diff --git a/src/api/api.ts b/src/api/api.ts
new file mode 100644
index 0000000..2056e1a
--- /dev/null
+++ b/src/api/api.ts
@@ -0,0 +1,3 @@
+export { send } from "./base";
+
+export { UserApi } from "./user.ts";
diff --git a/src/api/base.ts b/src/api/base.ts
new file mode 100644
index 0000000..af2cd6a
--- /dev/null
+++ b/src/api/base.ts
@@ -0,0 +1,35 @@
+import axios from "axios";
+
+axios.defaults.baseURL =
+    process.env.NODE_ENV === "production"
+        ? "/api/v1"
+        : "http://127.0.0.1:8000/api/v1";
+
+export interface ResponseWrap<T> {
+    code: number;
+    msg: string;
+    body: T;
+}
+
+export interface Meta {
+    ID: number;
+    CreatedAt: number;
+    UpdatedAt: number;
+    DeletedAt: number;
+}
+
+export async function send<D, T>(
+    api: string,
+    data?: D,
+    token?: string,
+): Promise<T> {
+    try {
+        const resp = await axios.post<ResponseWrap<T>>(api, data, {
+            headers: { token: token },
+        });
+        if (resp.data.code !== 0) return Promise.reject(resp.data.msg);
+        return resp.data.body;
+    } catch (err) {
+        return Promise.reject(err);
+    }
+}
diff --git a/src/api/problem.ts b/src/api/problem.ts
new file mode 100644
index 0000000..4ff23a7
--- /dev/null
+++ b/src/api/problem.ts
@@ -0,0 +1,72 @@
+import { Meta, send } from "./base.ts";
+import { UserProfile } from "./user.ts";
+
+export interface TaskInfo {
+    Languages: { Lang: string }[];
+    Runtime: {
+        MemoryLimit: number;
+        NProcLimit: number;
+        TimeLimit: number;
+    };
+    Tasks: { Id: number; Points: number }[];
+}
+
+export interface ProblemInfo {
+    meta: Meta;
+    title: string;
+    statement: string;
+    provider: UserProfile;
+    is_enabled: boolean;
+}
+
+export interface CreateVersionReq {
+    pid: number;
+    storage_key: string;
+}
+
+export interface DetailsReq {
+    pid: number;
+}
+
+export interface DetailsResp {
+    context: TaskInfo;
+    problem: ProblemInfo;
+}
+
+export interface SearchReq {
+    search: string;
+}
+
+export interface UpdateReq {
+    pid: number;
+    title: string;
+    statement: string;
+    is_enabled: boolean;
+}
+
+export interface UploadResp {
+    key: string;
+    url: string;
+}
+
+export class ProblemApi {
+    async CreateVersion(data: CreateVersionReq, token: string): Promise<void> {
+        return send("/problem/create_version", data, token);
+    }
+
+    async Details(data: DetailsReq): Promise<DetailsResp> {
+        return send("/problem/details", data);
+    }
+
+    async Search(data: SearchReq): Promise<ProblemInfo[]> {
+        return send("/problem/search", data);
+    }
+
+    async Update(data: UpdateReq, token: string): Promise<ProblemInfo> {
+        return send("/problem/update", data, token);
+    }
+
+    async Upload(token: string): Promise<UploadResp> {
+        return send("/problem/upload", null, token);
+    }
+}
diff --git a/src/api/status.ts b/src/api/status.ts
new file mode 100644
index 0000000..358c863
--- /dev/null
+++ b/src/api/status.ts
@@ -0,0 +1,61 @@
+import { Meta, send } from "./base.ts";
+import { SubmissionInfo } from "./submission.ts";
+
+export enum Verdict {
+    Accepted,
+    WrongAnswer,
+    JuryFailed,
+    PartialCorrect,
+    TimeLimitExceeded,
+    MemoryLimitExceeded,
+    RuntimeError,
+    CompileError,
+    SystemError,
+}
+
+export interface TaskResultInfo {
+    id: number;
+    points: number;
+    real_time: number;
+    cpu_time: number;
+    memory: number;
+    verdict: Verdict;
+    message: string;
+}
+
+export interface ContextInfo {
+    message: string;
+    tasks: TaskResultInfo[];
+}
+
+export interface QueryReq {
+    sid: number;
+}
+
+export interface QueryByVersionReq {
+    pvid: number;
+    offset?: number;
+    limit: number;
+}
+
+export interface QueryResp {
+    meta: Meta;
+    submission: SubmissionInfo;
+    problem_version_id: number;
+    context: ContextInfo;
+    point: number;
+    is_enabled: boolean;
+}
+
+export class StatusApi {
+    async Query(data: QueryReq): Promise<QueryResp> {
+        return send("/status/query", data);
+    }
+
+    async QueryByVersion(
+        data: QueryByVersionReq,
+        token: string,
+    ): Promise<QueryResp[]> {
+        return send("/status/problem_version", data, token);
+    }
+}
diff --git a/src/api/submission.ts b/src/api/submission.ts
new file mode 100644
index 0000000..7197465
--- /dev/null
+++ b/src/api/submission.ts
@@ -0,0 +1,49 @@
+import { Meta, send } from "./base.ts";
+import { UserProfile } from "./user.ts";
+
+export interface SubmissionInfo {
+    meta: Meta;
+    problem_id: number;
+    user: UserProfile;
+    language: string;
+    code: string;
+}
+
+export interface SubmitReq {
+    pid: number;
+    language: string;
+    code: string;
+}
+
+export interface QueryReq {
+    pid?: number;
+    uid?: number;
+    offset?: number;
+    limit: number;
+}
+
+export interface QueryResp {
+    submission: SubmissionInfo;
+    point: number;
+}
+
+export interface ReJudgeReq {
+    sid: number;
+}
+
+export class SubmissionApi {
+    async Create(data: SubmitReq, token: string): Promise<void> {
+        return send("/submission/create", data, token);
+    }
+
+    async Query(data: QueryReq, token: string): Promise<QueryResp[]> {
+        if (!data.pid && !data.uid) {
+            throw new Error("Missing required fields");
+        }
+        return send("/submission/query", data, token);
+    }
+
+    async ReJudge(data: ReJudgeReq, token: string): Promise<void> {
+        return send("/submission/rejudge", data, token);
+    }
+}
diff --git a/src/api/user.ts b/src/api/user.ts
new file mode 100644
index 0000000..d384668
--- /dev/null
+++ b/src/api/user.ts
@@ -0,0 +1,40 @@
+import { Meta, send } from "./base.ts";
+
+export interface UserReq {
+    username?: string;
+    password?: string;
+    nickname?: string;
+    uid?: number;
+}
+
+export interface UserProfile {
+    meta: Meta;
+    user_name: string;
+    nick_name: string;
+    role: number;
+    is_enabled: boolean;
+}
+
+export class UserApi {
+    async Create(data: UserReq): Promise<string> {
+        if (!data.username || !data.password || !data.nickname) {
+            throw new Error("Missing required fields");
+        }
+        return send("/user/create", data);
+    }
+
+    async Login(data: UserReq): Promise<string> {
+        if (!data.username || !data.password) {
+            throw new Error("Missing required fields");
+        }
+        return send("/user/login", data);
+    }
+
+    async Logout(token: string): Promise<void> {
+        return send("/user/logout", null, token);
+    }
+
+    async Profile(data: UserReq, token: string): Promise<UserProfile> {
+        return send("/user/profile", data, token);
+    }
+}