Published on September 2, 2026
This authorization lets an automated agent — software you run, holding its own wallet — buy tax lien certificates on LienFi on your behalf. It applies in addition to the LienFi Policies — which, as of this version, are the Terms and Conditions, the Wallet Connection Consent and the Privacy Policy the Terms incorporate. Those govern every purchase your agent makes exactly as they govern one you make yourself. By signing this authorization you confirm that you have read and accepted each of them, and that you accept them for every purchase made through the wallet named in your signed authorization. The risk disclosures for tax liens, tax deeds and digital assets are in sections 4 and 5 of the Terms.
Your agent's wallet also signs, from its own key, the same acceptance of the LienFi Policies that a user's wallet signs when it connects to LienFi — once for each of them, at the version published at the time — when the agent registers, and again whenever one of them is republished. LienFi will not register an agent without that acceptance, and will not price a purchase for an agent whose acceptance is out of date until it has signed the current versions.
Everything below is specific to authorizing an agent. It does not replace or limit anything in those documents.
There is no approval step between your agent deciding to buy and the money moving. LienFi does not review the merits of what your agent buys and does not assess whether any lien is suitable for you. You are responsible for every purchase it makes, on the same terms as if you had made that purchase yourself, and a completed purchase is final — an agent can commit funds faster than you can intervene.
Your signed authorization names a per-purchase limit in USDC. LienFi will not price a purchase above that amount for this agent, so no single purchase can exceed it.
It is not a total. Your agent may make any number of purchases, each up to that limit, for as long as this authorization lasts. If your authorization also names a cumulative amount, that figure is recorded with your authorization but LienFi does not currently enforce it — do not rely on it as a spending cap.
You may hold up to 25 agent authorizations at one time. Each carries its own per-purchase limit, and nothing limits your spending across them.
The practical limit on what your agent can spend is what its wallet holds. Fund it with only what you are willing to commit, and do not use a personal, treasury or operator key as an agent wallet.
You pay the listed price for a lien. There is no buyer premium. When a lien redeems, LienFi takes a fee on the gain over what you paid — currently 10%, floored at zero, so a lien that redeems below what you paid is charged nothing. That rate is read from the fee schedule on chain at the time of redemption and can change, so your agent should read the current rate rather than assuming it.
Most yield and return figures the LienFi API returns are gross of that fee. Your agent is reading the API rather than the website, so it must apply the fee itself to know what you would actually keep. This is the most common way an automated valuation of a LienFi lien comes out wrong, and it is wrong in the flattering direction.
A certificate your agent buys is delivered to the agent's wallet, not to your account wallet. It stays there until the lien redeems, which is routinely far longer than this authorization lasts.
Two things follow. The agent wallet must grant LienFi's vault permission to move the certificate, or redemption will fail outright when the lien matures. And if that wallet's key is exposed, the certificates are exposed with it — not just whatever cash is left.
It names one agent wallet and one blockchain network, and it expires automatically no more than 90 days after you sign it. When it expires your agent stops being able to buy until you sign a new one. Authorizing a second wallet takes a second authorization.
Expiry does not move your certificates. They remain in the agent wallet, and that wallet still needs to be operational for them to be redeemed.
You can revoke this authorization at any time. Revoking ends LienFi's consent coverage for that wallet, and LienFi will refuse to price further purchases for it. Because a purchase on the LienFi marketplace cannot execute without a LienFi-signed price bound to the buyer's address, a revoked agent cannot buy another certificate on LienFi.
Revocation is not instant, and it does not stop the wallet from transacting. A price quote already issued to your agent stays valid for five minutes, so a purchase already in flight may still complete. And revoking does nothing to what the wallet already holds: the contracts that list, sell and transfer certificates are permissionless, and LienFi does not hold your agent's key.
So if that key may be exposed, revoking here will not protect you. Move the certificates and the funds out of the wallet.
LienFi records this authorization, the signature you gave it, your agent wallet's proof that it controls its own key, your agent wallet's own signed acceptance of the LienFi Policies, the acknowledgment your agent signs for each lien it buys, and any revocation you give. LienFi keeps those records for compliance, audit, tax and legal purposes.