propertiesToSend not passing properties to card context in platform 2026.03

Developer Support APIs & Integrations
1

I have a private app with static auth on platform 2026.03. My card-hsmeta.json has:

json

"objectTypes": [
 {
 "name": "tickets",
 "propertiesToSend": ["content", "subject"]
 }
]

But context.crm.objectProperties is always empty in the card. The ticket ID is available via context.crm.objectId. I also tried hubspot.fetch() to an external Vercel endpoint but get a rendering error. What is the correct way to read ticket properties in a 2026.03 app card?

2

Hi @GPhillips67,
Thank you for posting to the Community!
I’d like to tag in some of our Top Contributors to see if they have any ideas on this one -- Hi @miljkovicmisa, @nickdeckerdevs1, and @ChristinaKay. Do any of you have any ideas?
Thank you in advance!
Cassie, Community Manager

3

Currently HubSpot UI Extensions platform, propertiesToSend does not populate context.crm.objectProperties inside the React card runtime.
propertiesToSend is only forwarded to backend/serverless functions invoked through hubspot.fetch().
That’s why context.crm.objectProperties is empty even though the ticket ID is available through context.crm.objectId.
For frontend access to CRM record properties, HubSpot recommends using:
actions.fetchCrmObjectProperties()
or the newer hook:
useCrmProperties()
Example:
import { hubspot } from ‘@hubspot/ui-extensions’;

hubspot.extend(({ actions }) => (
<Extension fetchProperties={actions.fetchCrmObjectProperties} />
));

const Extension = ({ fetchProperties }) => {
useEffect(() => {
fetchProperties([‘subject’, ‘content’]).then((props) => {
console.log(props);
});
}, [ ]);

return null;
};
You can also use:
import { useCrmProperties } from ‘@hubspot/ui-extensions/crm’;

const properties = useCrmProperties([‘subject’, ‘content’]);
So your current propertiesToSend configuration is valid, but it is only useful when passing properties into a hubspot.fetch() request, not for populating context.crm.objectProperties in the card itself.
Taken help from AI