StackOne

Show rating breakdown
4.8 out of 5 stars
67 reviews
  • 1 profiles
  • 4 categories
Average star rating
4.8
Serving customers since
2023
Products
Reviews
About
Products
Reviews
About

Profile Name

Star Rating

61
5
0
0
1

StackOne Reviews

Review Filters
Profile Name
Star Rating
61
5
0
0
1
Verified User in Legal Services
CL
Verified User in Legal Services
Small-Business (50 or fewer emp.)
06/30/2026
Validated Reviewer
Review source: Organic

The right architectural foundation for privacy and security professionals

|StackOne
I view this from the perspective of a privacy and cybersecurity professional, so I start with the risk model. They made the right choice to move away from the "unified API" approach (which quickly hits its limits with LLMs) and instead expose each application's native semantics as controllable actions. Permissions remain the system's actual ones, and all actions are logged; execution remains deterministic alongside MCP, and by default, no data is retained. These are precisely the safeguards needed to meet the requirements of GDPR (Articles 5, 25, 32), ISO 27001, and ISO 42001. I also really liked the fact that prompt injection protection is built into the infrastructure rather than being an add-on component, and that relying on open standards like MCP and A2A minimizes vendor lock-in. In my experience, the support team is responsive and knowledgeable.
Jack M.
JM
Jack M.
Director of GrowthSmall-Business (50 or fewer emp.)
06/29/2026
Validated Reviewer
Verified Current User
Review source: Organic

StackOne: Unifies Our BD Stack and Automates CRM Logging

|StackOne
StackOne is the integration layer that makes our whole business development setup actually hang together. I've built a BD operator in Claude that scans for ICPs, researches them and drafts personalised outreach, and StackOne is what logs every single touchpoint straight into our CRM (Vincere). Contact creation, company lookups, record creation, sent emails, it's all captured automatically so the team always sees where an account is up to. One integration layer instead of wiring up each tool myself.
George P.
GP
George P.
CEO / Co-FounderSmall-Business (50 or fewer emp.)
06/26/2026
Validated Reviewer
Verified Current User
Review source: G2 invite

Stackone Makes Agent Support and Operations Smooth and Efficient

|StackOne
Using Stackone to support our agents and keep our internal operations running smoothly is super easy and efficient.

About

Contact

HQ Location:
San Francisco, US

Social

What is StackOne?

StackOne is the Tool Gateway for successful AI rollouts across teams and systems. It manages the tool layer between AI agents and business applications, giving organizations shared, governed and secured access to business systems without every team building and maintaining separate integrations. StackOne provides managed connectors for business applications and pre-built actions via an MCP gateway, A2A, AI SDKs and APIs, plus an AI Connector Builder to extend connectors or connect custom and legacy systems. Tool discovery and token optimization surface only relevant tools, keeping context lean. Managed authentication and granular permissions govern access for every user, agent and action; prompt-injection defense and reliable, secure execution protect against unsafe or malicious tool responses; and end-to-end observability captures tool calls, actions, failures and audit trails. StackOne has raised $24 million and is backed by GV (Google Ventures) and Workday Ventures.

Details

Year Founded
2023