> ## Documentation Index
> Fetch the complete documentation index at: https://upstash-worktree-docs-descriptions.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Start a Run

> Start an Upstash Workflow run with the recommended client.trigger method or a direct HTTP request, passing body, headers, retries, and more.

You’ve defined your workflow, and the final step is to trigger the endpoint!

There are two main ways to start your workflow:

### Using `client.trigger` (Recommended)

We recommend using [`client.trigger`](/workflow/basics/client/trigger) to start your workflow.

<CodeGroup>
  ```ts Single Workflow theme={"system"}
  import { Client } from "@upstash/workflow";

  const client = new Client({ token: "<QSTASH_TOKEN>" })
  const { workflowRunId } = await client.trigger({
    url: "https://<YOUR_WORKFLOW_ENDPOINT>/<YOUR-WORKFLOW-ROUTE>",
    body: "hello there!",         // optional body
    headers: { ... },             // optional headers
    workflowRunId: "my-workflow", // optional workflow run id
    retries: 3                    // optional retries in the initial request
    delay: "10s"                  // optional delay value
    failureUrl: "https://<YOUR_FAILURE_URL>", // optional failure url
    flowControl: { ... }          // optional flow control
  })

  console.log(workflowRunId)
  // prints wfr_my-workflow
  ```

  ```ts Multiple Workflows theme={"system"}
  import { Client } from "@upstash/workflow";

  const client = new Client({ token: "<QSTASH_TOKEN>" })
  const results = await client.trigger([
    {
      url: "<YOUR_WORKFLOW_ENDPOINT>",
      // other options...
    },
    {
      url: "<YOUR_WORKFLOW_ENDPOINT>",
      // other options...
    },
  ])

  console.log(results[0].workflowRunId)
  // prints wfr_my-workflow
  ```
</CodeGroup>

### 2. Sending an HTTP Request

This approach is recommended for quick testing via curl during development.

You should **NOT** start the workflow run in production by direct calls to your endpoint.

```bash theme={"system"}
curl -X POST https://<YOUR_WORKFLOW_ENDPOINT>/<YOUR-WORKFLOW-ROUTE> \
   -H "my-header: foo" \
   -d '{"foo": "bar"}'
```

<Warning>
  If you’ve secured your endpoint with signing keys, only the `trigger` method will work. Direct calls to the endpoint (e.g., via `curl` or `fetch`) will not be possible since `Upstash-Signature` header is missing.

  For more information, read [Secure a workflow](/workflow/howto/security) documentation.
</Warning>