Rolling your own can be the right call.
The runtime is your product, owning every layer is deliberate, and you have the team to operate it for the long haul.
Mobius vs. building it yourself
A demo agent is easy. A reliable one needs a runtime, team controls, shared state, integrations, cost limits, and review. Here is the backend your team would own instead of Mobius.
| Decision point | Roll your own | Mobius |
|---|---|---|
| Durable execution + scheduling | Assemble scheduling, event dispatch, queueing, and retries | Approved routines, durable event waits, and retries handled |
| Agent harness + sessions | Build the agent loop, session state, compaction, and resume | Managed sessions, transcripts, and versioned skills |
| Integrations + auth | OAuth, webhook verification, and per-tool wiring for each | 30+ managed integrations, auth handled |
| Memory + shared data | Pick stores and build recall, tables, and file handling | Agent memory, shared tables, and managed artifact storage |
| Team controls | Build tenancy, roles, shared operations, and review surfaces | Organizations with shared runs, roles, and review |
| Cost control | Meter tokens and enforce caps on your own | Per-run budgets and spend visibility |
| Model portability | Provider-specific code and your own abstraction | Model-agnostic runtime, swap per step |
| Visibility + review | Ship logs, build dashboards, and wire approval callbacks | Run history, proofs, artifacts, and durable approval gates |
When to build, when to buy.
The backend can be worth owning when it is the product. Otherwise every scheduler, OAuth flow, budget check, state store, and review screen delays the agent your team meant to ship.
Buy the backend, build the agent.
You want to ship agents, not run infrastructure. Mobius operates the backend so your team builds the part that is actually yours.
Skip the backend. Build the agent.
Start free, connect the tools your team already uses, and ship on one managed backend with hard budgets, shared data, and your choice of model.