Switch from mailto to API key

app.py

@@ -173,7 +173,7 @@ def get_index(dir: Path, search_time_s: float) -> Dataset:
     return index
 
 
-def execute_request(ids: list[str], mailto: str | None) -> list[Work]:
+def execute_request(ids: list[str], api_key: str | None) -> list[Work]:
     if len(ids) > 100:
         raise ValueError("querying /works endpoint with more than 100 works")
 
@@ -181,8 +181,8 @@ def execute_request(ids: list[str], mailto: str | None) -> list[Work]:
     search_filter = f"openalex_id:{'|'.join(ids)}"
     search_select = ",".join(["id"] + Work.get_raw_fields())
     params = {"filter": search_filter, "select": search_select, "per-page": 100}
-    if mailto is not None:
-        params["mailto"] = mailto
+    if api_key is not None:
+        params["api_key"] = api_key
     response = requests.get("https://api.openalex.org/works", params)
     response.raise_for_status()
 
@@ -278,7 +278,7 @@ def main():
     repo = get_env_var("REPO", str)
     search_time_s = get_env_var("SEARCH_TIME_S", float, default=1)
     k = get_env_var("K", int, default=20)  # TODO: can't go higher than 20 yet
-    mailto = get_env_var("MAILTO", str, None)
+    api_key = get_env_var("API_KEY", str, None)
 
     if dir is None:  # acquire the index if it's not local
         if repo is None:
@@ -344,7 +344,7 @@ def main():
         distances, faiss_ids = index.search("embedding", query_embedding, k * 2)
 
         openalex_ids = index[faiss_ids]["id"]
-        works = execute_request(openalex_ids, mailto)
+        works = execute_request(openalex_ids, api_key)
 
         # TODO: Some IDs existed in OpenAlex v1 but not v2. Until the index is
         #       updated, query double the works and cut down to k (best-effort!).