Translate a legacy list ID to a new list ID
One step with HubSpot. We can help you get access.
Look something up
Translate a legacy list ID to a new list ID
with HubSpot
Works with AI assistants
Use HubSpot: its Hubspot Basic API lets you translate a legacy list ID to a new list ID in a single step (GET /crm/lists/2026-03/idmapping). HubSpot also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.
- What's the new ID for my old legacy list ID?
- Can I map one legacy list ID to its current ID?
Say it to your AI assistant
- Translate legacy list ID {legacyListId} to the new list ID.
- Look up the modern ID for old list {legacyListId}.
For your developer
GET /crm/lists/2026-03/idmapping in Hubspot Basic API. Full spec on APIs.io.