> For the complete documentation index, see [llms.txt](https://docs.trustlesswork.com/trustless-work/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.trustlesswork.com/trustless-work/api-rest/deploy/change-milestone-status.md).

# Change Milestone Status

Responsible for changing the milestone status of an escrow through the service provider.

### **Headers**

<table><thead><tr><th width="366">Name</th><th>Value</th></tr></thead><tbody><tr><td>Content-Type</td><td><code>application/json</code></td></tr><tr><td>x-api-key</td><td><code>&#x3C;token></code></td></tr></tbody></table>

### Open API

## POST /escrow/single-release/change-milestone-status

>

```json
{"openapi":"3.0.0","info":{"title":"Trustless Work API","version":"1.0"},"security":[{}],"paths":{"/escrow/single-release/change-milestone-status":{"post":{"operationId":"SingleReleaseController_changeMilestoneStatus","parameters":[],"requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ChangeMilestoneStatus"}}}},"responses":{"201":{"description":"This endpoint returns an unsigned transaction in XDR format. This XDR is then used to sign the transaction using the “/helper/send-transaction” endpoint.","content":{"application/json":{}}},"400":{"description":"Bad request"},"401":{"description":"Unauthorized access"},"429":{"description":"Too Many Requests"},"500":{"description":"Possible errors:\n- Escrow not found\n- Only the service provider can change milestone status\n- Invalid milestone index\n- Escrow initialized without milestone\n- An unexpected error occurred","content":{"application/json":{}}}},"tags":["Single Release"]}}},"components":{"schemas":{"ChangeMilestoneStatus":{"type":"object","properties":{"contractId":{"type":"string","description":"ID (address) that identifies the escrow contract"},"milestoneIndex":{"type":"string","description":"milestone within the group of milestones in the escrow"},"newEvidence":{"type":"string","description":"New value for the evidence property within the escrow milestone"},"newStatus":{"type":"string","description":"New value for the status property within the escrow milestone"},"serviceProvider":{"type":"string","description":"Address of the entity providing the service"}},"required":["contractId","milestoneIndex","newEvidence","newStatus","serviceProvider"]}}}}
```

<figure><img src="https://2074000817-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDg2e2YCRmNlhCnxxmEb6%2Fuploads%2FYJDINmRt4phkzMr6Qj16%2FScreenshot%202025-11-27%20at%203.28.21%E2%80%AFPM.png?alt=media&amp;token=5b728ffb-39a1-4603-9c1a-45f73da51391" alt=""><figcaption></figcaption></figure>

### **What this Endpoint returns?**

This endpoint returns the transaction unsigned so that the transaction can be signed by means of a customer wallet.

### **Use example:**

```javascript
import axios from "axios";

const http = axios.create({
  baseURL: "https://dev.api.trustlesswork.com",
  timeout: 10000,
  headers: {
    "Content-Type": "application/json",
    "x-api-key": your_api_key,
  },
});

export const useExample = async () => {
    // Get the signer address
    const { address } = await kit.getAddress();

    const response = await http.post(
      "/escrow/single-release/change-milestone-status",
      {
        // body requested for the endpoint
      },
    ); 
    
    // Get the unsigned transaction hash
    const { unsignedTransaction } = response.data;

    // Sign the transaction by wallet
    const { signedTxXdr } = await signTransaction(unsignedTransaction, {
      address,
      networkPassphrase: WalletNetwork.TESTNET,
    });

    // Send the transaction to Stellar Network
    const tx = await http.post("/helper/send-transaction", {
      signedXdr: signedTxXdr,
    });

    const { data } = tx;

    return data;
}
```


---

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