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Functions we've written so you don't have to
Exporting empty TVL - if your project has filtered TVL only, here's an easy way to export core TVL as empty.
module.exports = {
bsc: {
tvl: () => ({}),
staking
}
};
if you have a known set of tokens and contract addresses, there are few ways to fetch and export it as tvl using
sumTokensExport
if single contract and multiple tokens
const { sumTokensExport } = require("./helper/unwrapLPs");
module.exports = {
fantom: {
tvl: sumTokensExport({
owner: '0x...,
tokens: [ '0x...',... ],
}),
}
};
if there are multiple contracts to look up:
const { sumTokensExport } = require("./helper/unwrapLPs");
module.exports = {
fantom: {
tvl: sumTokensExport({
owners: ['0x...', '0x...', ...],
tokens: [ '0x...',... ],
}),
}
};
if all contracts dont share same set of tokens:
const { sumTokensExport } = require("./helper/unwrapLPs");
module.exports = {
fantom: {
tvl: sumTokensExport({
tokensAndOwners: [
// [tokenAddress, ownerContractAddress]
['0x...', '0x...'],
['0x...', '0x...'],
],
}),
}
};
if any of these tokens are LP tokens, set
resolveLP: true
to resolve them into underlying tokensgetTokenBalance is used for getting a solana account's balance of a particular token.
const { getTokenBalance } = require("../helper/solana");

DefiLlama-Adapters/index.js at main · DefiLlama/DefiLlama-Adapters
GitHub
Example Solana Adapter
DefiLlama uses a wide variety of sources to price tokens, such as CoinGecko and chain calls to price exotic tokens such as Curve and uniswap LPs. If you find that a token is missing and it's not getting priced in your adapter, just let us know in our discord!
To count the TVL of LP token balances, the positions must be unwrapped into their underlying tokens.
const { sumTokens2 } = require('../helper/unwrapLPs');
const balances = {};
...
return sumTokens2({ balances, tokensAndOwners: [...], api, resolveLP: true })

DefiLlama-Adapters/index.js at main · DefiLlama/DefiLlama-Adapters
GitHub
Example Unwrap Uni V2 Adapter
For lesser known EVM chains sometimes the block height wont be available in the third parameter passed to the adapter's TVL function. In this case you can use getBlock to fetch the block height.
const { getBlock } = require('../helper/http');
block = await getBlock(timestamp, chain, chainBlocks);

DefiLlama-Adapters/projects/atlendis/index.js at main · DefiLlama/DefiLlama-Adapters
GitHub
Example Get Block Adapter
Last modified 5mo ago