Nano Banana 2 Polza MCP Server

Fetch a Polza media generation by id

fetch_generation

Read-only

Retrieve completed image generation results by media_id. Optionally downloads the asset to a specified path.

TableJSON Schema

Name	Required	Description
`media_id`	Yes	Polza generation id (e.g. 'gen_2158264963618050049'). Returned by the Polza API when an `images/generations` or `/v1/media` call switches to async mode or when the MCP client times out waiting for a synchronous response.
`output_path`	No	Where to save the downloaded asset(s). If a file path with an extension is provided, saves the first asset there. If a directory is provided, saves using '<media_id>_<index>.<ext>'. If omitted, saves into IMAGE_OUTPUT_DIR.
`wait`	No	If true (default), polls until the generation reports 'completed' or 'failed', respecting POLZA_POLL_TIMEOUT_SECONDS. If false, returns the raw status without downloading.

D1/5.0

Behavior1/5

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Completeness1/5

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Parameters1/5

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Purpose1/5

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Usage Guidelines1/5

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