CrabTalk vs Boat.
Linux sandboxes + integrated agents
Boat supplies full Ubuntu virtual machines for agents and code, with environments, snapshots and integrated agent workflows. CrabTalk hosts defined Rust/Wasm tools with service-owned SQLite and precise per-call budgets.
Which fits your work?
CrabTalk
- Calling existing integrations or a defined shared operation
- Small memory budgets per tool invocation
- Persistent SQL records shared independently of a machine
Boat
- An agent editing a repository or running arbitrary commands
- A full Linux environment with installed dependencies
- Machine snapshots, forks and integrated coding agents
Use both.
An agent running in Boat can call a CrabTalk tool through MCP or HTTP to use an existing integration or shared result index. Boat keeps the repository, dependencies and build processes; the service can keep records used by other callers.
Capabilities side by side.
| Capability | CrabTalk | Boat |
|---|---|---|
| Execution boundary | A defined tool in a deployed service | A full Linux VM for arbitrary programs |
| Memory scope | 1–128 MiB per tool; lower one call in code | RAM selected through the sandbox machine size |
| Persistent data | SQLite and values by key per service | Machine files and saved snapshots |
| Dependencies | Rust/Wasm using the registered host APIs | Install packages and run Linux tools |
| Agent operation | Discover and call services over MCP or HTTP | Run integrated agents or control the VM through CLI/SDK |
| Reuse | Shared tool deployment or private template copy | Reusable environments, snapshots and forks |
| Scheduling scope | Bounded tools with crons and wakes | Commands, background work and always-on services |
Build a repository and share its result.
Compiling a repository needs a general execution environment. Recording a small result can be a shared tool operation.
CrabTalk
- Choose or define a build-result SQL service
- Run the repository build in the caller’s build environment
- Record the result through HTTP or MCP
Boat
- Start a sandbox with the repository and dependencies
- Run the agent or build commands
- Keep results on disk or publish them to the chosen shared store
CrabTalk vs Boat pricing.
CrabTalk
Callers pay a published tool’s price when it has one. Service owners pay runs, CPU, reserved memory-time and database rows, plus upstream provider usage. Memory is reserved per tool and can be lowered once for a smaller call.
Boat
Boat Small provides 2 vCPU, 4 GB RAM and 51 GB disk at $0.018/hour, billed by the second while running, including idle time. The $20 monthly plan minimum is credited toward VM time. Excess starts, saved snapshots and optional AI credential proxy usage can add charges; model usage is separate.
The calculator reuses one Small VM with auto-stop disabled and includes the selected idle gaps. Plans, optional snapshots, excess starts and startup are excluded. One VM can perform many operations, and concurrent calls can share its resources.
Limits that affect the choice.
- CrabTalk is not a Linux machine. Its tools have at most 100 ms CPU, 128 MiB memory and a 60-second call-chain deadline, excluding repository builds and general shell sessions.
- Boat already preserves filesystem state and offers snapshots. Its documented snapshots exclude running programs, memory and open ports; stopped-disk retention and saved snapshots have different policies.
- Per-call budgets and a full machine serve different execution needs. Compare the actual workload rather than claiming every sandbox session can become one small tool call.
Questions about CrabTalk and Boat.
Can CrabTalk run an arbitrary coding agent?
Not as a general machine process. An external agent calls CrabTalk tools; Boat can host the agent, its repository and its command execution environment.
Does Boat already keep state?
Yes. It preserves machine files through its documented stop and snapshot lifecycle. That is a different boundary from a service database shared through tools.
Do I need to build a connector before using both?
Not when an available service already covers the operation. The agent inside Boat can call it using the same MCP or HTTP path as another client.
Sources.
Checked .