The platform that refuses to ship what's broken.
Not a framework. Not a library.
What Mycel is:
A substrate every service inherits from.
Eleven invariants, enforced at build.
Drift rejected before it ships.

Enforced
Build fails if a service drifts. Same gate for human and AI code.
Inherited
Auth, schema, observability, tenancy — solved once, inherited by every service.
Sovereign
Air-gapped or cloud. Images built offline, delivered on physical media.
The problem
AI moves fast. Foundations drift faster.
One team solves auth. Another solves it differently. A third with AI. Two years later: five implementations, one incident.
Mycel removes the accumulation point.
Air-gapped
Some deployments can't phone home. By law.
Built for government, defence, and regulated finance — where “air-gapped” is a legal requirement, not a preference.
What's included
Four modules. Deployed together.
mycel_coreRuntime, build system, cross-cutting infrastructure.mycel_iamIdentity, authorisation, tenancy, audit.mycel_enterpriseEnterprise capabilities on the platform.mycel_sovereignAir-gapped and on-premise delivery.