MMS Master Studio
We manage the shared AI infrastructure, provider setup, spending controls, and production partnership.
Agencies have the relationships. Mustard Studio gives them the operating home, agentic production tools, and engineering partner to do more for the clients they already serve.

An agency should be able to win the work, build it, deliver it, and keep improving it without rebuilding its operating system every time.
Mustard brings familiar business structure and agentic production into one place. Mr. Mustard carries the conversation into company context, Missions, and reviewable outputs. The agency can delegate an outcome or work directly in the tools.
We manage the shared AI infrastructure, provider setup, spending controls, and production partnership.
The agency runs its business, designs, builds, learns, and commissions fixed-package production under its own brand.
Clients request work, review decisions, find their deliverables, and keep the relationship with their agency.
Pipeline, proposals, invoices, marketing, approvals, and operating playbooks.
A full-screen conversation with the company context, projects, and saved work.
Editable design layers, product proofs, print exports, and connected commerce.
24 lessons, 48 skill checks, and practical labs for motion, agents, and agency economics.
Custom Next.js and React websites, inquiry records, search visibility, and connected reporting.
$97 Partner or $497 Pro monthly. Bounded runtime. Production at set package prices.
Build the repeatable agency delivery engine.
Product scenes use isolated demonstration records. Distribution and investment milestones describe the thesis and proposed plan. The film makes no customer, revenue, or retention claims.
Sarah Scarano · Modern Mustard Seed · hello@modernmustardseed.com