Skip to main content Announcing Tool Gateway MCP: the universal MCP Read the announcement

MCP Gateway for Glean. One Tool Gateway MCP for Glean Assistant and Glean Agents.

Glean brings the context. StackOne Tool Gateway MCP adds live reads and writes in the systems your teams run, added once by IT and used with each employee's own access.

Illustration: a Glean agent named Northwind Deal Desk moves the Northwind Health renewal to Negotiation in Salesforce and posts to Slack. StackOne runs one read and two writes as Maya Patel, with her own access. Each call is checked against IT's policies, and each response is screened by StackOne Defender.

Demo. See it in Glean.
Setup to live actions in 8 minutes.

Where StackOne fits in. One server, two ways to sign in.
Chosen by who runs the agent.

Glean Assistant OAuth User

Each employee, with their own access

  • Glean signs each person in to StackOne on first use, through Dynamic Client Registration.
  • They pick the accounts Glean may use, and every call runs with their permissions.
  • Writes ask for an Allow before they run, unless an admin turns confirmation off.
Glean Agents OAuth Admin

Background agents

  • Independent Agents run with nobody signed in, so they use one service credential IT controls, scoped to the accounts they need.
  • Writes in a background run need Run without user confirmation, set by the admin and the builder.
  • Scheduled agents are different: they run as the person who activated them, with that person's own login and access.

How StackOne plugs in. Built to drop into Glean.
No custom infrastructure.

Connect. One Tool Gateway MCP for every system Glean needs.

  • One Streaming HTTP URL for 500+ connectors, and growing.
  • Dynamic Client Registration, so there are no client IDs to create in Glean.
  • Each employee picks their accounts on StackOne's consent screen.
  • Connector profiles set the actions each project can use.
  • Anything not in the catalog? Build it with the AI Connector Builder.
Tool Gateway MCP

Without a tool gateway? Each system becomes its own server or integration to register, authorize and maintain.

Secure. Every call checked, screened and logged, down to the field.

  • Every action is marked read, write or delete through standard MCP tool annotations.
  • Policies set what each team's agents can reach, down to the field, and mask what they can't.
  • Defender screens tool responses for prompt injection before the agent reads them.
  • Every call is logged against the Glean user who made it, with every policy decision recorded.
  • Field-level logs show which fields each call read or changed, with request and response bodies in Advanced Logs.
Governance

Without a tool gateway? Glean records which tool ran. The field-level record of what it read and changed lives in the tool gateway's logs.

Optimize. Agents load only the tools and data they need.

  • Tool Search mode gives a Glean agent two tools: one finds the right action, one runs it.
  • 3.8x cheaper per request than loading every tool, across 824 tasks.
  • When a StackOne call would return thousands of records, Deep Query returns just the count, total or fields it needs.
  • Action schemas are written for agents, not copied from raw APIs.
Tool Search

Without a tool gateway? Every tool definition loads into the agent's context up front, and every list call returns whole records for the agent to read.

How it works. Set up once for your organization.
Onboard in minutes.

One-time setup for IT. Self-serve for everyone else.

IT Admin

One-time setup, no per-user wiring.

The admin connection only discovers the tools. Each employee still signs in to StackOne once, so every call runs as them. The URL carries no access on its own.

Glean setup guide

Define actions through connector profiles, shared per project.

Explore Connector Access

Connectors. Which systems will you
connect Glean to?

One Tool Gateway MCP import gives Glean Assistant and Glean Agents 500+ pre-built connectors and 35,000+ actions, and growing.

Need another connector? Build one with the AI Connector Builder

Common questions. MCP Gateway for Glean FAQ
Learn what StackOne can do for you.

Give your Glean agents the tools to act.

One Tool Gateway MCP import, with every call logged.