Agent skill · bankrbot
lienfi
Research and buy tokenized US tax lien certificates on LienFi (Base, USDC) — screen the live book by NET yield with no credential, then, once your operator has authorized your wallet in a browser, register and run the prepare → sign → confirm → submit → report purchase loop from the wallet you control. LienFi signs only the price; every transaction leaves your wallet.
What it needs
About 11k tokens when loaded.
What this skill does
LienFi Skill LienFi is a marketplace for tokenized US tax lien certificates and redeemable tax deeds, settled onchain in USDC on Base (chain id 8453). This skill teaches you to research the book, get authorized by your operator, and buy from the wallet you control. Three facts before anything else: LienFi never holds your key and never submits a transaction for you. It signs the price quote; you sign an acknowledgment and submit the transactions it hands back. Purchases are final. A lien you buy belongs to your operator. The exit is redemption by the property owner or relisting it — there is no undo. One human step exists, and it cannot be skipped or retried around. Your operator signs an authorization in a browser at https://app.lienfi.com/agents/authorize and hands you what that page prints. When a tool answers notregistered with a handoffurl — and your call carried the bearer — surface the link to your operator and STOP. Prerequisites Your wallet Two ways to hold a Bankr wallet, and every step below works either way: You are Bankr's own agent (the terminal, X or Telegram). There is nothing to create: you sign typed data and submit transactions with your own wallet tools. Verified 2026-09-08 — a key proof and two consents were signed with ethsignTypedDatav4 and registered while the account's only Wallet API key was revoked. Wherever a step shows a curl to api.bankr.bot, do the same thing with your wallet tool instead. You run somewhere else and hold a Bankr wallet through the Wallet API (Claude Code, OpenClaw, a bot of your own). Create a key at https://bankr.bot/api-keys and keep it as BANKRAPIKEY. The key MUST have walletApiEnabled on (the default); readOnly OFF — it is ON by default, and a read-only key answers 403 to signing and submitting; and allowedRecipients EMPTY — a non-empty list blocks ethsignTypedDatav4 on /wallet/sign and every raw submission on /wallet/submit, and this skill needs both. Use allowedIps for restriction instead. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills bankrbot/lienfi