An important exception to sandboxing is
recursion: access to
/content endpoint is permitted, allowing
inscriptions to access the content of other inscriptions by requesting
This has a number of interesting use-cases:
Remixing the content of existing inscriptions.
Publishing snippets of code, images, audio, or stylesheets as shared public resources.
Generative profile picture collections where accessories and attributes are inscribed as individual images, or in a shared texture atlas, and then combined, collage-style, in unique combinations in multiple inscriptions.
A few other endpoints that inscriptions may access are the following:
/blockheight: latest block height.
/blockhash: latest block hash.
/blockhash/<HEIGHT>: block hash at given block height.
/blocktime: UNIX time stamp of latest block.