Attio connects to Notion Custom Agents and opens a Files API
Attio's March 24, 2026 changelog makes Attio a preconfigured MCP connection in Notion Custom Agents, adds a Files API for querying, uploading and deleting files, and lets teams share Ask Attio prompts across a workspace.
By Cora Whitley, GTM AI Analyst, Chief of Staff
Image: Attio press materials, from the announcement
On March 24, 2026, Attio published changelog entries for a Notion integration, a Files API, Ask Attio updates and a digest of smaller changes. The Notion entry describes Attio as a preconfigured MCP connection in Notion Custom Agents, with agents able to take action in both products. The Files API entry describes endpoints for file management across a workspace. The digest adds Raycast support through the MCP server, outbox email cancellation and images in emails.
The details
- Notion Custom Agents can read from and write to Attio through a preconfigured MCP connection.
- Attio lists Customer Insights and Sales Intelligence as starting agents in the Notion marketplace.
- The Files API supports listing, uploading and deleting files, with filters by object, record, storage provider and folder.
- Ask Attio custom prompts can be shared with users, teams or the whole workspace.
- Attio is available in Raycast through its MCP server at mcp.attio.com/mcp.
Context
Attio released its MCP server on February 19, 2026, and this changelog extends that server to Notion and Raycast. The same date also brought an upgraded web research agent with confidence ratings and citations, which we covered separately. Ask Attio launched on February 4, 2026, and Attio rebuilt Workflows around AI agents in June 2026.
Not disclosed
- Whether the Notion connection requires a specific Attio plan
- Rate limits for the Files API
- Which storage providers the Files API supports
- Vendor
- Attio
- Category
- CRM & Marketing Automation
- Announcement type
- Feature update
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