OpenSend docs
Update Contact Property
Update display metadata for a custom contact property.
PATCH /contact-properties/{id}
Compatibility behavior:
/contact-properties/{id}is the compatibility alias handled by middleware rewrite to/api/properties/{id}.- In compatibility mode, if
typeis provided it must be one of:string|number|boolean|date. nameandfallback_valueremain editable for legacy-compatible updates.keyis create-only/stable and is not patch-updated by this route.PATCH /api/properties/{id}remains legacy compatible for existing OpenSend integrations.
Authentication
Use an OpenSend API key in the Authorization header.
http
Authorization: Bearer os_YOUR_API_KEYDashboard session cookies are not API credentials.
Parameters
Changing property semantics after use can affect segmentation.
Response
Returns an OpenSend JSON response for the authenticated tenant. Error responses use OpenSend error envelopes and standard HTTP status codes.
Self-hosting notes
Self-hosted deployments can use the same path on their own OPENSEND_BASE_URL. Ensure middleware is enabled so API-like requests are routed to /api/properties/{id} while dashboard page requests continue to render normally.