railcheck

Local privacy advice for RAILGUN shields and unshields.

railcheck tells you if a shield or unshield amount can link back to you, before you send. The check runs on your device. It never asks for an address.

• Web check: railcheck.xyz
• Wallet SDK: add the same check to a wallet. See For wallets.

This preview covers RAILGUN WETH on Ethereum mainnet and Sepolia.

Packages

Package	Function
@railcheck/core	The advice engine. It makes no network calls.
@railcheck/builder	Builds the pool of shields from your own RPC.
@railcheck/kohaku	Gets advice before prepareShield and prepareUnshield in a Kohaku-style plugin.

Privacy

Your amount and answers stay on your device. The check has no server, no analytics and no wallet connection. For the method, the data and the limits, see How it works.

A score is the output of a model. A Low score does not guarantee privacy.

Repository

Folder	Content
lib/	@railcheck/core
packages/	@railcheck/builder and @railcheck/kohaku
src/, public/	The website. The text pages are Markdown in src/.
scripts/	The site build and the daily pool data update
examples/sepolia-cycle/	A real wallet flow on Sepolia: build the pool, get advice, shield and unshield
tests/	Tests

Run locally

You need Node.js 22 or later. There are no runtime dependencies. The build uses marked.

npm ci --ignore-scripts
npm test
npm run build
npm run dev

Open http://127.0.0.1:4173.

npm run data:update updates the pool data at one block, with 64 confirmations. It needs an RPC in RPC_URL.

License

MIT. The Geist fonts use the SIL Open Font License.

railcheck is an independent project. It is not related to RAILGUN.