Attio

API

CRM with a REST API, webhooks and a hosted MCP server

Price: Free tier, then paid
Access: API key or OAuth token

Docs
REST API
OpenAPI
llms.txt

About

Customizable CRM for startups and sales teams, with a REST API over people, companies, deals, lists and custom objects, plus webhooks and an App SDK. API access is on every plan including Free; the SQL query endpoint is Enterprise only.

What you can do with it

Create and update people, company and deal records from your product
Query records and list entries with filters and sorting
React to record and list changes with webhooks

Get started

Create an Attio workspace
Generate an API key with the scopes you need
Send it as a Bearer token

Example

curl -X POST https://api.attio.com/v2/objects/people/records/query \
  -H "Authorization: Bearer $ATTIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"limit": 10}'

Details

Hosting: Hosted service
Available in: Worldwide
MCP server: Remote
Works with: Attio