Reference

Usage

seed <generator> [count] [flags]

count is an optional integer. Without it, seed outputs one value.

Generator	Example output
`filename`	`report_final.pdf`
`extension`	`pdf`
`mimetype`	`application/pdf`
`filepath`	`/home/user/documents/report.pdf`

Flag	Description
`--plain`	Plain text output, one value per line (default)
`--json`	JSON array output
`--csv`	CSV with header row
`--tsv`	TSV (tab-separated values)
`--seed=N`	Set random seed for reproducible output
`--locale=XX_XX`	Locale for localized generators (e.g. `de_DE`, `fr_FR`)

seed new launches an interactive schema builder:

seed new

The wizard prompts for field names and generator types, then saves a seed_schema.json file. Run a saved schema with:

seed run seed_schema.json

Schemas produce multi-field structured records. The seed_cart feature generates nested JSON for complex record types.

Start the MCP server:

seed mcp

Claude Desktop configuration (~/.config/claude/claude_desktop_config.json):

{
  "mcpServers": {
    "seed": {
      "command": "seed",
      "args": ["mcp"]
    }
  }
}

Once configured, all 37 generators are available as MCP tools inside Claude Desktop and any other MCP-compatible client.