diff --git a/web-devtools/src/app/(main)/dispute-template/CustomContextInputs.tsx b/web-devtools/src/app/(main)/dispute-template/CustomContextInputs.tsx
new file mode 100644
index 000000000..5fdfbc414
--- /dev/null
+++ b/web-devtools/src/app/(main)/dispute-template/CustomContextInputs.tsx
@@ -0,0 +1,89 @@
+import retrieveVariables from "@kleros/kleros-sdk/src/dataMappings/utils/retrieveVariables";
+import { Field } from "@kleros/ui-components-library";
+import { useMemo, useState } from "react";
+import styled from "styled-components";
+import { useDebounce } from "react-use";
+import WithHelpTooltip from "components/WithHelpTooltip";
+
+const Container = styled.div`
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  margin-top: 32px;
+`;
+
+const Header = styled.h2`
+  margin: 0;
+`;
+
+const InputContainer = styled.div`
+  display: flex;
+  gap: 16px;
+  flex-wrap: wrap;
+`;
+const VariableName = styled.p`
+  font-family: "Roboto Mono", monospace;
+`;
+
+// prevent duplicating input fields
+const DisputeRequestParams = [
+  "arbitrator",
+  "arbitrable",
+  "arbitratorDisputeID",
+  "externalDisputeID",
+  "templateID",
+  "templateUri",
+];
+
+interface ICustomContextInputs {
+  dataMapping: string;
+  setCustomContext: (context: Record<string, string>) => void;
+}
+const CustomContextInputs: React.FC<ICustomContextInputs> = ({ dataMapping, setCustomContext }) => {
+  const [customContextInputs, setCustomContextInputs] = useState<Record<string, string>>();
+
+  const requiredVariables = useMemo(() => {
+    try {
+      return retrieveVariables(dataMapping);
+    } catch (error) {
+      console.error("Failed to parse dataMapping:", error);
+      return [];
+    }
+  }, [dataMapping]);
+
+  useDebounce(
+    () => {
+      if (!customContextInputs) return;
+      setCustomContext(customContextInputs);
+    },
+    300,
+    [customContextInputs]
+  );
+
+  return requiredVariables.length ? (
+    <Container>
+      <WithHelpTooltip tooltipMsg="These are additional variables required by the data mapping to be passed as initial context. Please ignore the variables that will come from the result of the preceeding data mappings">
+        <Header>Additional Context</Header>
+      </WithHelpTooltip>
+      {requiredVariables.map((variable, index) =>
+        DisputeRequestParams.includes(variable) ? null : (
+          <InputContainer key={`${variable}-${index}`}>
+            <VariableName>{variable}:</VariableName>
+            <Field
+              type="text"
+              name={variable}
+              value={customContextInputs?.[variable]}
+              onChange={(e) => {
+                setCustomContextInputs((prev) => ({ ...prev, [variable]: e.target.value }));
+              }}
+              placeholder="0x..."
+            />
+          </InputContainer>
+        )
+      )}
+    </Container>
+  ) : null;
+};
+
+export default CustomContextInputs;
diff --git a/web-devtools/src/app/(main)/dispute-template/FetchDisputeRequestInput.tsx b/web-devtools/src/app/(main)/dispute-template/FetchDisputeRequestInput.tsx
index 3347ca670..911a041e5 100644
--- a/web-devtools/src/app/(main)/dispute-template/FetchDisputeRequestInput.tsx
+++ b/web-devtools/src/app/(main)/dispute-template/FetchDisputeRequestInput.tsx
@@ -46,17 +46,17 @@ const StyledA = styled.a`
 const presets = [
   {
     title: "Escrow",
-    txnHash: "0x85e60cb407c9a38e625263cc762ff4283d01f38201825e1d20109d8664cfa7d4",
+    txnHash: "0x2565b756e500240544f7fc36f938462c7efbbd2e343c57979f81fecdf1054e23",
     chainId: 421614,
   },
   {
     title: "Curated Lists",
-    txnHash: "0x6e5ad6f7436ef8570b50b0fbec76a11ccedbed85030c670e59d8f6617a499108",
+    txnHash: "0xa7981830bf8144ab2070f3a639bd36b204c4c48ee1fafef66abaf60272418ed4",
     chainId: 421614,
   },
   {
-    title: "Trump-Biden",
-    txnHash: "0x9a3a420174f3c55c2b3eb2e77266777b74028b845e528a90142b5b57aafbdb90",
+    title: "Trump-Harris",
+    txnHash: "0x86db91678cf3f8c4503e37340cf2cd93bffcba84f9c43a98c090f6a4c76d8793",
     chainId: 421614,
   },
 ];
diff --git a/web-devtools/src/app/(main)/dispute-template/page.tsx b/web-devtools/src/app/(main)/dispute-template/page.tsx
index 4489fbe0f..ff9802520 100644
--- a/web-devtools/src/app/(main)/dispute-template/page.tsx
+++ b/web-devtools/src/app/(main)/dispute-template/page.tsx
@@ -25,6 +25,7 @@ import ReactMarkdown from "components/ReactMarkdown";
 
 import FetchDisputeRequestInput, { DisputeRequest } from "./FetchDisputeRequestInput";
 import FetchFromIDInput from "./FetchFromIdInput";
+import CustomContextInputs from "./CustomContextInputs";
 
 const Container = styled.div`
   height: auto;
@@ -105,6 +106,7 @@ const UpperContainer = styled.div`
     `
   )}
 `;
+
 const StyledForm = styled.form`
   display: flex;
   flex-direction: column;
@@ -150,6 +152,7 @@ const DisputeTemplateView = () => {
   const [disputeDetails, setDisputeDetails] = useState<DisputeDetails | undefined>(undefined);
   const [disputeTemplateInput, setDisputeTemplateInput] = useState<string>("");
   const [dataMappingsInput, setDataMappingsInput] = useState<string>("");
+  const [customContext, setCustomContext] = useState<Record<string, string>>();
 
   const [params, setParams] = useState<DisputeRequest>({
     _arbitrable: "0x10f7A6f42Af606553883415bc8862643A6e63fdA",
@@ -178,7 +181,7 @@ const DisputeTemplateView = () => {
         setLoading(true);
 
         setTimeout(() => {
-          const initialContext = {
+          let initialContext = {
             arbitrator: debouncedParams._arbitrator,
             arbitrable: debouncedParams._arbitrable,
             arbitratorDisputeID: debouncedParams._arbitratorDisputeID,
@@ -187,6 +190,8 @@ const DisputeTemplateView = () => {
             templateUri: debouncedParams._templateUri,
           };
 
+          if (customContext) initialContext = { ...initialContext, ...customContext };
+
           const fetchData = async () => {
             try {
               const data = dataMappingsInput ? await executeActions(JSON.parse(dataMappingsInput), initialContext) : {};
@@ -210,7 +215,7 @@ const DisputeTemplateView = () => {
     if (disputeTemplateInput || dataMappingsInput || debouncedParams) {
       scheduleFetchData();
     }
-  }, [disputeTemplateInput, dataMappingsInput, debouncedParams]);
+  }, [disputeTemplateInput, dataMappingsInput, debouncedParams, customContext]);
 
   return (
     <>
@@ -277,9 +282,12 @@ const DisputeTemplateView = () => {
               name="_templateUri"
               value={params._templateUri}
               onChange={handleFormUpdate}
-              placeholder="ipfs://... (optional)"
+              placeholder="/ipfs/... (optional)"
             />
           </StyledRow>
+          <StyledRow>
+            <CustomContextInputs dataMapping={dataMappingsInput} setCustomContext={setCustomContext} />
+          </StyledRow>
         </StyledForm>
         <div>
           <FetchFromIDInput
diff --git a/web-devtools/src/components/JSONEditor.tsx b/web-devtools/src/components/JSONEditor.tsx
index 5f19afdc4..e5e254fee 100644
--- a/web-devtools/src/components/JSONEditor.tsx
+++ b/web-devtools/src/components/JSONEditor.tsx
@@ -59,6 +59,6 @@ const JSONEditor = (props: any) => {
     }
   }, [props]);
 
-  return <Container ref={refContainer}></Container>;
+  return <Container ref={refContainer} className={props.className}></Container>;
 };
 export default JSONEditor;
diff --git a/web-devtools/tsconfig.json b/web-devtools/tsconfig.json
index f1f3ae56a..95fbe7e82 100644
--- a/web-devtools/tsconfig.json
+++ b/web-devtools/tsconfig.json
@@ -32,7 +32,6 @@
         "./*"
       ],
       "src*": [
-        "../../kleros-sdk/src/*",
         "./*"
       ],
       "svgs*": [