CrabTalk vs Windmill.
Scripts, workflows + data tables
Windmill turns scripts and flows into APIs, forms and MCP tools, with built-in relational data tables and worker infrastructure. CrabTalk runs Rust/Wasm tools with service-owned SQLite and small per-call budgets.
Which fits your work?
CrabTalk
- Small tool calls with input-specific memory budgets
- SQL state belonging to one service deployment
- Service templates reused by independent callers
Windmill
- Existing scripts and package dependencies
- Multi-step jobs, workflows and internal apps
- Cloud or self-hosted worker infrastructure
Use both.
Keep a Windmill flow for a long-running report or data pipeline and call a CrabTalk service for a small shared lookup or review operation. The same service can remain available to other agents.
Capabilities side by side.
| Capability | CrabTalk | Windmill |
|---|---|---|
| Code unit | A Rust/Wasm service with exported tools | Scripts, flows and applications |
| Execution scope | CPU, rows and memory budgeted per call | Jobs executed by provisioned workers |
| MCP | Discover and call accessible service tools | Expose workspace scripts and flows as tools |
| Relational data | SQLite per service deployment | Built-in data tables or connected SQL databases |
| Dependencies | Rust/Wasm code using host APIs | Script languages and their package dependencies |
| Human interface | Tools called by agents and applications | Generated forms and internal application interfaces |
| Reuse | Shared deployment or private template copy | Workspace scripts, flows and resources |
Review a vulnerability report with another agent.
A tool checks advisory data and saves a triage decision. Large repository scans and report generation are separate workloads from a small lookup.
CrabTalk
- Reuse an available advisory lookup service
- Add SQL tools for triage decisions
- Let agents query and update the shared review state
Windmill
- Use a script with the required advisory client
- Store decisions in data tables or an existing database
- Expose the script or review flow through MCP
CrabTalk vs Windmill pricing.
CrabTalk
Hosting charges follow runs, CPU, reserved memory-time and database rows. The reservation belongs to each call and can be lowered once by its code.
Windmill
Windmill pricing distinguishes cloud and self-hosted editions, builder access and compute units tied to provisioned workers. Running open-source infrastructure also has hosting costs.
Model worker capacity and utilization for Windmill, and actual call budgets for CrabTalk. Windmill is outside the calculator; worker memory is shared capacity for successive jobs.
Limits that affect the choice.
- CrabTalk tools have at most 100 ms CPU and 128 MiB memory. Package-heavy scripts, large scans and long computations may fit Windmill’s worker model better.
- Windmill has built-in relational data tables and persistent storage options. Database availability and MCP support are shared capabilities.
- A script does not become a CrabTalk tool unchanged. Porting requires Rust/Wasm host APIs and a review of the script’s dependencies and resource needs.
Questions about CrabTalk and Windmill.
Can Windmill expose scripts as MCP tools?
Yes. Its MCP server exposes workspace scripts and flows, with scope controls. Compare deployment boundaries, worker execution and data ownership.
Does Windmill require an external database for every workflow?
No. It provides data tables and several storage options. Existing SQL databases can also be connected as resources.
When should I keep a script on Windmill?
When its language, packages, runtime or internal app interface are already useful. A separate CrabTalk service makes sense for a small reusable operation with its own state and budgets.
Sources.
Checked .