This tool is part of the DAppNode Software Development Kit (dappnodesdk) and allows to sign DAppNode package release transactions with Metamask.
To generate a pre-filled URL with the parameters to publish a release transaction install @dappnode/dappnodesdk
Sample URL:
https://dappnode.github.io/sdk-publish/?r=dappnodesdk.public.dappnode.eth&v=0.1.0&h=%2Fipfs%2FQmeam6LUYonZxNuEa5uCKJmMasVSnnCf3wc7KzUuQBf2Fd&d=0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B
which has URL search params (URI encoded):
r: dappnodesdk.public.dappnode.eth
v: 0.1.0
h: /ipfs/Qmeam6LUYonZxNuEa5uCKJmMasVSnnCf3wc7KzUuQBf2Fd
d: 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B