diff --git a/src/db/api/ApiInterface.ts b/src/db/api/ApiInterface.ts
index bb85948..9a68d4a 100644
--- a/src/db/api/ApiInterface.ts
+++ b/src/db/api/ApiInterface.ts
@@ -267,24 +267,33 @@ export class ApiInterface implements DbInterface {
   }
 
   async listNotes(): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/notes");
   }
   async getNoteById(nid: string): Promise<Note> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/notes/:nid", { params: { nid } });
   }
   async deleteNoteById(nid: string): Promise<void> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    await this.#call("DELETE", "/notes/:nid", { params: { nid } });
   }
-  async createNote(note: CreateNote): Promise<Note> {
-    throw new Error("Unimplemented");
+  async createNote(note: CreateNote, _ctx: { uid: string }): Promise<Note> {
+    this.#checkReadonly();
+    return this.#call("POST", "/abodes/:aid/notes", {
+      params: { aid: note.aid },
+      body: note,
+    });
   }
-  async updateNote(note: UpdateNote): Promise<Note> {
-    throw new Error("Unimplemented");
+  async updateNote(note: UpdateNote, _ctx: { uid: string }): Promise<Note> {
+    this.#checkReadonly();
+    return this.#call("PATCH", "/notes/:nid", {
+      params: { nid: note.nid },
+      body: note,
+    });
   }
   async listNotesByAbodeId(aid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/abodes/:aid/notes", { params: { aid } });
   }
   async listNotesByUserId(uid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/users/:uid/notes", { params: { uid } });
   }
 }
diff --git a/src/db/sqlite/SqliteInterface.ts b/src/db/sqlite/SqliteInterface.ts
index 3775863..a8f2332 100644
--- a/src/db/sqlite/SqliteInterface.ts
+++ b/src/db/sqlite/SqliteInterface.ts
@@ -33,6 +33,8 @@ import {
   selectClientApikeys,
   selectClientUser,
   selectClientUsers,
+  selectNote,
+  selectPartialNotes,
   selectResident,
   selectResidents,
 } from "./query.js";
@@ -465,24 +467,71 @@ export class SqliteInterface implements BackendDbInterface {
   }
 
   async listNotes(): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return selectPartialNotes(this.#db);
+  }
+  #getNoteById(nid: string): Note {
+    const note = selectNote(this.#db, sql`n."nid" = ${{ uuid: nid }}`);
+    if (!note) throw new NotFoundAbodeError();
+    return note;
   }
   async getNoteById(nid: string): Promise<Note> {
-    throw new Error("Unimplemented");
+    return this.#getNoteById(nid);
   }
   async deleteNoteById(nid: string): Promise<void> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    const { changes } = this.#db.run(
+      sql`DELETE FROM "notes" WHERE "nid" = ${{ uuid: nid }}`
+    );
+    if (!changes) throw new NotFoundAbodeError();
   }
   async createNote(note: CreateNote, ctx: { uid: string }): Promise<Note> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    const nid = crypto.randomUUID();
+    return this.#db.rethrow(() =>
+      this.#db.multi(() => {
+        this.#db.run(sql`
+          INSERT INTO "notes"("nid", "aid", "name", "content", "properties", "created_by", "updated_by")
+          VALUES(
+            ${{ uuid: nid }},
+            ${{ uuid: note.aid }},
+            ${{ text: note.name }},
+            ${{ text: note.content ?? "" }},
+            ${{ jsonb: note.properties }},
+            ${{ uuid: ctx.uid }},
+            ${{ uuid: ctx.uid }}
+          )
+        `);
+        return this.#getNoteById(nid);
+      })
+    );
   }
   async updateNote(note: UpdateNote, ctx: { uid: string }): Promise<Note> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    const updates = calcUpdates({
+      name: (value: string) => sql`"name" = ${{ text: value }}`,
+      content: (value: string) => sql`"content" = ${{ text: value }}`,
+      properties: (value: object) => sql`"properties" = ${{ jsonb: value }}`,
+    })(note);
+    if (!updates.length) throw new InvalidAbodeError();
+    return this.#db.rethrow(() =>
+      this.#db.multi(() => {
+        const { changes } = this.#db.run(sql`
+          UPDATE "notes"
+          SET
+            "updated_at" = datetime('now', 'localtime', 'subsec'),
+            "updated_by" = ${{ uuid: ctx.uid }},
+            ${joinSql(updates, sql`, `)}
+          WHERE "nid" = ${{ uuid: note.nid }}
+        `);
+        if (!changes) throw new NotFoundAbodeError();
+        return this.#getNoteById(note.nid);
+      })
+    );
   }
   async listNotesByAbodeId(aid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return selectPartialNotes(this.#db, sql`n."aid" = ${{ uuid: aid }}`);
   }
   async listNotesByUserId(uid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return selectPartialNotes(this.#db, sql`n."created_by" = ${{ uuid: uid }}`);
   }
 }
diff --git a/src/db/sqlite/cast.ts b/src/db/sqlite/cast.ts
index 129cca9..c4e9115 100644
--- a/src/db/sqlite/cast.ts
+++ b/src/db/sqlite/cast.ts
@@ -1,5 +1,12 @@
 import type { Abode } from "../types/Abode.js";
 import type { ApikeyPermissions, ClientApikey } from "../types/Apikey.js";
+import type {
+  Note,
+  NoteProperties,
+  NoteType,
+  PartialNote,
+  PartialNoteProperties,
+} from "../types/Note.js";
 import type { Resident, ResidentFlags } from "../types/Resident.js";
 import type { ClientUser, PartialUser, UserFlags } from "../types/User.js";
 
@@ -160,3 +167,71 @@ export function sqliteToClientApikey(apikey: {
     expires_at: apikey.expires_at ? sqliteToDate(apikey.expires_at) : null,
   };
 }
+
+const validNoteTypes = new Set<NoteType>(["note"]);
+export function sqliteToNoteProperties(props: string): NoteProperties {
+  const parsed = JSON.parse(props);
+  const out: NoteProperties = {};
+  if (
+    typeof parsed === "object" &&
+    parsed &&
+    !Array.isArray(parsed) &&
+    validNoteTypes.has(parsed.type)
+  ) {
+    out.type = parsed.type;
+  }
+  return out;
+}
+
+export function sqliteToPartialNoteProperties(
+  props: string
+): PartialNoteProperties {
+  const base = sqliteToNoteProperties(props);
+  return { type: base.type ?? "note" };
+}
+
+export function sqliteToNote(note: {
+  nid: Buffer | Uint8Array;
+  aid: Buffer | Uint8Array;
+  name: string;
+  content: string;
+  properties: string;
+  created_at: string;
+  created_by: Buffer | Uint8Array | null;
+  updated_at: string;
+  updated_by: Buffer | Uint8Array | null;
+}): Note {
+  return {
+    nid: sqliteToUuid(note.nid),
+    aid: sqliteToUuid(note.aid),
+    name: note.name,
+    content: note.content,
+    properties: sqliteToNoteProperties(note.properties),
+    created_at: sqliteToDate(note.created_at),
+    created_by: note.created_by ? sqliteToUuid(note.created_by) : null,
+    updated_at: sqliteToDate(note.updated_at),
+    updated_by: note.updated_by ? sqliteToUuid(note.updated_by) : null,
+  };
+}
+
+export function sqliteToPartialNote(note: {
+  nid: Buffer | Uint8Array;
+  aid: Buffer | Uint8Array;
+  name: string;
+  properties: string;
+  created_at: string;
+  created_by: Buffer | Uint8Array | null;
+  updated_at: string;
+  updated_by: Buffer | Uint8Array | null;
+}): PartialNote {
+  return {
+    nid: sqliteToUuid(note.nid),
+    aid: sqliteToUuid(note.aid),
+    name: note.name,
+    properties: sqliteToPartialNoteProperties(note.properties),
+    created_at: sqliteToDate(note.created_at),
+    created_by: note.created_by ? sqliteToUuid(note.created_by) : null,
+    updated_at: sqliteToDate(note.updated_at),
+    updated_by: note.updated_by ? sqliteToUuid(note.updated_by) : null,
+  };
+}
diff --git a/src/db/sqlite/query.ts b/src/db/sqlite/query.ts
index 75fff69..79534f9 100644
--- a/src/db/sqlite/query.ts
+++ b/src/db/sqlite/query.ts
@@ -1,11 +1,14 @@
 import type { Abode } from "../types/Abode.js";
 import type { ClientApikey } from "../types/Apikey.js";
+import type { Note, PartialNote } from "../types/Note.js";
 import type { Resident } from "../types/Resident.js";
 import type { ClientUser } from "../types/User.js";
 import {
   sqliteToAbode,
   sqliteToClientApikey,
   sqliteToClientUser,
+  sqliteToNote,
+  sqliteToPartialNote,
   sqliteToResident,
 } from "./cast.js";
 import type { WrappedDb } from "./impl/types.js";
@@ -122,3 +125,46 @@ export function selectClientApikeys(
   );
   return rawApikeys.map(sqliteToClientApikey);
 }
+
+type RawNote = {
+  nid: Buffer | Uint8Array;
+  aid: Buffer | Uint8Array;
+  name: string;
+  content: string;
+  properties: string;
+  created_at: string;
+  created_by: Buffer | Uint8Array | null;
+  updated_at: string;
+  updated_by: Buffer | Uint8Array | null;
+};
+const sqlNote = sql`
+  SELECT n."nid", n."aid", n."name", n."content", json(n."properties") AS "properties",
+         n."created_at", n."created_by", n."updated_at", n."updated_by"
+  FROM "notes" n
+`;
+
+type RawPartialNote = Omit<RawNote, "content">;
+const sqlPartialNote = sql`
+  SELECT n."nid", n."aid", n."name", json(n."properties") AS "properties",
+         n."created_at", n."created_by", n."updated_at", n."updated_by"
+  FROM "notes" n
+`;
+
+export function selectNote(db: WrappedDb, where: SqlCode): Note | null {
+  const raw = db.get<RawNote>(sql`${sqlNote} WHERE ${where}`);
+  if (raw) return sqliteToNote(raw);
+  return null;
+}
+export function selectNotes(db: WrappedDb, where?: SqlCode): Note[] {
+  const raws = db.all<RawNote>(where ? sql`${sqlNote} WHERE ${where}` : sqlNote);
+  return raws.map(sqliteToNote);
+}
+export function selectPartialNotes(
+  db: WrappedDb,
+  where?: SqlCode
+): PartialNote[] {
+  const raws = db.all<RawPartialNote>(
+    where ? sql`${sqlPartialNote} WHERE ${where}` : sqlPartialNote
+  );
+  return raws.map(sqliteToPartialNote);
+}
diff --git a/src/webapi/apirouter.ts b/src/webapi/apirouter.ts
index 6c5c9ac..b34b360 100644
--- a/src/webapi/apirouter.ts
+++ b/src/webapi/apirouter.ts
@@ -11,6 +11,7 @@ import {
   loginuser,
   updateabode,
   updateresident,
+  updatenote,
   updateuser,
 } from "../schema/validators.js";
 import { authenticate } from "./middleware/authenticate.js";
@@ -94,11 +95,11 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     await db.deleteApikeyById(ctx.params.kid);
     ctx.status = 204;
   });
-  router.post("/user/:uid/auth/clear-sessions", async (ctx) => {
+  router.post("/users/:uid/auth/clear-sessions", async (ctx) => {
     await db.deleteSessionsByUser(ctx.params.uid);
     ctx.status = 204;
   });
-  router.get("/user/:uid/notes", async (ctx) => {
+  router.get("/users/:uid/notes", async (ctx) => {
     ctx.body = await db.listNotesByUserId(ctx.params.uid);
   });
 
@@ -188,7 +189,7 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
   });
   router.patch(
     "/notes/:nid",
-    jsonBody({ includeParams: ["nid"] }),
+    jsonBody({ validate: updatenote, includeParams: ["nid"] }),
     async (ctx) => {
       ctx.body = await db.updateNote(ctx.request.body, { uid: ctx.user!.uid });
     }