The way Platform builds software
Platform is a department at Plain Concepts. Its apps share one look through tokens, follow the same conventions, and are maintained by agents inside guardrails that make that safe. This site is the method written down: read it to see how we work, or follow it to set up a project of your own.
The four pillars
Four repositories carry the whole way of working, set out in How we work. Foundations sets the conventions, agent-harness puts them into a repository as something agents can act on, agentic-workflows runs the agents against it, and project-health reports on what came out.
- FoundationsThe theme, the conventions, the reference architecture, and this site.PlainConceptsPlatform/Foundations
- agent-harnessInstalls the Platform Harness into a repository: skills, commands, an agent team, and an OpenSpec workspace.PlainConceptsPlatform/agent-harness
- agentic-workflowsThe router and worker catalog that runs the pipeline, plus the CLI that installs and updates it.PlainConceptsPlatform/agentic-workflows
- project-healthDelivery and agent metrics, collected from GitHub and published as a site.PlainConceptsPlatform/project-health
The theme at screen scale
An information-dense internal tool built only from the published tokens: elevation is a border and a surface, corners are one radius, and nothing casts a shadow. Composed from the same component demos in the catalog.
Overview
Theme adoption across Platform applications.
Applications
24
across 6 teams
On the current theme
19
5 behind by one minor
Failing checks
2
both in staging
Adoption over time
Recent activity
- ui-theme 0.1.0 published
- capacity-tool upgraded
- billing-portal check failed
- docs deploy succeeded
| Stack: .NET(2) | ||||
| Legacy | .NET | Enterprise | Old monolith kept alive for a handful of enterprise customers pending migration. | Deprecated |
| Hub | .NET | Enterprise | Legacy integration hub connecting on-prem systems to the cloud platform. | Deprecated |
| Stack: Next.js(3) | ||||
| Docs | Next.js | Platform | Public documentation site built with Fumadocs and the shared UI components. | Active |
| Insights | Next.js | Data | Analytics dashboards aggregating product telemetry across every Platform app. | Active |
| Pulse | Next.js | Data | Real-time monitoring and alerting service for the data ingestion pipelines. | Active |
| Stack: React(3) | ||||
| Studio | React | Platform | Internal design-system playground and component showcase for the Platform team. | Active |
| Console | React | Platform | Admin console for tenant configuration, feature flags and access control. | Active |
| Flow | React | Platform | Workflow builder that lets teams automate repetitive operational tasks. | Active |