app.bsky.graph.listitem validator
BlueSky list item and URI validator
Validate list AT URIs, DID subjects, and timestamps before a developer creates app.bsky.graph.listitem records for moderation, curation, reference, or discovery lists.
Validate listitem JSON
The Lexicon is strict: one listitem record points one DID subject to one app.bsky.graph.list AT URI. Handles must be resolved to DIDs before record creation.
2
DID subjects
1
handles to resolve
1
invalid inputs
OK
URI and time
Generated validation payload
{
"list": {
"uri": "at://did:plc:exampleworkspace123/app.bsky.graph.list/3listdemo",
"valid": true
},
"createdAt": "2026-06-21T22:26:16.909Z",
"listitemRecords": [
{
"$type": "app.bsky.graph.listitem",
"subject": "did:plc:ewvi7nxzyoun6zhxrhs64oiz",
"list": "at://did:plc:exampleworkspace123/app.bsky.graph.list/3listdemo",
"createdAt": "2026-06-21T22:26:16.909Z"
},
{
"$type": "app.bsky.graph.listitem",
"subject": "did:web:example.com",
"list": "at://did:plc:exampleworkspace123/app.bsky.graph.list/3listdemo",
"createdAt": "2026-06-21T22:26:16.909Z"
}
],
"handlesToResolveBeforeWrite": [
{
"handle": "atproto.com",
"resolver": "https://public.api.bsky.app/xrpc/com.atproto.identity.resolveHandle?handle=atproto.com",
"reason": "app.bsky.graph.listitem requires a DID subject, not a handle."
}
],
"invalidSubjects": [
"invalid subject"
]
}