# SpiceDB integration
Also look at [the proposal notes at the repo root](/proposal.md) (no pun intended)
## at-uri & content addressing
To support spaces, we extend at-uris with a query parameter `at://...?space=<rkey>`.
- the space is the parent, root is the unspecified or implied
- every acct has a `did/root` space, then can nest as many as they like
- `at://did/com.atproto.space.space/root`
- `spice://did/space`
- two-way conversion for spicedb allowed chars (not seen in demo)
- at-uri: `at://did/nsid/rkey?space=<space>`,
- spicedb: `type:did/space/nsid/rkey`
- similar content-path specificity [acct->space->collection->record]
- in `demo` we simplify various identifiers for legiblity
## schema
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