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Closing deliveries cover five file groups. Clients receive the design source files, the exported assets, the written guides, the measurement setup, and the account transfers, each checked against a delivery list both sides signed early, so the internal team holds everything needed to run and extend the work without a single follow-up request.
Delivery completeness gets judged months later, when a new hire tries to build from the package alone. Handover lists inside top ai product design agency projects get signed during kickoff. Early written promises arrive without argument. Late rushed definitions arrive thin. A signed list turns closing from goodwill into obligation.
Which design files transfer?
Design source files transfer in full working order, not as flattened exports that nobody can edit, and each part of the source package carries its own completeness rule.
- Component libraries arrive with every screen built from shared parts and organised by section, with layers named throughout, because a file full of unnamed layers costs its next editor hours before any real work starts.
- Token files hold colours, spacing, and type values as named entries ready for code reference, so engineers point at names instead of copying numbers screen by screen.
- Screen states ship complete, with error, empty, and loading versions delivered beside every happy path, since missing states surface later as developers guess that drift from the design.
- Version history stays preserved inside the files, letting future editors trace how choices evolved rather than meeting the final state cold.
Editability gets tested before close, with a client team member opening the files and making one small supervised change, because a library that only its authors can navigate fails its purpose, however complete it looks.
Project documentation supporting materials
Written guides come along to carry the reasoning that files alone cannot hold. Design system documentation explains each component’s use, the spacing rules, and the do-not cases, written for the future hire who has never met the project. Decision records transfer with the package, holding why chosen directions were approved and what alternatives fell away. Which saves internal teams from reopening settled questions every planning season. While behaviour notes accompany the screens, stating what happens on tap, on error, and on slow connection, since static files leave exactly these moments to guesswork.
Measurement tracking access
Measurement setups and access rights close the delivery, moving the watching tools and every account into the client’s hands.
Dashboard configurations transfer with a walkthrough recorded, covering which numbers get read weekly and what movement should trigger a design question, so the readings continue after the agency steps back. Account ownership moves on a written schedule across tool logins, font licenses, and asset stores, with admin rights confirmed by the client side before the final meeting, and the closing session walks the signed checklist item by item until both sides confirm the list stands complete.
Deliveries built from editable sources, honest documentation, live measurement, and confirmed transfers leave clients standing on their own ground. Internal teams holding such a package extend the work confidently through the years that follow.
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