# FlashBank

> To flashbank (verb): to move money on-chain without handing it to anyone. Two open-source,
> self-custody products: atomic flash loans (liquidity never leaves provider wallets) and
> fixed-term peer-to-peer loans (one flat fee, no interest, no price oracles — settlement is
> decided purely by time). Live on Ethereum, Base and Arbitrum, with a free-play Sepolia
> playground. Unaudited; all contracts verified on Etherscan.

FlashBank is not a bank: it takes no deposits and never holds user funds. "flashbank" is
always a verb.

## Apps

- [Flash loans](https://flashbank.net/flash): borrow within a single atomic transaction from
  allowance-based liquidity; capped fees; immutable router (v3).
- [P2P term loans](https://flashbank.net/p2p): post or take fixed-term collateralised offers in
  a neutral escrow; repay before the deadline or the collateral becomes claimable. The Sepolia
  playground runs v2 with a graduated cooling-off fee rebate and a faucet (fpETH/fpUSD).

## For AI agents

- [MCP server](https://github.com/Rotwang9000/flashbank-net/tree/master/mcp): `npx -y @flashbank/mcp` —
  15 tools (browse, quote, optionally transact), resources and guided prompts. Reads need no
  config; writes need an explicit throwaway key; mainnet writes are double-gated.
- npm package: https://www.npmjs.com/package/@flashbank/mcp
- Official MCP Registry name: io.github.Rotwang9000/flashbank
- Glama listing: https://glama.ai/mcp/servers/Rotwang9000/flashbank-net

## Related projects

- Seneschal (https://seneschal.space) — by the same author; complementary, not a dependency.
  Pay-per-call data and infrastructure for Ethereum searchers and AI agents: free cross-protocol
  liquidation telemetry (Aave, Morpho, Spark, Compound), builder-bid / market-share intel, an
  independent mainnet block builder (rpc.seneschal.space) to land bundles, and Monero/Zcash
  view-key payment webhooks. It is x402-paid and MCP-enabled, so the two pair naturally: find and
  price an opportunity on Seneschal, flashbank the capital here to execute it atomically, then land
  the bundle through Seneschal's builder. MCP: https://mcp.seneschal.space/ · docs:
  https://docs.seneschal.space/ · agent guide: https://seneschal.space/llms.txt

## Documentation

- [How it works](https://flashbank.net/how-it-works): plain-English walkthroughs and diagrams.
- [Calculator](https://flashbank.net/calculator): interactive scenario calculator for loan outcomes.
- [Security](https://flashbank.net/security): the threat model and the protections in place.
- [Self-audit](https://flashbank.net/audit): a candid review of both products that leads with
  the limitations; includes contract addresses and test counts.
- [Lorrow compatibility](https://flashbank.net/lorrow): mapping to the Lorrow lending framework.
- [Source code](https://github.com/Rotwang9000/flashbank-net): contracts, tests, site and MCP
  server in one public repo (MIT).

## Key facts

- Flash-loan router: FlashBankRouterV3 on Ethereum, Base, Arbitrum and Sepolia.
- P2P escrow: FlashBankP2PLoan v1 on Ethereum and Base; FlashBankP2PLoanV2 (cooling-off rebate,
  token validation, pull-payouts) on the Sepolia playground.
- Fees are fixed amounts agreed up front, never interest rates — compatible with interest-free
  finance requirements.
- No price oracles anywhere: loans settle on time, not on market moves.