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+# Using MCP Inspector with Default StepZen MCP Server
+
+This guide explains how to modify the **MCP Inspector** code and use it to connect to a **StepZen MCP server** that is created for a Stepzen endpoint.
+
+## 1. Clone and Install MCP Inspector
+
+```
+git clone https://github.com/modelcontextprotocol/inspector.git
+cd inspector
+npm install
+```
+
+## 2. Modify Inspector for StepZen Authentication
+
+StepZen expects the API key *without* a `Bearer ` prefix in the authentication header. By default, MCP Inspector prepends `Bearer `, so you need to edit the code:
+
+- **File:** `client/src/lib/hooks/useConnection.ts`
+- **Find:**
+```
+headers[authHeaderName] = `Bearer ${token}`;
+```
+
+- **Replace with:**
+```
+
+// Use token as-is without adding "Bearer " prefix
+headers[authHeaderName] = token;
+
+```
+This ensures the API key is sent exactly as StepZen expects.
+
+
+## 3. Start MCP Inspector
+
+```
+npm start
+```
+The Inspector UI will be running on local host and requires a session token that is provided as output of the above command.  Should look something line `http://localhost:6274/?MCP_PROXY_AUTH_TOKEN=`<Session Token>.
+
+## 4. Create a StepZen endpoint
+For demonstration purposes, we will create and deploy an endpoint with the `Starwars` schema.
+
+Create a starwars folder:
+```
+mkdir starwars
+cd starwars
+```
+
+Import the starwars schema: 
+```
+stepzen import graphql https://stepzen-chester.us-east-a.ibm.stepzen.net/examples/starwars/graphql
+```
+Call it `api/starwars`.
+
+Deploy the imported schema:
+```
+stepzen deploy
+```
+
+It will deploy to an endpoint such as:
+```
+https://<userid>.<region>.ibm.stepzen.net/api/starwars/__graphql
+```
+
+Your MCP server will be 
+```
+https://<userid>.<region>.ibm.stepzen.net/api/starwars/mcp
+```
+
+## 4. Connect to StepZen MCP Server
+
+- In the Inspector UI, click **▶︎ Connect**.
+- **URL:** Enter your StepZen MCP endpoint (e.g., `https://<userid>.<region>.ibm.stepzen.net/api/starwars/mcp
+`).
+- **Transport Type:** Select **streamable-http**.
+- **Authentication:** Enter your API key with the value returned from:
+```
+echo "apikey $(stepzen whoami --apikey)"
+```
+
+- **Query Editing:** If the query box seems uneditable, try clicking at the start of the field to begin typing.
+- **Operation Name/Variables:** These can be left empty; just enter your GraphQL query in the **query** field. Here's an example:
+
+```
+query hero {
+  hero {
+    appearsIn
+    friends {
+      appearsIn
+      id
+      name
+    }
+    id
+    name
+  }
+}
+```
+
+Click `Run-tool`.
+