diff --git a/agent/.env.example b/agent/.env.example
index c1ca87d..0f79308 100644
--- a/agent/.env.example
+++ b/agent/.env.example
@@ -3,4 +3,5 @@ LANGSMITH_TRACING=true
 LANGSMITH_API_KEY=123456
 LANGSMITH_ENDPOINT=https://eu.api.smith.langchain.com
 SCRAPER_INSTANCE=https://example.com
-SCRAPER_PARAM_ANYTHING=else
\ No newline at end of file
+SCRAPER_PARAM_ANYTHING=else
+RANKING_URL=http://localhost:8000/evaluate
\ No newline at end of file
diff --git a/agent/nodes/model.ts b/agent/nodes/model.ts
index 2370d34..74bdbe0 100644
--- a/agent/nodes/model.ts
+++ b/agent/nodes/model.ts
@@ -1,4 +1,4 @@
-import { HumanMessage, SystemMessage } from "@langchain/core/messages";
+import { SystemMessage } from "@langchain/core/messages";
 import { GraphNode } from "@langchain/langgraph";
 import { MessagesState } from "../state";
 import { ChatOllama } from "@langchain/ollama";
diff --git a/agent/tools/ensembleCall.ts b/agent/tools/ensembleCall.ts
index 112e1a3..77041db 100644
--- a/agent/tools/ensembleCall.ts
+++ b/agent/tools/ensembleCall.ts
@@ -7,7 +7,7 @@ export async function evaluateWithEnsemble({
   answer: string;
   method: string
 }): Promise<{ validProb: number; invalidProb: number; }> {
-  const res = await axios.post("http://localhost:8000/evaluate", {
+    const res = await axios.post(process.env.RANKING_URL ?? "http://localhost:8000/evaluate", {
     answer,
     method
   }, {timeout: 0});
@@ -18,11 +18,15 @@ export async function evaluateWithEnsemble({
   return {validProb, invalidProb};
 }
 
-// let res = await evaluateWithRoberta({answer: "High-profile political downplaying of COVID-19 (examples: President Trump saying 'it will go away' in March–August 2020)"});
+// import dotenv from "dotenv";
+
+// dotenv.config();
+
+// let res = await evaluateWithEnsemble({method:"flan" ,answer: "High-profile political downplaying of COVID-19 (examples: President Trump saying 'it will go away' in March–August 2020)"});
 // console.log(res)
 
-// res = await evaluateWithRoberta({answer: "Multiple mirrored reuploads (2020–2023) put the clip on other channels with titles implying it was a genuine 1970s public information film."});
+// res = await evaluateWithEnsemble({method:"roberta" ,answer: "Multiple mirrored reuploads (2020–2023) put the clip on other channels with titles implying it was a genuine 1970s public information film."});
 // console.log(res)
 
-// res = await evaluateWithRoberta({answer: "The COVID-19 Pandemic"});
+// res = await evaluateWithEnsemble({method:"logreg" ,answer: "The COVID-19 Pandemic"});
 // console.log(res)
\ No newline at end of file
diff --git a/agent/tools/ragasCall.ts b/agent/tools/ragasCall.ts
deleted file mode 100644
index c420f79..0000000
--- a/agent/tools/ragasCall.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import axios from "axios";
-
-export async function evaluateWithRagas({
-  question,
-  answer,
-  contexts,
-}: {
-  question: string;
-  answer: string;
-  contexts: string[];
-}) {
-  const res = await axios.post("http://localhost:8001/evaluate", {
-    question,
-    answer,
-    contexts,
-  });
-
-  return res.data;
-}
-
-// let res = await evaluateWithRagas({question: "Who was Bill Nye", answer: "Bill Nye was a Scientist", contexts: ["Bill nye was a Scientist"]});
-// console.log(res)
\ No newline at end of file