Changelog

output.format on POST /image/generate now decides the encoding. Pass png, jpg, or webp and Mynth converts the image before delivering it. Leave it out and you get whatever the provider returned.

{
  "model": "black-forest-labs/flux.2-pro",
  "prompt": "A futuristic cityscape at sunset with flying cars",
  "output": { "format": "webp" }
}

Every successful image in the result now carries a format field, so you can read what was actually delivered instead of inferring it from the URL.

Two fields went away. output.quality is gone, and each format encodes at its own default. Per-image cost is gone from the result as well, so read the task-level cost instead.

Results also report magic_prompt again when magic prompt rewrites your prompt. It had been dropped from the payload.

Two new image analysis calls. review scores an image for quality issues, and alt writes short, descriptive alt text. Both work on any image, whether Mynth generated it or not.

import Mynth from "@mynthio/sdk";

const mynth = new Mynth();

const review = await mynth.image.review({ url: "https://..." });
const { alt } = await mynth.image.alt({ url: "https://..." });

Both are CLI commands too, mynth image review and mynth image alt. The SDK also ships webhook helpers for Next.js and TanStack Start.

mynth.image.rate and mynth.image.alt now take a single image instead of a batch. Calls that passed an array must make one call per image. The batched form is gone from the SDK and the CLI.

mynth destination and mynth webhook create, list, inspect, and remove both kinds of record from the terminal. Destinations are the storage targets Mynth delivers generated media to.

mynth balance prints your account balance. Generation commands can estimate the flat, published cost of a request before it runs. The CLI also exits with a distinct code per failure kind, so scripts and agents can branch on what went wrong.