Privacy Policy
Last updated: August 2026
ChainTools has no accounts and holds no funds. It does keep a record of how the site is used, so that broken lookups and failed swaps get found and fixed. The contracts you explore are part of that record. The explorer needs no wallet; the swap tools connect to one only when you ask them to.
Usage logging
Activity on the site is logged — which pages get opened, what gets clicked, and recordings of how people move through the site. It exists to catch bugs, see which tools get used, and decide what to build next. Logging runs on every visit and cannot be switched off from inside the site; browser privacy settings, tracker blockers and private browsing all work here if you would rather not be included. Recordings are deleted automatically after 30 days.
What you look up
Contract addresses, code hashes and function selectors sit in the page address, so what you explore forms part of the usage record above. Those lookups also travel onward to the services that answer them — Sourcify, block explorers and public RPC endpoints — under their own terms. Verified source, ABIs and selector mappings are cached in our database: that cache holds public blockchain data, keyed by contract and never by visitor.
No account, and never your keys
There is nothing to sign up for. The explorer is read-only and asks for no wallet at all. The swap tools do connect to a wallet, but ChainTools is non-custodial: it holds no funds, has no backend wallet, and never asks for a private key or a seed phrase. Every swap is a transaction you approve in your own wallet — anything claiming to be this site and asking for a seed phrase is not this site.
Your wallet address
Connecting a wallet under Swap gives the interface your public address. It is used to read balances, check token allowances and build the transaction you sign. Nothing happens until you connect, and disconnecting ends it.
Swaps are read
When a swap confirms or fails, the trade and the wallet that made it are recorded, so we can see how routing performs in practice and fix the paths that fail. The trade itself is public on-chain either way.
Cookies and browser storage
The logging tools set cookies and use local storage so that several pages viewed in one sitting count as one visit. The swap tools add a little more, all of it local: your swap history, kept on your device and keyed by wallet address, plus your slippage setting and the tokens you recently used or imported. None of that is uploaded, which is why swap history is tied to this browser. Clearing site data in your browser removes all of it.
The contact form
The name, email address and message you submit are passed to the site operator so the message can be read and answered. They are used for that and nothing else — no mailing list, no onward sharing.
Who else is involved
The logging, the hosting and the contact relay are run by third-party service providers on our behalf, and chain data comes from Sourcify, public block explorers and public RPC providers, each under its own terms. Quoting and swapping adds a few more, also each under its own terms: your wallet provider and the network that connects it, public token lists, a price source for the USD figures, and the blockchain itself, where every transaction is permanently public. Nothing is sold, and nothing is passed to advertising networks.
Your rights
If you are in the EU, EEA or UK you may ask what is held about you, ask for it to be deleted, or object to it being kept. Because none of it is tied to an identity unless you sent us one, finding your records may need the rough time and pages of your visit. Requests go through the contact form.
Changes
This policy is updated as the site changes. The date at the top reflects the most recent revision.