The intercom API reference.
https://api.intercom.io/
https://api.eu.intercom.io/
https://api.au.intercom.io/
https://api.intercom.io/contacts/{contact_id}/archive
https://api.eu.intercom.io/contacts/{contact_id}/archive
https://api.au.intercom.io/contacts/{contact_id}/archive
curl -i -X POST \
https://api.intercom.io/contacts/63a07ddf05a32042dffac965/archive \
-H 'Authorization: Bearer <YOUR_TOKEN_HERE>' \
-H 'Intercom-Version: 2.11'
{ "id": "667d60b18a68186f43bafdc0", "external_id": "70", "type": "contact", "archived": true }
https://api.intercom.io/contacts/{contact_id}/unarchive
https://api.eu.intercom.io/contacts/{contact_id}/unarchive
https://api.au.intercom.io/contacts/{contact_id}/unarchive
curl -i -X POST \
https://api.intercom.io/contacts/63a07ddf05a32042dffac965/unarchive \
-H 'Authorization: Bearer <YOUR_TOKEN_HERE>' \
-H 'Intercom-Version: 2.11'
{ "id": "667d60b28a68186f43bafdc1", "external_id": "70", "type": "contact", "archived": false }