Cup’n’String and Docker Desktop
This is a practical comparison for buyers who already use Docker Desktop and want to govern AI agent access to local containers. Docker Desktop is a container runtime and developer tool; Cup’n’String helps discover, govern, audit, and control AI agent interaction with containers and exposed local services.
What both products do
Both are part of a modern developer workstation. Docker Desktop runs containers; Cup’n’String can see those containers (read-only) and govern how AI tools interact with them.
Where they differ
| Capability | Cup’n’String | Docker Desktop |
|---|---|---|
| Container runtime | Not the primary focus | Designed for |
| Container / service discovery for governance | Designed for | Runtime only |
| AI coding agent governance | Designed for | Not the primary focus |
| MCP server governance | Designed for | Not the primary focus |
| Local model endpoint governance | Designed for | Not the primary focus |
| Policy on AI access to containers | Designed for | Not the primary focus |
| Host firewall orchestration | Designed for | Not the primary focus |
| Credential shielding | Designed for | Not the primary focus |
| Reverse tunnel for private dev services | Designed for | Not the primary focus |
| Audit evidence for AI activity | Designed for | Not the primary focus |
| Self-hosted deployment | Designed for | Local tool |
Capability descriptions reflect each product’s primary design focus, not a scorecard. Categories overlap and many teams use complementary tools.
When to use both together
Docker Desktop runs your containers; Cup’n’String governs how AI tools interact with them. Cup’n’String auto-discovers Docker via the Docker-compatible socket, inventories exposed services, applies policy to AI access, and can expose approved ports through secure tunnels — without replacing Docker.
Checklist
- Do you need to govern AI activity on developer workstations?
- Do you need MCP visibility?
- Do you need local Docker / service discovery?
- Do you need local model endpoint control?
- Do you need credential shielding?
- Do you need host firewall orchestration?
- Do you need audit evidence?
- Do you need self-hosting?
Frequently asked questions
Does Cup’n’String replace Docker Desktop?
How does it discover Docker?
Can it expose a container securely?
Evaluate Cup’n’String for AI agent security on developer workstations
See how endpoint-level AI governance complements your existing stack.