# Cron Describe — REST API endpoint `cron-describe`

Parse a 5- or 6-field cron expression and produce a human-readable description.

- Category: datetime
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/cron-describe/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/api/cron-describe/
- Same tool on the other surface: https://findutils.com/mcp/cron-describe/

## Call the endpoint (verified example)

```bash
curl -X POST https://api.findutils.com/api/tools/cron-describe/execute \
  -H "Content-Type: application/json" \
  -d '{
    "expression": "*/15 * * * *"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/cron-describe
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `expression` | string | yes | Cron expression, e.g. "*/5 * * * *" or "0 0 12 * * *". |

Example arguments (verified):

```json
{
  "expression": "*/15 * * * *"
}
```

OpenAPI 3.1 spec: https://findutils.com/api/openapi.json · Interactive docs: https://findutils.com/api/docs/

## Also an MCP tool

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Then ask the client to call `findutils:cron_describe`. Full MCP reference: https://findutils.com/mcp/cron-describe/

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