CRM and sales - official Attio server
Attio MCP server
Attio's hosted MCP server gives AI tools OAuth-authenticated access to an Attio workspace. Tools cover searching, creating, updating and merging records, lists, notes, tasks, comments and activities, plus searching emails, meetings and call recordings. Read operations are auto-approved; write operations ask for confirmation. Attio hosts it at https://mcp.attio.com/mcp with OAuth auth.
Last verified 15 tools3 sources
Install
Generic
https://mcp.attio.com/mcpTools
list-objects- List all objects in the workspace (e.g. companies, people, deals), with optional fuzzy search by name or API slug
search-records- Full-text search for records by name, email, domain, or other indexed attributes
list-records- List records in a given object with optional filtering and sorting
get-records-by-ids- Retrieve full details for specific records by their IDs
create-record- Create a new record (person, company, deal, or custom object)
upsert-record- Create or update a record using a matching attribute (e.g., email or domain)
update-record- Update an existing record by record_id
merge-records- Merge two records of the same object into one new record
list-records-in-list- List entries in a given list with optional filtering and sorting, including their parent records
add-record-to-list- Add a record to a list as a new list entry
create-note- Create a new note attached to a record
semantic-search-notes- Find notes by topic using AI-powered semantic search
create-task- Create a new task with optional deadline, assignee, and linked record
get-call-recording- Retrieve full details and transcript of a specific call recording
run-basic-report- Run aggregate reports on records or list entries, including totals, averages, and grouped breakdowns
As documented on October 17, 2026. A running server reports its current list through tools/list.
Notes and caveats
- Available on all plans to all workspace members.
- The query-particle-sql tool (read-only SQL) is not available on every billing plan.
- Per-workspace rate limits apply by tier: Read 100 req/s, Write 25 req/s, Merge 5 req/s, Search 300 req/min, and Semantic search, Reporting and SQL 2 req/s each.
- Claude and ChatGPT users install Attio from their in-app connector or app directories.
- Other clients add the remote URL and complete OAuth.
- The docs give no client-specific JSON or CLI snippets and do not name the transport, so streamable-http is assumed from the /mcp endpoint.
- Hosted only: no public repo.
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Related reading
- What's New in Mastra (Late 2026): Harness, AgentController GA, Eval Gates and MCP 2.xMastra in late 2026: goals, schedules, signals, AgentController GA, eval gates and MCP 2.x, with type-checked TypeScript examples and honest tradeoffs.
- MCP vs A2A vs Function Calling: Which Layer Does What in 2026MCP vs A2A vs function calling compared on the 2026-07-28 MCP spec and A2A 1.0: what each protocol does, where they overlap, and how to stack them.
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- Reverse Engineer Anything (REA): What the MCP Server Does and Where the Line IsREA (Reverse Engineer Anything) is an MIT-licensed MCP server that lets Claude Code, Codex or Cursor inspect binaries, Electron apps and APKs. How to try it.
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FAQ
What does the Attio MCP server do?
Attio's hosted MCP server gives AI tools OAuth-authenticated access to an Attio workspace. Tools cover searching, creating, updating and merging records, lists, notes, tasks, comments and activities, plus searching emails, meetings and call recordings. Read operations are auto-approved; write operations ask for confirmation. The vendor documents 15 tools, including list-objects, search-records, list-records and get-records-by-ids.
How do I add the Attio MCP server to an MCP client?
Use https://mcp.attio.com/mcp, copied from Attio's docs.
Does the Attio MCP server need authentication?
Yes, OAuth. Transport: Streamable HTTP. Status: GA, last checked October 17, 2026.
Sources
Last verified against 3 Attio pages, then re-checked independently.
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