generated: '2026-08-13'
method: searched
source: >-
  https://registry.npmjs.org/ metadata endpoints for each package, cross-checked against
  https://docs.hifi.finance/protocol/developers/sdk and https://github.com/hifi-finance
ownership_note: >-
  Mainframe Group, Inc. distributes no packages under a "mainframe" name — the npm scope @mainframe
  is empty (0 packages) and the MainframeHQ GitHub organization publishes 0 public repositories.
  The packages below ship under the @hifi npm scope and the github.com/hifi-finance organization.
  They are attributed to Mainframe because mainframe.co lists Hifi as one of its four portfolio
  products, docs.hifi.finance carries the footer "Copyright (c) 2025 Mainframe Group Inc.", the
  MainframeHQ GitHub organization records its Twitter handle as HifiFinance, and the hifi-finance
  organization holds the repositories for three of Mainframe's four named portfolio products
  (hifi, pooled-nft, spreadsheet/Sheet Heads). This is NOT the separate catalog entry `hifi`
  (hifi.com / production.hifibridge.com), which is a different company.
summary: >-
  Five first-party npm packages, all Solidity contracts plus generated TypeChain/ethers.js
  bindings — a smart-contract SDK, not an HTTP client library. There is no REST/HTTP SDK because
  there is no REST API. Every package is stale: the most recent release across the whole scope is
  2024-01-12, and four of the five backing GitHub repositories are ARCHIVED (read-only).
package_count: 5
official_count: 5
registries:
- npm
packages:
- name: '@hifi/protocol'
  registry: npm
  url: https://www.npmjs.com/package/@hifi/protocol
  official: true
  language: solidity
  kind: smart-contract-sdk
  version: 1.12.0
  published: '2024-01-12'
  first_published: '2021-02-12'
  release_count: 17
  license: BUSL-1.1
  repository: https://github.com/hifi-finance/hifi
  install: yarn add @hifi/protocol
  description: The core Hifi fixed-rate, fixed-term lending protocol.
  note: >-
    Requires Solidity v0.8.4+ and ethers.js; the docs state the packages cannot be used with
    web3.js. Last release 2024-01-12 — over two years stale as of this pass.
- name: '@hifi/flash-swap'
  registry: npm
  url: https://www.npmjs.com/package/@hifi/flash-swap
  official: true
  language: solidity
  kind: smart-contract-sdk
  version: 1.13.0
  published: '2024-01-12'
  first_published: '2021-06-30'
  release_count: 16
  license: LGPL-3.0-or-later
  repository: https://github.com/hifi-finance/hifi
  install: yarn add @hifi/flash-swap
  description: >-
    Flash swap implementations for liquidating underwater accounts, targeting Uniswap V2 and forks.
  note: >-
    Backing standalone repo github.com/hifi-finance/hifi-flash-swap is ARCHIVED (read-only);
    development moved into the hifi monorepo.
- name: '@hifi/amm'
  registry: npm
  url: https://www.npmjs.com/package/@hifi/amm
  official: true
  language: solidity
  kind: smart-contract-sdk
  version: 1.11.0
  published: '2023-01-04'
  first_published: '2021-06-28'
  release_count: 20
  license: BUSL-1.1
  repository: https://github.com/hifi-finance/hifi
  install: yarn add @hifi/amm
  description: Dedicated AMM for market-making hTokens, based on the Yield Space design.
  note: >-
    Backing standalone repo github.com/hifi-finance/hifi-amm is ARCHIVED. Last release 2023-01-04.
- name: '@hifi/proxy-target'
  registry: npm
  url: https://www.npmjs.com/package/@hifi/proxy-target
  official: true
  language: solidity
  kind: smart-contract-sdk
  version: 1.11.0
  published: '2023-01-04'
  first_published: '2021-08-01'
  release_count: 14
  license: LGPL-3.0-or-later
  repository: https://github.com/hifi-finance/hifi
  install: yarn add @hifi/proxy-target
  description: DSProxy target contract with stateless scripts for the Hifi protocol.
  note: >-
    Backing standalone repo github.com/hifi-finance/hifi-proxy-target is ARCHIVED. Last release
    2023-01-04.
- name: '@hifi/react-tos-modal'
  registry: npm
  url: https://www.npmjs.com/package/@hifi/react-tos-modal
  official: true
  language: typescript
  kind: ui-component
  version: 1.1.0
  published: '2022-10-12'
  release_count: null
  license: null
  repository: null
  description: An interactive React modal for displaying terms of service.
  note: >-
    Published in the @hifi scope but not listed on the Hifi SDK docs page and not a protocol
    package; the registry record carries no repository or license field. version/published read
    from registry.npmjs.org 2026-08-13.
absent:
- registry: npm
  query: 'scope:mainframe'
  result: 0 packages
  note: There is no @mainframe npm scope.
- registry: github
  query: github.com/MainframeHQ
  result: 0 public repositories
  note: >-
    The MainframeHQ organization is real (created 2013-06-05, org record last updated 2023-09-22,
    email contact@mainframe.co, blog https://www.mainframe.co/) but ships no public code.
- registry: pypi/rubygems/crates.io/nuget/maven/pkg.go.dev
  result: not checked individually
  note: >-
    The published SDK is Solidity + TypeScript only; the docs name npm as the sole distribution
    channel, so no other language registry was searched.
currency_finding: >-
  The newest first-party release anywhere in the scope is 2024-01-12, and the documented GraphQL
  data endpoint (The Graph hosted service) returns 404 as of 2026-08-13. The SDK docs themselves
  warn the packages are "considered alpha software and may contain bugs or change significantly
  between patch versions."