A message from Alex
Alex sent you a message on iMessage. The MessageAction and the Message are keyed by iMessage's own ID for the message, its source and sourceId.
Alex is keyed twice. The first key is a handle in the icloud source. The second, through sameAs, is Alex's email address in the email namespace. That key doesn't belong to iMessage: any source that knows Alex's email address can use the same key.
{
"@type": "MessageAction",
"@key": ["@type", "source", "sourceId"],
"source": "imessage",
"sourceId": "9B1C5E2A-7F43-4D8E-A6B0-3C2F9E14D7A5",
"timestamp": "2026-05-09T18:22:07.000Z",
"agent": {
"@type": "Agent",
"@key": ["@type", "source", "handle"],
"source": "icloud",
"handle": "alex@example.com",
"name": "Alex Chen",
"sameAs": [
{
"@type": "Agent",
"@key": ["@type", "source", "handle"],
"source": "email",
"handle": "alex@example.com"
}
]
},
"object": {
"@type": "Message",
"@key": ["@type", "source", "sourceId"],
"source": "imessage",
"sourceId": "9B1C5E2A-7F43-4D8E-A6B0-3C2F9E14D7A5",
"body": "Found the trailhead!"
}
}{
"@context": {
"@vocab": "https://schema.chronicle.app/",
"doc": "https://schema.chronicle.app/docs/"
},
"@type": "MessageAction",
"doc:key": {
"@list": ["@type", "source", "sourceId"]
},
"source": "imessage",
"sourceId": "9B1C5E2A-7F43-4D8E-A6B0-3C2F9E14D7A5",
"timestamp": {
"@value": "2026-05-09T18:22:07.000Z",
"@type": "http://www.w3.org/2001/XMLSchema#dateTime"
},
"agent": {
"@type": "Agent",
"doc:key": {
"@list": ["@type", "source", "handle"]
},
"source": "icloud",
"handle": "alex@example.com",
"name": "Alex Chen",
"sameAs": [
{
"@type": "Agent",
"doc:key": {
"@list": ["@type", "source", "handle"]
},
"source": "email",
"handle": "alex@example.com"
}
]
},
"object": {
"@type": "Message",
"doc:key": {
"@list": ["@type", "source", "sourceId"]
},
"source": "imessage",
"sourceId": "9B1C5E2A-7F43-4D8E-A6B0-3C2F9E14D7A5",
"body": "Found the trailhead!"
}
}@prefix : <https://schema.chronicle.app/> .
@prefix doc: <https://schema.chronicle.app/docs/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
[
a :MessageAction;
doc:key ("@type" "source" "sourceId");
:source "imessage";
:sourceId "9B1C5E2A-7F43-4D8E-A6B0-3C2F9E14D7A5";
:timestamp "2026-05-09T18:22:07.000Z"^^xsd:dateTime;
:agent [
a :Agent;
doc:key ("@type" "source" "handle");
:source "icloud";
:handle "alex@example.com";
:name "Alex Chen";
:sameAs [
a :Agent;
doc:key ("@type" "source" "handle");
:source "email";
:handle "alex@example.com"
]
];
:object [
a :Message;
doc:key ("@type" "source" "sourceId");
:source "imessage";
:sourceId "9B1C5E2A-7F43-4D8E-A6B0-3C2F9E14D7A5";
:body "Found the trailhead!"
]
] .