Choose Karaka when
- Your product already has a Node backend and you want DSH.
- Product actions and authorization should stay in that backend.
- You want replaceable runtime parts and can operate an alpha service.
Karaka or AWS AgentCore?
Use Karaka for a self-hosted DSH agent beside your Node backend. Use AgentCore when AWS should provide the runtime, isolation, identity, memory, policy, and observability.
Choose AWS AgentCore when
- You want managed isolation, scaling, and deployment.
- AWS identity, memory, gateway, policy, and observability fit your stack.
- You prefer managed operations to replacing runtime internals.
What differs
| Area | Karaka | AWS AgentCore |
|---|---|---|
| Runtime | A plugin-composed DSH process beside your Node backend. | Managed isolated sessions on AWS infrastructure. |
| Product access | Use Node functions directly. Connect OpenAPI, Lambda, Smithy, API Gateway, or another service through an MCP server or DSH plugin. | Managed Gateway adapters for MCP, OpenAPI, Lambda, Smithy, and API Gateway. |
| Control | Replace the model, loop, storage, tools, skills, and telemetry through plugins. | Use AgentCore services independently or together with supported frameworks and models. |
| Operations | You run TLS, scaling, backups, identity, and monitoring. | AWS runs isolation and scaling; Identity, Policy, Memory, and Observability are managed services. |
| Cost | Open source; you pay for your infrastructure. | AWS's 60-second support-agent example costs $0.0007235 per session for runtime: about $72 per 100,000 sessions. Model, tool, storage, and CloudWatch charges are separate. |
Neither?
If one model call or a short tool loop solves the job, keep it inside your backend.
Sources
Reviewed September 5, 2026. Karaka is alpha software.