# StackOne
ID: 07-stackone
Page: https://gtmmcps.com/tools/07-stackone
JSON: https://gtmmcps.com/data/tools/07-stackone.json
Documentation references: https://gtmmcps.com/docs/07-stackone/
Category: MCP Layer
MCP support: official
Testing: RESEARCHED
API access: free
Last checked: 2026-09-07
Endpoint check: not-probed; date: Not recorded

A unified-API vendor that publishes a stated 518 managed MCP servers exposing 31,928 tools across HR, CRM, IT and finance applications, reachable through one endpoint with per-account routing, plus dynamic tool discovery so an agent loads only the tools a task needs.

## MCP links
- https://mcp.stackone.com/mcp
- https://api.stackone.com/mcp?x-account-id=
- https://www.stackone.com/platform/mcp/

## Sources
- https://www.stackone.com/platform/mcp/
- https://www.stackone.com/pricing/
- https://api.stackone.com/mcp
- https://docs.stackone.com/mcp
- https://mcp.stackone.com/mcp
- https://github.com/StackOneHQ/stackone-plugin

## Research notes
Verified 2026-09-07: POST of an MCP initialize to https://api.stackone.com/mcp returned HTTP 401 with {"statusCode":401,"message":"Unauthorized"}, confirming a live auth-gated server. NAME COLLISION INSIDE ONE VENDOR, worth recording because it will catch an automated verifier: https://docs.stackone.com/mcp is also a live MCP server, but it is a Mintlify documentation server whose tools are search_stackone and query_docs_filesystem_stackone over StackOne's own docs, and it is read-only and scoped to published site content. It is not the unified-API server and must not be recorded as the product endpoint. The vendor's positioning line is a direct swipe at this directory's own subject matter and is quotable: "First-party MCPs weren't built for production. StackOne's are." GTM connectors the research surfaced on StackOne include Salesloft, JustCall, Dialpad, Help Scout, RingCentral and Aircall, which means several vendors in this directory can be reached either directly or through StackOne, and a buyer should compare rather than assume the wrapper is worse. Vendor also advertises automated creation of new MCP servers, which would make the 518 figure a moving number. 2026-09-07: Official MCP registry carries com.stackone/mcp (DNS-verified stackone.com namespace) with remote https://mcp.stackone.com/mcp; that URL returned 401 to an MCP initialize, as did https://api.stackone.com/mcp (https://mcp.stackone.com/mcp). 2026-09-09 (P6-04 repo sweep): first-party repository recorded at https://github.com/StackOneHQ/stackone-plugin, the org StackOneHQ (profile site stackone.com), homepage docs.stackone.com, last push 2026-08-22. It is NOT the server source: the README says the plugin connects an agent to StackOne's HOSTED MCP server. The official registry entry com.stackone/mcp (DNS-verified stackone.com namespace) lists only the remote https://mcp.stackone.com/mcp and no repository, so no public server source was found.

## Named capabilities
Tool names below are reported by sources. Their presence is not a successful call.

## CLI evidence
Status: official
- Reported install command: npm install -g @stackone/cli; source: https://www.npmjs.com/package/@stackone/cli

Read current vendor documentation before configuring or running commands.