diff --git a/client/src/api.ts b/client/src/api.ts
index 926468a..bc91fdb 100644
--- a/client/src/api.ts
+++ b/client/src/api.ts
@@ -6,6 +6,9 @@ import type {
   GameItem,
   GameTalent,
   RollResult,
+  Spell,
+  CharacterSpell,
+  SpellCastResult,
 } from "./types";
 
 const BASE = "/api";
@@ -134,3 +137,36 @@ export const getGameTalents = () => request<GameTalent[]>("/game-talents");
 // Rolls
 export const getRolls = (campaignId: number) =>
   request<RollResult[]>(`/campaigns/${campaignId}/rolls`);
+
+// Spells
+export async function getSpells(spellClass?: string): Promise<Spell[]> {
+  const qs = spellClass ? `?class=${spellClass}` : "";
+  return request<Spell[]>(`/spells${qs}`);
+}
+
+export async function getCharacterSpells(characterId: number): Promise<CharacterSpell[]> {
+  return request<CharacterSpell[]>(`/characters/${characterId}/spells`);
+}
+
+export async function addCharacterSpell(characterId: number, spellId: number): Promise<CharacterSpell> {
+  return request<CharacterSpell>(`/characters/${characterId}/spells`, {
+    method: "POST",
+    body: JSON.stringify({ spell_id: spellId }),
+  });
+}
+
+export async function removeCharacterSpell(characterId: number, spellId: number): Promise<void> {
+  return request<void>(`/characters/${characterId}/spells/${spellId}`, { method: "DELETE" });
+}
+
+export async function castSpell(characterId: number, spellId: number): Promise<SpellCastResult> {
+  return request<SpellCastResult>(`/characters/${characterId}/spells/${spellId}/cast`, { method: "POST" });
+}
+
+export async function restCharacter(characterId: number): Promise<void> {
+  return request<void>(`/characters/${characterId}/rest`, { method: "POST" });
+}
+
+export async function undoRoll(campaignId: number, rollId: number): Promise<void> {
+  return request<void>(`/campaigns/${campaignId}/rolls/${rollId}/undo`, { method: "POST" });
+}
diff --git a/client/src/types.ts b/client/src/types.ts
index c3c7b48..0209ee3 100644
--- a/client/src/types.ts
+++ b/client/src/types.ts
@@ -96,6 +96,7 @@ export interface RollResult {
   character_name: string;
   character_color: string;
   type: "attack" | "ability-check" | "custom";
+  subtype?: string;
   label: string;
   dice_expression: string;
   rolls: number[];
@@ -104,5 +105,55 @@ export interface RollResult {
   advantage: boolean;
   disadvantage: boolean;
   nat20: boolean;
+  undone?: boolean;
   created_at: string;
 }
+
+export interface Spell {
+  id: number;
+  name: string;
+  class: "wizard" | "priest" | "both";
+  tier: number;
+  casting_stat: "INT" | "WIS";
+  duration: string;
+  range: string;
+  is_focus: number;
+  description: string;
+}
+
+export interface CharacterSpell {
+  id: number;
+  spell_id: number;
+  character_id?: number;
+  exhausted: number;
+  locked_until: string | null;
+  focus_active: number;
+  focus_started_at: string | null;
+  name: string;
+  class: "wizard" | "priest" | "both";
+  tier: number;
+  casting_stat: "INT" | "WIS";
+  duration: string;
+  range: string;
+  is_focus: number;
+  description: string;
+}
+
+export interface SpellCastResult {
+  rollId: number;
+  roll: number;
+  modifier: number;
+  total: number;
+  dc: number;
+  result: "success" | "failure" | "crit_success" | "crit_fail";
+  mishapResult: Record<string, unknown> | null;
+}
+
+export interface Condition {
+  id: number;
+  character_id: number;
+  name: string;
+  description: string;
+  rounds_remaining: number | null;
+  expires_at: string | null;
+}