Common Interest Computing
Custodia Continuity / CIC Planning Session, March 2026
Vision
A CIC that uses agentic development to give public sector, nonprofit and commercial organisations ownership of their software. The stated mission is digital sovereignty, meaning that software is owned by the organisations that use it. The intended long-term outcome is that clients no longer need the organisation.
Core Principles
- Sovereignty: software belongs to the problem owner
- Handover: every project designed to be handed over from day one
- Ongoing Support: support continues until each client is ready to run the system themselves
- Open Source: everything GPLed, no licensing revenue ever
- Survivability: everything built must keep working if the organisation closes
Business Model
Income from day rates and infrastructure hosting only; no software licensing.
- Minimum problem owner engagement: one dev day/month (£1,200) + £300/month infrastructure
- Minimum associate developer engagement: two days/month on day rate
- Revenue scales with project size; day rate model throughout
Sector Coalition Model
Where individual organisations can’t fund development alone, we help them form coalitions. A group of charities sharing a common problem can together fund ongoing development and jointly own the result.
The Node Model
We help capable organisations establish their own internal software organisations. Hospital trusts, academy trusts, and others can spin up their own nodes. We provide legal frameworks, hiring guidance, tooling, and culture. Engineers leaving to start new nodes elsewhere is welcomed and expected.
Infrastructure
Each problem owner gets their own Debian Linux server: web app and Git server combined. Full stack: repositories, agent system prompts, documentation, automated backups, control panel. Hosted through a UK B-Corp partner, which is the permanent exit path. Clients stay hosted until ready to self-host.
Agentic Development Framework
Engineers will not inspect the majority of code that ships. The 2026 priority is to build a framework intended to make this safe:
- Agents assess readiness and present work with demos and context
- Agent-driven TDD schedules ensuring data integrity and UI quality
- Version control interfaces designed for agentic workflows
- Documentation generated automatically during the build
- Reusability detection distinguishing generic from bespoke modules
- Standardised patterns for auth, data, APIs across all projects
The organisation will use the framework on its own work first.
Go-To-Market
Start with practitioners who have pressing problems, not with procurement teams. Solve one problem well and at low cost, and document all of the work. Use the existing programme to deliver the first 5–10 projects before the CIC launches.
Timeline
- Now – Summer 2026MVP infrastructure, agentic framework, first projects
- Summer 2026Business plan complete, backed by real case studies
- Late 2026First CIC funding application: local grants, impact investors, local economic growth angle
- Target£250k seed funding to reach self-sustaining day rate operations
Key Risks
- Public sector inertia: ground-up approach mitigates this
- Coalition friction: facilitate informal relationships before formal commitments
- Quality at scale: agentic quality gates and standardised toolchain
- Talent sustainability: a mission-led culture and worthwhile problems; move from using associates to employing staff