> ## Documentation Index
> Fetch the complete documentation index at: https://veryfront.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Send run heartbeat

> Renew the execution lease of the current run generation.

`veryfront__create_run_heartbeat`

## Access

No external-service connection is required. Use a Veryfront credential with access to the requested resources.

**Call type:** Can change resources.

## Arguments

| Field | Type | Required | Description and constraints |
| - | - | - | - |
| `run_id` | `string` | Yes | Run identifier that scopes the request. Format: `uuid`. |
| `lease_duration_seconds` | `integer` | No | Provide the lease duration seconds. Default: `60`. Minimum: `5`. Maximum: `300`. |

## Example request

Send this JSON-RPC request through an initialized MCP client. Replace sample identifiers and values before calling the tool. See [MCP client setup](https://veryfront.com/docs/cloud/getting-started/connect-mcp.md).

```json title="request.json" theme={null}
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "veryfront__create_run_heartbeat",
    "arguments": {
      "run_id": "00000000-0000-4000-8000-000000000000"
    }
  }
}
```

## Result

The published output shape is summarized below. Inspect both the MCP response content and `isError` when handling a call.

| Field | Type | Required | Description and constraints |
| - | - | - | - |
| `run_id` | `string` | Yes | Run identifier associated with this result. Format: `uuid`. |
| `expires_at` | `string` | Yes | The expires at returned by the tool. Format: `date-time`. |

## Full schemas

```json title="input-schema.json" theme={null}
{
  "type": "object",
  "properties": {
    "run_id": {
      "type": "string",
      "format": "uuid",
      "description": "Run identifier that scopes the request."
    },
    "lease_duration_seconds": {
      "type": "integer",
      "minimum": 5,
      "maximum": 300,
      "default": 60,
      "description": "Provide the lease duration seconds."
    }
  },
  "required": [
    "run_id"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#",
  "description": "Arguments for the create_run_heartbeat tool."
}
```

```json title="output-schema.json" theme={null}
{
  "type": "object",
  "properties": {
    "run_id": {
      "type": "string",
      "format": "uuid",
      "description": "Run identifier associated with this result."
    },
    "expires_at": {
      "type": "string",
      "format": "date-time",
      "description": "The expires at returned by the tool."
    }
  },
  "required": [
    "run_id",
    "expires_at"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#",
  "description": "Structured result returned by the create_run_heartbeat tool."
}
```

<details>
  <summary>Try this tool</summary>

  Replace sample arguments with values for your project or connected account. Calls run only when you select Run tool.

  MCP tool call

  Call `veryfront__create_run_heartbeat` against the Veryfront MCP endpoint.

  Bearer token or API key

  Arguments (JSON)

  Run this tool with these arguments.

  Run tool

  Output JSON

  <pre />
</details>


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.