text: string,
@@ -303,7 +303,7 @@ export class Note {
     }
 
     async updateFromData(
-        content?: Lysand.ContentFormat,
+        content?: typeof EntityValidator.$ContentFormat,
         visibility?: APIStatus["visibility"],
         is_sensitive?: boolean,
         spoiler_text?: string,
@@ -539,7 +539,7 @@ export class Note {
         return `/@${this.getAuthor().getUser().username}/${this.id}`;
     }
 
-    toLysand(): Lysand.Note {
+    toLysand(): typeof EntityValidator.$Note {
         const status = this.getStatus();
         return {
             type: "Note",
@@ -563,7 +563,11 @@ export class Note {
             quotes: Note.getURI(status.quotingId) ?? undefined,
             replies_to: Note.getURI(status.replyId) ?? undefined,
             subject: status.spoilerText,
-            visibility: status.visibility as Lysand.Visibility,
+            visibility: status.visibility as
+                | "public"
+                | "unlisted"
+                | "private"
+                | "direct",
             extensions: {
                 "org.lysand:custom_emojis": {
                     emojis: status.emojis.map((emoji) => emojiToLysand(emoji)),
diff --git a/packages/database-interface/user.ts b/packages/database-interface/user.ts
index 71ac7e8a..122a4358 100644
--- a/packages/database-interface/user.ts
+++ b/packages/database-interface/user.ts
@@ -1,5 +1,6 @@
 import { idValidator } from "@api";
 import { getBestContentType, urlToContentFormat } from "@content_types";
+import type { EntityValidator } from "@lysand-org/federation";
 import { addUserToMeilisearch } from "@meilisearch";
 import { proxyUrl } from "@response";
 import {
@@ -14,7 +15,6 @@ import {
     isNull,
 } from "drizzle-orm";
 import { htmlToText } from "html-to-text";
-import type * as Lysand from "lysand-types";
 import {
     emojiToAPI,
     emojiToLysand,
@@ -206,7 +206,9 @@ export class User {
             },
         });
 
-        const data = (await response.json()) as Partial<Lysand.User>;
+        const data = (await response.json()) as Partial<
+            typeof EntityValidator.$User
+        >;
 
         if (
             !(
@@ -255,7 +257,11 @@ export class User {
                         inbox: data.inbox,
                         outbox: data.outbox,
                     },
-                    fields: data.fields ?? [],
+                    fields:
+                        data.fields?.map((f) => ({
+                            key: f.name,
+                            value: f.value,
+                        })) ?? [],
                     updatedAt: new Date(data.created_at).toISOString(),
                     instanceId: instance.id,
                     avatar: data.avatar
@@ -467,7 +473,7 @@ export class User {
         };
     }
 
-    toLysand(): Lysand.User {
+    toLysand(): typeof EntityValidator.$User {
         if (this.isRemote()) {
             throw new Error("Cannot convert remote user to Lysand format");
         }
@@ -520,7 +526,10 @@ export class User {
             avatar: urlToContentFormat(this.getAvatarUrl(config)) ?? undefined,
             header: urlToContentFormat(this.getHeaderUrl(config)) ?? undefined,
             display_name: user.displayName,
-            fields: user.fields,
+            fields: user.fields.map((f) => ({
+                name: f.key,
+                value: f.value,
+            })),
             public_key: {
                 actor: new URL(
                     `/users/${user.id}`,
diff --git a/server/api/objects/[uuid]/index.ts b/server/api/objects/[uuid]/index.ts
index 9d7525b5..5ded42b1 100644
--- a/server/api/objects/[uuid]/index.ts
+++ b/server/api/objects/[uuid]/index.ts
@@ -1,9 +1,9 @@
 import { applyConfig, handleZodError } from "@api";
 import { zValidator } from "@hono/zod-validator";
+import type { EntityValidator } from "@lysand-org/federation";
 import { errorResponse, jsonResponse } from "@response";
 import { and, eq, inArray, sql } from "drizzle-orm";
 import type { Hono } from "hono";
-import type * as Lysand from "lysand-types";
 import { z } from "zod";
 import { type Like, likeToLysand } from "~database/entities/Like";
 import { db } from "~drizzle/db";
@@ -37,7 +37,7 @@ export default (app: Hono) =>
             const { uuid } = context.req.valid("param");
 
             let foundObject: Note | Like | null = null;
-            let apiObject: Lysand.Entity | null = null;
+            let apiObject: typeof EntityValidator.$Entity | null = null;
 
             foundObject = await Note.fromSql(
                 and(
diff --git a/server/api/users/:uuid/inbox/index.ts b/server/api/users/:uuid/inbox/index.ts
index ad6800f4..373ecb50 100644
--- a/server/api/users/:uuid/inbox/index.ts
+++ b/server/api/users/:uuid/inbox/index.ts
@@ -1,10 +1,10 @@
 import { applyConfig, handleZodError } from "@api";
 import { zValidator } from "@hono/zod-validator";
 import { dualLogger } from "@loggers";
+import { EntityValidator, SignatureValidator } from "@lysand-org/federation";
 import { errorResponse, jsonResponse, response } from "@response";
 import { eq } from "drizzle-orm";
 import type { Hono } from "hono";
-import type * as Lysand from "lysand-types";
 import { z } from "zod";
 import { isValidationError } from "zod-validation-error";
 import { resolveNote } from "~database/entities/Status";
@@ -16,7 +16,6 @@ import { db } from "~drizzle/db";
 import { Notifications, Relationships } from "~drizzle/schema";
 import { User } from "~packages/database-interface/user";
 import { LogLevel } from "~packages/log-manager";
-import { EntityValidator, SignatureValidator } from "~packages/lysand-utils";
 
 export const meta = applyConfig({
     allowedMethods: ["POST"],
@@ -82,29 +81,33 @@ export default (app: Hono) =>
 
                 const validator = await SignatureValidator.fromStringKey(
                     sender.getUser().publicKey,
-                    signature,
-                    date,
-                    context.req.method,
-                    new URL(context.req.url),
-                    await context.req.text(),
                 );
 
-                const isValid = await validator.validate();
+                const isValid = await validator
+                    .validate(context.req.raw)
+                    .catch((e) => {
+                        dualLogger.logError(
+                            LogLevel.ERROR,
+                            "Inbox.Signature",
+                            e as Error,
+                        );
+                        return false;
+                    });
 
                 if (!isValid) {
                     return errorResponse("Invalid signature", 400);
                 }
             }
 
-            const validator = new EntityValidator(
-                (await context.req.json()) as Lysand.Entity,
-            );
+            const validator = new EntityValidator();
+            const body: typeof EntityValidator.$Entity =
+                await context.req.json();
 
             try {
                 // Add sent data to database
-                switch (validator.getType()) {
+                switch (body.type) {
                     case "Note": {
-                        const note = await validator.validate<Lysand.Note>();
+                        const note = await validator.Note(body);
 
                         const account = await User.resolve(note.author);
 
@@ -131,8 +134,7 @@ export default (app: Hono) =>
                         return response("Note created", 201);
                     }
                     case "Follow": {
-                        const follow =
-                            await validator.validate<Lysand.Follow>();
+                        const follow = await validator.Follow(body);
 
                         const account = await User.resolve(follow.author);
 
@@ -175,8 +177,7 @@ export default (app: Hono) =>
                         return response("Follow request sent", 200);
                     }
                     case "FollowAccept": {
-                        const followAccept =
-                            await validator.validate<Lysand.FollowAccept>();
+                        const followAccept = await validator.FollowAccept(body);
 
                         console.log(followAccept);
 
@@ -211,8 +212,7 @@ export default (app: Hono) =>
                         return response("Follow request accepted", 200);
                     }
                     case "FollowReject": {
-                        const followReject =
-                            await validator.validate<Lysand.FollowReject>();
+                        const followReject = await validator.FollowReject(body);
 
                         const account = await User.resolve(followReject.author);
 
diff --git a/server/api/well-known/lysand.ts b/server/api/well-known/lysand.ts
index 230f6b03..f726eeef 100644
--- a/server/api/well-known/lysand.ts
+++ b/server/api/well-known/lysand.ts
@@ -1,8 +1,8 @@
 import { applyConfig } from "@api";
 import { urlToContentFormat } from "@content_types";
+import type { EntityValidator } from "@lysand-org/federation";
 import { jsonResponse } from "@response";
 import type { Hono } from "hono";
-import type * as Lysand from "lysand-types";
 import pkg from "~package.json";
 import { config } from "~packages/config-manager";
 
@@ -29,5 +29,5 @@ export default (app: Hono) =>
             banner: urlToContentFormat(config.instance.banner) ?? undefined,
             supported_extensions: ["org.lysand:custom_emojis"],
             website: "https://lysand.org",
-        } satisfies Lysand.ServerMetadata);
+        } satisfies typeof EntityValidator.$ServerMetadata);
     });
diff --git a/utils/content_types.ts b/utils/content_types.ts
index 95a39ac6..41bbf0c2 100644
--- a/utils/content_types.ts
+++ b/utils/content_types.ts
@@ -1,7 +1,9 @@
-import type * as Lysand from "lysand-types";
+import type { EntityValidator } from "@lysand-org/federation";
 import { lookup } from "mime-types";
 
-export const getBestContentType = (content?: Lysand.ContentFormat) => {
+export const getBestContentType = (
+    content?: typeof EntityValidator.$ContentFormat,
+) => {
     if (!content) return { content: "", format: "text/plain" };
 
     const bestFormatsRanked = [
@@ -21,7 +23,7 @@ export const getBestContentType = (content?: Lysand.ContentFormat) => {
 
 export const urlToContentFormat = (
     url: string,
-): Lysand.ContentFormat | null => {
+): typeof EntityValidator.$ContentFormat | null => {
     if (!url) return null;
     if (url.startsWith("https://api.dicebear.com/")) {
         return {