# WorkflowResumeHttpRequest

> Tracon documentation. Tracon is a .NET package family that adds a control
> plane on Microsoft Agent Framework, published as NuGet packages that run
> inside your own ASP.NET Core application.
>
> Page: https://tracon.dev/http-api/schemas/workflowresumehttprequest/
> Summary: OpenAPI request or response schema for WorkflowResumeHttpRequest, including required fields, defaults, constraints, and linked nested types.

[← All HTTP schemas](/http-api/schemas/)

Request to resume a workflow from a checkpoint.

**Shape:** `object`

| Property | Required | Type | Description | Rules |
|---|---|---|---|---|
| `checkpointId` | no | `string` | Identifier of the checkpoint to resume from. If left empty, the run's most recent checkpoint is used. | — |
| `definitionVersion` | no | `integer (int32)` | The version of the workflow's stored definition to resume with. Leave it out to resume with the version the run recorded, so an edit made while the run waited does not change what resumes. | pattern `^-?(?:0\\|[1-9]\d*)$` |