diff --git a/agentic_index_cli/agentic_index.py b/agentic_index_cli/agentic_index.py
index fd0fbca..e3c944c 100644
--- a/agentic_index_cli/agentic_index.py
+++ b/agentic_index_cli/agentic_index.py
@@ -5,6 +5,7 @@
 import os
 import sys
 import time
+from concurrent.futures import ThreadPoolExecutor
 from datetime import datetime, timedelta
 from pathlib import Path
 from typing import Dict, List, Optional
@@ -44,14 +45,18 @@
     "agpl-2.0",
 }
 
+# cache for GitHub license texts to avoid repeated downloads
+LICENSE_CACHE: dict[str, str] = {}
 
-def github_search(query: str, page: int = 1) -> List[Dict]:
+
+def github_search(query: str, page: int = 1, per_page: int = 100) -> List[Dict]:
+    """Search GitHub repositories with batching support."""
     time.sleep(1)  # rate limiting
     params = {
         "q": query,
         "sort": "stars",
         "order": "desc",
-        "per_page": 5,
+        "per_page": per_page,
         "page": page,
     }
     resp = requests.get(f"{GITHUB_API}/search/repositories", params=params, headers=HEADERS)
@@ -83,6 +88,25 @@ def fetch_readme(full_name: str) -> str:
     return ""
 
 
+def fetch_license_text(url: str) -> str:
+    """Fetch and cache license body text."""
+    if not url:
+        return ""
+    if url in LICENSE_CACHE:
+        return LICENSE_CACHE[url]
+    resp = requests.get(url, headers=HEADERS)
+    if resp.status_code != 200:
+        LICENSE_CACHE[url] = ""
+        return ""
+    data = resp.json()
+    text = data.get("body", "")
+    if not text and "content" in data:
+        import base64
+        text = base64.b64decode(data["content"]).decode("utf-8", errors="ignore")
+    LICENSE_CACHE[url] = text
+    return text
+
+
 def compute_recency_factor(pushed_at: str) -> float:
     pushed_date = datetime.strptime(pushed_at, "%Y-%m-%dT%H:%M:%SZ")
     days = (datetime.utcnow() - pushed_date).days
@@ -167,6 +191,9 @@ def harvest_repo(full_name: str) -> Optional[Dict]:
     if not repo:
         return None
     readme = fetch_readme(full_name)
+    license_url = (repo.get("license") or {}).get("url")
+    if license_url:
+        fetch_license_text(license_url)
     score = compute_score(repo, readme)
     category = categorize(repo.get("description", ""), repo.get("topics", []))
     first_paragraph = readme.split("\n\n")[0][:200]
@@ -188,34 +215,37 @@ def harvest_repo(full_name: str) -> Optional[Dict]:
     }
 
 
-def search_and_harvest(min_stars: int = 0, max_pages: int = 1) -> List[Dict]:
-    seen = set()
-    results = []
+def search_and_harvest(
+    min_stars: int = 0, max_pages: int = 1, workers: int = 8
+) -> List[Dict]:
+    """Search GitHub and harvest repo metadata concurrently."""
+    seen: set[str] = set()
+    names: list[str] = []
     for term in SEARCH_TERMS:
         for page in range(1, max_pages + 1):
             query = f"{term} stars:>={min_stars}"
-            repos = github_search(query, page)
+            repos = github_search(query, page, per_page=100)
             for repo in repos:
                 full_name = repo["full_name"]
                 if full_name in seen:
                     continue
                 seen.add(full_name)
-                meta = harvest_repo(full_name)
-                if meta:
-                    results.append(meta)
-    # Topic filter
+                names.append(full_name)
     for topic in TOPIC_FILTERS:
         for page in range(1, max_pages + 1):
             query = f"topic:{topic} stars:>={min_stars}"
-            repos = github_search(query, page)
+            repos = github_search(query, page, per_page=100)
             for repo in repos:
                 full_name = repo["full_name"]
                 if full_name in seen:
                     continue
                 seen.add(full_name)
-                meta = harvest_repo(full_name)
-                if meta:
-                    results.append(meta)
+                names.append(full_name)
+    results: list[dict] = []
+    with ThreadPoolExecutor(max_workers=workers) as ex:
+        for meta in ex.map(harvest_repo, names):
+            if meta:
+                results.append(meta)
     return results
 
 
diff --git a/bench/benchmark.py b/bench/benchmark.py
new file mode 100644
index 0000000..4bbd292
--- /dev/null
+++ b/bench/benchmark.py
@@ -0,0 +1,65 @@
+import json
+import os
+import tempfile
+import timeit
+from pathlib import Path
+
+import responses
+
+from agentic_index_cli.internal import scrape, rank
+
+
+def _make_items(start: int, count: int) -> list[dict]:
+    items = []
+    for i in range(start, start + count):
+        items.append(
+            {
+                "name": f"repo{i}",
+                "full_name": f"owner/repo{i}",
+                "html_url": f"https://example.com/repo{i}",
+                "description": "benchmark repo",
+                "stargazers_count": i,
+                "forks_count": 0,
+                "open_issues_count": 0,
+                "archived": False,
+                "license": {"spdx_id": "MIT"},
+                "language": "Python",
+                "pushed_at": "2025-01-01T00:00:00Z",
+                "owner": {"login": "owner"},
+            }
+        )
+    return items
+
+
+def run() -> bool:
+    with tempfile.TemporaryDirectory() as td:
+        repo_path = Path(td) / "repos.json"
+        with responses.RequestsMock() as rsps:
+            per_query = 500 // len(scrape.QUERIES)
+            idx = 0
+            for _ in scrape.QUERIES:
+                items = _make_items(idx, per_query)
+                idx += per_query
+                rsps.add(
+                    responses.GET,
+                    "https://api.github.com/search/repositories",
+                    json={"items": items},
+                    headers={"X-RateLimit-Remaining": "99"},
+                    match_querystring=False,
+                    status=200,
+                )
+            repos = scrape.scrape(min_stars=0, token=None)
+        repo_path.write_text(json.dumps(repos))
+        env = os.environ.copy()
+        env["PYTEST_CURRENT_TEST"] = "benchmark"
+        rank.main(str(repo_path))
+    return repo_path.exists()
+
+
+def main() -> None:
+    duration = timeit.timeit(run, number=1)
+    print(f"Pipeline completed in {duration:.2f}s")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/bench/profile.py b/bench/profile.py
new file mode 100644
index 0000000..1d69701
--- /dev/null
+++ b/bench/profile.py
@@ -0,0 +1,24 @@
+import cProfile
+from pathlib import Path
+
+from bench.benchmark import run
+
+
+def main() -> None:
+    prof = cProfile.Profile()
+    prof.enable()
+    run()
+    prof.disable()
+    out = Path("bench/profile.prof")
+    out.parent.mkdir(exist_ok=True)
+    prof.dump_stats(str(out))
+    print(f"Profile written to {out}")
+    try:
+        import snakeviz
+        snakeviz.main([str(out)])
+    except Exception as exc:
+        print(f"snakeviz failed: {exc}")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/requirements.txt b/requirements.txt
index cb384e6..a23a712 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ hypothesis
 requests
 PyYAML
 pytest-socket
-responses
\ No newline at end of file
+responses
+pytest-benchmark
diff --git a/tests/test_perf.py b/tests/test_perf.py
new file mode 100644
index 0000000..e4596b7
--- /dev/null
+++ b/tests/test_perf.py
@@ -0,0 +1,11 @@
+import os
+import pytest
+
+from bench import benchmark as bench_module
+
+pytestmark = pytest.mark.skipif(os.getenv("PERF") != "true", reason="perf tests disabled")
+
+
+@pytest.mark.benchmark
+def test_scrape_rank_benchmark(benchmark):
+    benchmark(bench_module.run)