diff --git a/insta-lab/app/main.py b/insta-lab/app/main.py
new file mode 100644
index 0000000..fe0ef80
--- /dev/null
+++ b/insta-lab/app/main.py
@@ -0,0 +1,245 @@
+"""FastAPI entrypoint for insta-lab."""
+
+import asyncio
+import json
+import logging
+import os
+from typing import Optional
+
+from fastapi import FastAPI, HTTPException, BackgroundTasks, Body, Query
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import FileResponse
+from pydantic import BaseModel
+
+from .config import (
+    CORS_ALLOW_ORIGINS, NAVER_CLIENT_ID, ANTHROPIC_API_KEY,
+    INSTA_DATA_PATH, DB_PATH, DEFAULT_CATEGORY_SEEDS, KEYWORDS_PER_CATEGORY,
+)
+from . import db, news_collector, keyword_extractor, card_writer, card_renderer
+
+logger = logging.getLogger(__name__)
+app = FastAPI()
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[o.strip() for o in CORS_ALLOW_ORIGINS.split(",")],
+    allow_credentials=False,
+    allow_methods=["GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH"],
+    allow_headers=["Content-Type"],
+)
+
+
+@app.on_event("startup")
+def on_startup():
+    os.makedirs(INSTA_DATA_PATH, exist_ok=True)
+    db.init_db()
+
+
+@app.get("/health")
+def health():
+    return {"ok": True}
+
+
+@app.get("/api/insta/status")
+def status():
+    return {
+        "ok": True,
+        "naver_api": bool(NAVER_CLIENT_ID),
+        "anthropic_api": bool(ANTHROPIC_API_KEY),
+    }
+
+
+# ── News ─────────────────────────────────────────────────────────
+class CollectRequest(BaseModel):
+    categories: Optional[list[str]] = None
+
+
+def _seeds_for(category: str) -> list[str]:
+    pt = db.get_prompt_template("category_seeds")
+    if pt and pt.get("template"):
+        try:
+            data = json.loads(pt["template"])
+            if category in data:
+                return list(data[category])
+        except Exception:
+            pass
+    return list(DEFAULT_CATEGORY_SEEDS.get(category, []))
+
+
+async def _bg_collect(task_id: str, categories: list[str]):
+    try:
+        db.update_task(task_id, "processing", 10, "수집 중")
+        total = 0
+        for cat in categories:
+            seeds = _seeds_for(cat)
+            if not seeds:
+                continue
+            total += news_collector.collect_for_category(cat, seeds)
+        db.update_task(task_id, "succeeded", 100, f"{total}건 수집", result_id=total)
+    except Exception as e:
+        logger.exception("collect failed")
+        db.update_task(task_id, "failed", 0, "", error=str(e))
+
+
+@app.post("/api/insta/news/collect")
+def collect_news(req: CollectRequest, bg: BackgroundTasks):
+    cats = req.categories or list(DEFAULT_CATEGORY_SEEDS.keys())
+    tid = db.create_task("news_collect", {"categories": cats})
+    bg.add_task(_bg_collect, tid, cats)
+    return {"task_id": tid, "categories": cats}
+
+
+@app.get("/api/insta/news/articles")
+def list_articles(category: Optional[str] = None, days: int = Query(7, ge=1, le=90)):
+    return {"items": db.list_news_articles(category=category, days=days)}
+
+
+# ── Keywords ─────────────────────────────────────────────────────
+class ExtractRequest(BaseModel):
+    categories: Optional[list[str]] = None
+
+
+async def _bg_extract(task_id: str, categories: list[str]):
+    try:
+        db.update_task(task_id, "processing", 10, "추출 중")
+        for cat in categories:
+            keyword_extractor.extract_for_category(cat, limit=KEYWORDS_PER_CATEGORY)
+        db.update_task(task_id, "succeeded", 100, "완료", result_id=0)
+    except Exception as e:
+        logger.exception("extract failed")
+        db.update_task(task_id, "failed", 0, "", error=str(e))
+
+
+@app.post("/api/insta/keywords/extract")
+def extract_keywords(req: ExtractRequest, bg: BackgroundTasks):
+    cats = req.categories or list(DEFAULT_CATEGORY_SEEDS.keys())
+    tid = db.create_task("keyword_extract", {"categories": cats})
+    bg.add_task(_bg_extract, tid, cats)
+    return {"task_id": tid, "categories": cats}
+
+
+@app.get("/api/insta/keywords")
+def list_keywords(category: Optional[str] = None, used: Optional[bool] = None):
+    return {"items": db.list_trending_keywords(category=category, used=used)}
+
+
+# ── Slates ───────────────────────────────────────────────────────
+class SlateRequest(BaseModel):
+    keyword: str
+    category: str
+    keyword_id: Optional[int] = None
+
+
+async def _bg_create_slate(task_id: str, keyword: str, category: str, keyword_id: Optional[int]):
+    try:
+        db.update_task(task_id, "processing", 30, "카피 생성 중")
+        sid = card_writer.write_slate(keyword=keyword, category=category)
+        db.update_task(task_id, "processing", 70, "카드 렌더 중")
+        await card_renderer.render_slate(sid)
+        db.update_slate_status(sid, "rendered")
+        if keyword_id:
+            db.mark_keyword_used(keyword_id)
+        db.update_task(task_id, "succeeded", 100, "완료", result_id=sid)
+    except Exception as e:
+        logger.exception("create slate failed")
+        db.update_task(task_id, "failed", 0, "", error=str(e))
+
+
+@app.post("/api/insta/slates")
+def create_slate(req: SlateRequest, bg: BackgroundTasks):
+    tid = db.create_task("slate_create", req.dict())
+    bg.add_task(_bg_create_slate, tid, req.keyword, req.category, req.keyword_id)
+    return {"task_id": tid}
+
+
+@app.get("/api/insta/slates")
+def list_slates(limit: int = Query(50, ge=1, le=500)):
+    return {"items": db.list_card_slates(limit=limit)}
+
+
+@app.get("/api/insta/slates/{slate_id}")
+def get_slate(slate_id: int):
+    s = db.get_card_slate(slate_id)
+    if not s:
+        raise HTTPException(404, "slate not found")
+    s["assets"] = db.list_card_assets(slate_id)
+    for k in ("cover_copy", "body_copies", "cta_copy", "hashtags"):
+        if isinstance(s.get(k), str):
+            try:
+                s[k] = json.loads(s[k])
+            except Exception:
+                pass
+    return s
+
+
+async def _bg_render(task_id: str, slate_id: int):
+    try:
+        db.update_task(task_id, "processing", 30, "재렌더 중")
+        await card_renderer.render_slate(slate_id)
+        db.update_slate_status(slate_id, "rendered")
+        db.update_task(task_id, "succeeded", 100, "완료", result_id=slate_id)
+    except Exception as e:
+        logger.exception("render failed")
+        db.update_task(task_id, "failed", 0, "", error=str(e))
+
+
+@app.post("/api/insta/slates/{slate_id}/render")
+def render_slate_endpoint(slate_id: int, bg: BackgroundTasks):
+    if not db.get_card_slate(slate_id):
+        raise HTTPException(404, "slate not found")
+    tid = db.create_task("slate_render", {"slate_id": slate_id})
+    bg.add_task(_bg_render, tid, slate_id)
+    return {"task_id": tid}
+
+
+@app.get("/api/insta/slates/{slate_id}/assets/{page}")
+def get_asset(slate_id: int, page: int):
+    if not (1 <= page <= 10):
+        raise HTTPException(400, "page must be 1..10")
+    assets = db.list_card_assets(slate_id)
+    match = next((a for a in assets if a["page_index"] == page), None)
+    if not match:
+        raise HTTPException(404, "asset not found")
+    return FileResponse(match["file_path"], media_type="image/png")
+
+
+@app.delete("/api/insta/slates/{slate_id}")
+def delete_slate(slate_id: int):
+    if not db.get_card_slate(slate_id):
+        raise HTTPException(404)
+    for a in db.list_card_assets(slate_id):
+        try:
+            os.unlink(a["file_path"])
+        except OSError:
+            pass
+    db.delete_card_slate(slate_id)
+    return {"ok": True}
+
+
+# ── Tasks ────────────────────────────────────────────────────────
+@app.get("/api/insta/tasks/{task_id}")
+def get_task_status(task_id: str):
+    t = db.get_task(task_id)
+    if not t:
+        raise HTTPException(404)
+    return t
+
+
+# ── Prompt Templates ─────────────────────────────────────────────
+class TemplateBody(BaseModel):
+    template: str
+    description: str = ""
+
+
+@app.get("/api/insta/templates/prompts/{name}")
+def get_prompt(name: str):
+    pt = db.get_prompt_template(name)
+    if not pt:
+        raise HTTPException(404)
+    return pt
+
+
+@app.put("/api/insta/templates/prompts/{name}")
+def upsert_prompt(name: str, body: TemplateBody):
+    db.upsert_prompt_template(name, body.template, body.description)
+    return db.get_prompt_template(name)
diff --git a/insta-lab/tests/test_main.py b/insta-lab/tests/test_main.py
new file mode 100644
index 0000000..7ae31ce
--- /dev/null
+++ b/insta-lab/tests/test_main.py
@@ -0,0 +1,91 @@
+import os
+import tempfile
+
+import pytest
+from fastapi.testclient import TestClient
+
+from app import db as db_module
+
+
+@pytest.fixture
+def client(monkeypatch):
+    fd, path = tempfile.mkstemp(suffix=".db")
+    os.close(fd)
+    monkeypatch.setattr(db_module, "DB_PATH", path)
+    db_module.init_db()
+    from app import main
+    monkeypatch.setattr(main, "DB_PATH", path)
+    with TestClient(main.app) as c:
+        yield c
+    import gc
+    gc.collect()
+    for ext in ("", "-wal", "-shm"):
+        try:
+            os.remove(path + ext)
+        except OSError:
+            pass
+
+
+def test_health(client):
+    resp = client.get("/health")
+    assert resp.status_code == 200
+    assert resp.json()["ok"] is True
+
+
+def test_status_endpoint(client):
+    resp = client.get("/api/insta/status")
+    assert resp.status_code == 200
+    j = resp.json()
+    assert "naver_api" in j and "anthropic_api" in j
+
+
+def test_news_articles_listing(client):
+    db_module.add_news_article({
+        "category": "economy", "title": "T1", "link": "https://x/1", "summary": "S",
+    })
+    resp = client.get("/api/insta/news/articles?category=economy&days=7")
+    assert resp.status_code == 200
+    assert len(resp.json()["items"]) == 1
+
+
+def test_keywords_listing(client):
+    db_module.add_trending_keyword({
+        "keyword": "K", "category": "economy", "score": 0.5, "articles_count": 3,
+    })
+    resp = client.get("/api/insta/keywords?category=economy")
+    assert resp.status_code == 200
+    assert resp.json()["items"][0]["keyword"] == "K"
+
+
+def test_create_slate_kicks_background_task(client, monkeypatch):
+    from app import main, card_writer, card_renderer
+
+    def fake_write(keyword, category, articles=None):
+        return db_module.add_card_slate({
+            "keyword": keyword, "category": category, "status": "draft",
+            "cover_copy": {"headline": "H", "body": "B", "accent_color": "#000"},
+            "body_copies": [{"headline": f"h{i}", "body": f"b{i}"} for i in range(8)],
+            "cta_copy": {"headline": "C", "body": "B", "cta": "F"},
+        })
+
+    async def fake_render(slate_id, template="default/card.html.j2"):
+        for i in range(1, 11):
+            db_module.add_card_asset(slate_id, i, f"/tmp/{slate_id}_{i}.png", "h")
+        return [f"/tmp/{slate_id}_{i}.png" for i in range(1, 11)]
+
+    monkeypatch.setattr(card_writer, "write_slate", fake_write)
+    monkeypatch.setattr(card_renderer, "render_slate", fake_render)
+
+    resp = client.post("/api/insta/slates", json={"keyword": "K", "category": "economy"})
+    assert resp.status_code == 200
+    task_id = resp.json()["task_id"]
+    # poll task
+    for _ in range(20):
+        st = client.get(f"/api/insta/tasks/{task_id}").json()
+        if st["status"] in ("succeeded", "failed"):
+            break
+    assert st["status"] == "succeeded"
+    slate_id = st["result_id"]
+    detail = client.get(f"/api/insta/slates/{slate_id}").json()
+    assert detail["status"] == "rendered"
+    assert len(detail["assets"]) == 10