Whalesync MCP server

Whalesync keeps data in two-way sync between the tools your team already uses — Airtable, Webflow, HubSpot, Salesforce, Notion, Postgres, and more.

This repository is the public home of the Whalesync MCP server: a remote Model Context Protocol server that lets AI agents build and manage syncs for you — create a sync between two apps, map tables and fields, turn it on, and monitor it, including answering "why isn't this record syncing?".

• Server URL: https://api.whalesync.com/mcp (Streamable HTTP)
• Auth: OAuth 2.1 with PKCE — your client opens a browser to approve access; no API keys to paste. Read-only access is available at consent time.
• Docs: https://docs.whalesync.com/api/mcp

The server is remote-only. There is nothing to install from this repository — it exists so directories and registries can link to a canonical public source. The server itself is developed elsewhere.

Install

Cursor — Add to Cursor, or add to ~/.cursor/mcp.json:

{ "mcpServers": { "whalesync": { "url": "https://api.whalesync.com/mcp" } } }

Claude Code

claude mcp add --transport http whalesync https://api.whalesync.com/mcp

VS Code

code --add-mcp '{"name":"whalesync","type":"http","url":"https://api.whalesync.com/mcp"}'

Codex

codex mcp add whalesync --url https://api.whalesync.com/mcp

claude.ai / ChatGPT — add a custom connector with the URL https://api.whalesync.com/mcp.

On first use, your client opens a browser window to sign in to Whalesync and approve access. You'll need a Whalesync account.

What the agent can do

24 tools over the Whalesync public API:

• Build: sync_create, sync_update, sync_list_connectors, sync_list_bases, sync_list_tables, sync_list_fields, sync_get_mappings, sync_update_mappings, sync_validate_mappings
• Run: sync_activate, sync_pause, sync_delete
• Monitor & fix: sync_get_status, sync_list_issues, sync_get_issue, sync_retry_issue, sync_list_operations, sync_get_operation, sync_search_records, sync_get_record_status, sync_list_pending_deletes
• Navigate: sync_list, sync_get, sync_whats_next

Tools are prefixed sync_ because they cover Whalesync's sync feature; other features will arrive under their own prefixes.

Anything irreversible stays human-gated: connecting your apps (OAuth), starting a sync, and approving deletes all happen in the Whalesync app — the agent hands you a link at each step.

Support

• Docs: https://docs.whalesync.com
• Support: support@whalesync.com
• Privacy policy: https://www.whalesync.com/privacy-policy