# Attio MCP Server (io.github.kesslerio/attio-mcp-server@1.7.0) > Source: > Published: 2026-08-25 22:17:55+00:00 [← Index](/leaderboard) # Attio MCP Server AI-powered Attio CRM access. Manage contacts, companies, deals, tasks, notes and workflows. The current version, v1.7.0, was published to the official MCP registry on 2026-08-25. It is distributed as attio-mcp on npm, filed under CRM & Sales by this index, and declares 4 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; [the index's current counts](/stats) put this record in context. ## Using Attio MCP Server in Claude, Cursor, Gemini CLI, Cline, or Zed? MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and **HOLDs the call** when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use **Install this server** for that). Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less ``` uv tool install mcpindex-gate && mcpindex-config-wire ``` [method](/methodology) Semantic screen found no manipulation pattern in the description. Conformance probe not yet run. `mcpindex.integrity.description` passINFOevidence“No malicious instructions found”via static_description - - Semantic screen only - the deterministic conformance probe has not run on this server - - Confidence is reported but not yet calibrated (v1) - - Screen reads the tool description, not the live behavior - - advisory - - registry description only no input schema - - screen model 8b - - Still current: the description we screened is unchanged, re-checked against the registry - - The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page. Own this server? [Screen its description →](/screen) ## That verdict was true at screening time (snapshot 2026-08-25). Contracts can change after screening, with no version bump. The gate pins Attio MCP Server’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday. [See your first HOLD in 2 minutes →](/guides/install-the-gate-first-hold) Related: [how to trust an MCP server](/guides/how-to-trust-an-mcp-server) · [screen before install](/guides/screen-mcp-server-before-install) · [silent contract drift](/guides/mcp-silent-contract-drift) People vet a server before wiring it in. One line on your project site or docs answers that with an independent record: screening verdict, registry provenance, contract drift history. It stays current as new screens and drift events land. ``` [Independent trust record for Attio MCP Server](https://mcpindex.ai/server/io-github-kesslerio-attio-mcp-server) - screening verdict, registry provenance, and contract drift monitoring. Independent trust record for Attio MCP Server - screening verdict, registry provenance, and contract drift monitoring. ``` A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does. ``` [![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-kesslerio-attio-mcp-server)](https://mcpindex.ai/server/io-github-kesslerio-attio-mcp-server) mcpindex verdict ``` `ATTIO_API_KEY` Your Attio API key (required for all tools except health-check) `ATTIO_WORKSPACE_ID` Optional Attio workspace ID for workspace-specific operations `ATTIO_MCP_TOOL_MODE` Tool mode: 'full' (all tools) or 'search' (search tools only). Default: 'full' `MCP_LOG_LEVEL` Logging level: 'DEBUG', 'INFO', 'WARN', 'ERROR'. Default: 'INFO' [methodology](/methodology) [Provar MCP Serverio.github.ProvarTesting/provar](/server/io-github-provartesting-provar) Provar MCP: AI-powered Salesforce test automation. Generate, validate, migrate, and run tests. [BoondManager MCP Serverio.github.fauguste/boondmanager-mcp-server](/server/io-github-fauguste-boondmanager-mcp-server) MCP Server for BoondManager API - 182 tools, 12 prompts, 22 resources (ERP/CRM) [Kylas CRMio.github.kylastech/kylas-crm](/server/io-github-kylastech-kylas-crm) MCP server for Kylas CRM: create, search, and manage leads. Requires KYLAS_API_KEY.