The launch.json standard

Publish a small, factual manifest at /.well-known/launch.json so launch directories can keep your listing fresh.

{
  "name": "Your product",
  "tagline": "One clear sentence",
  "description": "A factual product description.",
  "pricing": "freemium",
  "logo_url": "https://example.com/logo.svg",
  "changelog_url": "https://example.com/changelog"
}

Only HTTPS URLs are accepted. Keep fields current, avoid credentials, and return JSON with an application/json content type.