THE LOOP
A repeatable process for building software with AI agents: define the work, implement it, check the result and resolve failures before closing the task.
UsefulErrors.
We design and run software for people building independent culture: public platforms, focused SaaS, internal tools, AI agents and the infrastructure underneath.
Selected systems
Projects, not promises.
FundingOS
Funding applications for cultural and creative organisations and businesses: find relevant programmes, understand the requirements and prepare an editable first draft.
LabelOS
An independent label’s back office: plan releases, manage the roster and turn checked sales data into traceable royalty statements.
Sadisa
A proactive personal assistant for neurodivergent and neurotypical people, with task breakdown, calendar support and check-ins that help you get started.
EPK Studio
Give bookers and media one clear view of an artist, with music, story and visuals in a shareable press kit and a PDF with working links.
CLLB
Connect creative people and organisations through projects, open calls and opportunities, with the work itself providing the context for finding collaborators.
Spintunes
Turn cover art and audio into spinning release videos for social channels, with reusable visual settings and encoding in your browser.
Testpress
Share unreleased music with DJs and press through private listening pages, with feedback, download permissions and release activity in one workflow.
Promo Mailer
Prepare personal mailings using your own email setup, with saved contact lists, reusable drafts and a preview of what each recipient will receive.
Tekanzo
Turn market research into testable trading hypotheses, with source evidence, human review and simulation before any paper-trading action.
Sirius
Plan and run AI-assisted work on your Mac, with project context and one place to manage sessions, delegated tasks and work that needs your attention.
MOSAIC + Cockpit
Shared memory and continuity for AI work across projects, with Cockpit showing the portfolio’s jobs, progress and items that need attention.
Selected websites
Built, launched, live.
EYES ON
A Berlin-based magazine about culture, subculture and the politics of belonging, connecting local stories with an international perspective.
NOSERVICE
Targeted promotion for independent electronic releases, with DJ and radio outreach, press pitching and campaign coordination shaped around the record.
Moses Mawila
A personal and consultancy site for Moses Mawila’s work in culture, funding and software, with routes into collaborations and advisory work.
Sundowner Berlin
An underground electronic music publication pairing DJ mixes with artist interviews, with reviews and stories that put the people behind the music in context.
S/E STUDIO
A creative studio for visual identities, campaigns and digital design across music and independent culture.
System Error Worldwide
A cultural platform for underground electronic music, with releases, artists and events alongside the projects that make up the System Error ecosystem.
What we build
One practice. Six entry points.
Product architecture
From a real operational problem to a buildable product: scope, flows, systems and the sharp first release.
Websites & platforms
Fast, accessible public websites and content platforms with the operational layer considered from day one.
SaaS & internal tools
Focused software that replaces fragile spreadsheets, repetitive handoffs and generic tools that almost fit.
AI agents & automation
Human-supervised agents and durable workflows for research, operations, communication and structured decisions.