World capitals lookup
World capitals lookup: process input with a deterministic local pure function, validate boundaries, and avoid network, devices, or browser state.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Input
Result
Local deterministic result
Enter a value to see the result
What this tool does
- Inspect a local result
- Copy the result to another tool
Example
Input
中国
Output
中国 北京
Results come from deterministic local logic; device, network and permission actions are not executed by the pure function.
Frequently asked questions
Does it use the network?
No, input is processed locally.
Is it reproducible?
Yes, identical input and options produce the same result.
Are device features executed?
No, device and permission actions are explicitly skipped.
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