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DeFi

DeFi

DeFi is an open-source Python package of utilities for DeFi calculations and data queries, including impermanent-loss calculations, staking and farming comparisons, protocol information, TVL history, and CoinGecko and PancakeSwap data.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

DeFi — OpenViST project profile in DeFi.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when you want Python-callable DeFi calculations or examples for querying token and protocol data as part of a script or application.

Who it is for

  • Python developers building DeFi analysis scripts or data features.
  • Analysts comparing strategy assumptions or retrieving token, market and protocol information.

Documented uses

  • Estimate impermanent loss for a token return scenario.
  • Compare modeled buy-and-hold, staking and farming returns using specified inputs.
  • Query CoinGecko for coin IDs, prices, market listings and historical data.
  • Retrieve protocol information and historical TVL, or query PancakeSwap token and pair data.
Before you choose

Requirements & limits

The README documents installation with `pip install defi` and identifies the package as open source under the MIT license.

  • The documented workflow is a Python package installed with pip, not a hosted application.
  • Strategy comparisons depend on input assumptions such as token changes, reward rates, fees and time period.
  • The README includes examples for CoinGecko and PancakeSwap queries as well as protocol and TVL data.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install the package and calculate impermanent loss

Install DeFi and call its documented impermanent-loss calculation with a token return ratio.

Before you start

  • Python and pip
  • The DeFi package installed from the Python package index

Steps

  1. Run the command below.

    Documented command
    pip install defi

  2. In Python, import defi.defi_tools as dft.

  3. Call dft.iloss(0.8) to calculate the example for a stablecoin paired with a token returning -20%.

Expected outcome

The README shows an output of -0.62% for the example input.

Guide limitations

  • The result is a calculation based on the supplied return ratio; it is not a forecast of market performance.
Documentation 1 ↗
Source-based practical guide

Compare buy-and-hold, staking and farming assumptions

Use the documented comparison function to calculate example returns for buy-and-hold, staking and farming.

Before you start

  • Python and pip
  • The DeFi package installed with pip install defi

Steps

  1. Import defi.defi_tools as dft.

  2. Call dft.compare with the documented days, token changes, staking rewards, farming rewards and fees assumptions.

  3. Review the returned buy-and-hold, stake and farm percentages and the displayed best result.

Expected outcome

The README's 20-day example returns percentages for all three strategies and identifies Stake as best under those inputs.

Guide limitations

  • The comparison reflects the supplied assumptions and does not establish actual or future returns.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
15 October 2026
Original website title
gauss314/defi · Official homepage title · retained in its source language
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