Attio MCP Server
Attio MCP Server is an MCP server published by kesslerio, verified on MCP revision 2025-11-25; support for the current revision (2026-07-28) is not yet confirmed. Last verified 2026-08-20.
Does Attio MCP Server support the current MCP specification (2026-07-28)?
Not yet confirmed. Attio MCP Server is verified on revision 2025-11-25; we have not confirmed support for the current revision (2026-07-28) as of 2026-08-20.
Is Attio MCP Server a first-party (official) MCP server?
Undetermined. We have not verified the publisher relationship for Attio MCP Server (as of 2026-08-20).
How do I connect to Attio MCP Server?
Attio MCP Server is available via the package npm:attio-mcp, the official MCP Registry under io.github.kesslerio/attio-mcp-server, the source repository at https://github.com/kesslerio/attio-mcp-server. Authentication: unknown. Transports: stdio.
Does Attio MCP Server support MCP revision 2025-11-25?
Yes. Attio MCP Server supports MCP revision 2025-11-25 (checked 2026-08-20).
Does Attio MCP Server support MCP revision 2026-07-28?
No. Attio MCP Server was checked against MCP revision 2026-07-28 and does not support it (checked 2026-08-20).
When were Attio MCP Server's facts last verified?
2026-08-20. Each fact on this page links to the sources used to verify it.
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Which MCP spec revisions does Attio MCP Server support?
Attio MCP Server has 2 verified spec-support records. Each row lists the revision, the verified status, the evidence URL, and the date that fact was last checked.
| Spec revision | Status | Last checked | Evidence |
|---|---|---|---|
| MCP 2025-11-25 | Supported | Source | |
| MCP 2026-07-28 | Not supported | Source |
How widely adopted is Attio MCP Server?
Not ranked in The MCP 500: insufficient public data (coverage floor not met) (snapshot ). The Adoption Index measures public signals only; it says nothing about quality.
Repository and package signals for Attio MCP Server
Measured directly from the source registries, not asserted from a document. Each figure carries the date it was read; none of it affects the verified spec status above.
Repository as of
- Stars
- 69
- Forks
- 20
- Last pushed
- (38 days ago)
- Created
- Open issues
- 83
- Primary language
- TypeScript
- Continuous integration
- Present
- Tests
- Present
- Security policy
- Present
Package (npm) as of
- Latest version
1.6.1- Last published
- First published
- Releases
- 26
- License (package)
- Apache-2.0
- Maintainers
- 1
- Direct dependencies
- 18
- Unpacked size
- 6.0 MB
- Registry signature
- Signed
- Build provenance
- Attested
How was this verified, and what are the sources?
Verified · method: sdk-protocol-constant
· confidence 0.85 (Good).
- Official MCP Registry record for io.github.kesslerio/attio-mcp-server at version 1.6.1 - lists package npm:attio-mcp and repository https://github.com/kesslerio/attio-mcp-server - accessed
- npm registry metadata for attio-mcp at published version 1.6.1, retrieved 2026-08-20 - declares a dependency on @modelcontextprotocol/sdk, which resolves to @modelcontextprotocol/sdk@1.29.0 - accessed
- Published artifact of @modelcontextprotocol/sdk@1.29.0, retrieved 2026-08-20 - the artifact declares LATEST_PROTOCOL_VERSION 2025-11-25 and carries no 2026-07-28 implementation. Read from the artifact itself, not from release notes - accessed