We build AI operating systems for firms that sell expertise.
Agencies, law firms and other expert firms sell judgment, delivered through repeatable work. Stackmint gives them an operating system that does the groundwork from their playbooks, keeps their people in charge of every decision, and runs the client relationship from request to invoice.
What an AI operating system is
- 01
Your knowledge
Playbooks, templates and past work become the context every specialist works from.
- 02
AI specialists
Each specialist does one job well, built from your method.
- 03
Workflows
Specialists hand work to each other and stop at approval gates where your people decide.
- 04
Client portal
Clients send requests, approve quotes and deliverables, and pay invoices in your branded portal.
Expert firms need more than a copilot.
A copilot helps one person with one prompt. A firm needs the whole service to run on its method, with its people accountable for what goes out.
Your method, not a generic model
What a firm sells is how it does the work. The specialists are built from your playbooks, so the output follows your standards.
The whole service, not one prompt
Client work runs from request to quote, delivery, approval and invoice. An operating system covers the whole path.
Your people stay accountable
Firms answer to clients and regulators. Nothing reaches a client until a named person approves the exact version.
People approve. Everything is logged.
Governance is not a setting we add later. Every operating system runs on the same layer: human approval, audit logs, kill switches and versioned agents.
Human approval before anything reaches a client
Nothing reaches a client until a named person approves the exact version.
Immutable, granular audit logs
Every request, decision, change and result is recorded. Answer any client or regulator with evidence.
Kill switches
Stop any agent or workflow at once.
Execution gateway
Agent actions run through a controlled gateway, with credentials kept server-side.
Versioned agents
Each agent, playbook and model version is pinned. No silent changes to how work gets done.
Client data isolation
Every client and matter has its own context. Documents are treated as content, never as instructions.
Two ready-made, one built with you.
AgencyOS and LegalOS are ready for marketing agencies and law firms. Any other expert service gets a Custom OS on the same platform.
AgencyOS
31 AI specialists across strategy, client comms, analytics and production, with a content calendar and a client portal from request to invoice.
31 specialistsContent calendarPaid adsExplore AgencyOSLaw firmsLegalOS
28 AI specialists across contract review, research, drafting and firm operations. Your lawyers approve the exact version, behind ethical walls.
28 specialistsPlaybooksEthical wallsExplore LegalOSAny expert firmCustom OS
An operating system built on the Stackmint platform around your own services, playbooks and clients.
Your playbooksYour workflowsSame governanceSee the platformTwo hubs, one team.
Stackmint is built between San Francisco and Paris.
Product, runtime and platform engineering
We ship the execution engine, the governance runtime and the controls from here.
Integrations, applied AI and partnerships
Our base for EU integrations, compliance and industry-specific work.
See what an operating system would run in your firm.
Bring one real piece of client work. We map it to specialists, workflows and approval gates with you.