🐮 🧑‍🌾 Cowllector v2 🌾

July 14, 2026 · View on GitHub

This is the bot that harvest all strategies from all Beefy's chains:

Cowllectors does NOT focus in to be profitable, so don't expect it to win some profit when it harvests. Cowllector harvest script was create it to bring resilience and consistency in all active vaults strategies, giving at least ONE harvest every 24 hour to every strat in every chain

After every run of harvests in every chain, you can find the harvest report in our discord channel #Harvester

📖 Prerequisites

In order to run the project you need node>=26, pnpm>=11, docker with the docker compose v2, foundry, and git-secrets installed on our development machines

🏗️ Monorepo layout

AppPathDescription
Cowllectorapps/cowllectorHarvest bot (Node/TypeScript)
APIapps/apiREST API (Node/Hono)
Analyticsapps/analyticsGrafana dashboards & alerts (not a pnpm workspace package)
Contractsapps/contractsFoundry/Solidity lens contracts

Root orchestration uses pnpm workspaces + Turborepo.

Root scripts

ScriptDescription
pnpm installInstall all workspace dependencies
pnpm buildBuild all apps
pnpm testFull test suite (lint + typecheck + unit + knip + forge)
pnpm test:lintBiome CI across TS apps + forge fmt check
pnpm test:tsTypeScript typecheck
pnpm test:unitJest unit tests + Foundry tests
pnpm test:unused-exportsKnip unused export check (cowllector)
pnpm formatFormat all TS apps (Biome unsafe) + Solidity (forge fmt)
pnpm format:safeSafe format pass (Biome)
pnpm dev:cowllectorRun harvest script in dev mode
pnpm dev:apiRun API in dev mode
pnpm precommitRun pre-commit hooks manually

🖥️ Local development

To install the application:

pnpm install
lefthook install

# configure the cowllector app
cp apps/cowllector/.env.example apps/cowllector/.env

To start the report database:

pnpm infra:start
pnpm --filter @beefyfinance/cowllector db:migrate

Work on a local fork

# start the fork, copy the generated private key to the .env file
anvil -f 'https://rpc.ankr.com/arbitrum' --accounts 3 --balance 300 --no-cors --block-time 5 --auto-impersonate

# harvest
LOG_LEVEL=debug pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/harvest.ts -c arbitrum

# Run harvest with pretty log parser (pino-pretty also has many formatting and filtering options)
LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/harvest.ts -c base | pnpm --filter @beefyfinance/cowllector exec pino-pretty > debug-pretty.log

# see harvest script options
pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/harvest.ts --help

# unwrap wnative to native
LOG_LEVEL=debug pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/unwrap.ts -c arbitrum

# see unwrap script options
pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/unwrap.ts --help

Use our inspect commands

# get the result of our lens contract 
LOG_LEVEL=debug pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/lens.ts -c zkevm -a 0x000000...
LOG_LEVEL=debug pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/lens.ts --help

# see a contract balance
LOG_LEVEL=debug pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/balance.ts -c zkevm -a 0x000000...
LOG_LEVEL=debug pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/balance.ts -help

Update the addressbook

pnpm update:addressbook

Run all tests

pnpm test

Deploy the lens contract

# deploy and verify the lens contract
forge script apps/contracts/script/DeployLens.s.sol:DeployLens -vvvvvv --slow --account deployer --verify --retries 5 --delay 10 --rpc-url chain --broadcast

🤝 Contributing

We encourage you to contribute to Cowllector!

We recommend to use this commit convention that helps you write your commits in a way that is easy to understand and process by others.

In case you want to contribute, please follow next steps:

  • fork this repo
  • create a new branch and named using conventional commit reference
  • commit your changes using conventional commit
  • push your change in your forked repo
  • create a PR from your new branch directly to our main branch

Adding a new chain

  • update the addressbook and viem: pnpm update:addressbook
  • add the chain in apps/cowllector/src/lib/addressbook.ts if it's not in @beefyfinance/blockchain-addressbook already
  • Fix TS errors pnpm test:ts
    • update apps/cowllector/src/lib/config.ts
    • update apps/cowllector/src/lib/rpc-client.ts
  • apply migrations (only needed locally, migrations are applied on deploy): pnpm db:migrate
  • create an explorer api key (important to verify the lens contract later on)
  • add the rpc url, explorer url and api key in .env
  • inspect the final chain config: LOG_LEVEL=error pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/config.ts -c <chain>
  • test the api is working: LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/api.ts -h 0 -c <chain> > api.log
  • test we can get a contract balance: LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/balance.ts -c <chain> -a 0x03d9964f4D93a24B58c0Fc3a8Df3474b59Ba8557 > balance.log
  • test any on chain action with a fork: anvil -f <rpc url> --accounts 3 --balance 300 --no-cors --block-time 5 --auto-impersonate
  • Deploy the lens contract: forge script apps/contracts/script/DeployLens.s.sol:DeployLens -vvvvvv --slow --account deployer --verify --retries 5 --delay 10 --rpc-url chain --broadcast
    • if this errors try using foundry stable foundryup --version stable
    • if the contract verification failed, retry the forge verify-contract --watch 0x34621B852357B318c75642D558cdC9866cB7F18B --rpc-url chain apps/contracts/src/BeefyHarvestLens.sol:BeefyHarvestLens
    • if that doesn't work, wait for the explorer to detect that this address is a contract, then retry
    • if that doesn't work, go to the explorer and verify manually
      • Grab the standard-json-input content of any other verified lens: forge verify-contract --chain-id 2222 --num-of-optimizations 1000000 --verifier blockscout --verifier-url https://explorer.kava.io/api --etherscan-api-key a --watch --show-standard-json-input 0x2fD8E72e488d6D2Bc770Cf6F74A5d60E44516aaD BeefyHarvestLens > compile.json
      • compiler type: standard json input
      • compiler version: see in apps/contracts/out/BeefyHarvestLens.sol/BeefyHarvestLens.json
      • license: MIT
    • if that doesn't work, idk
  • test we can lens a strategy: LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/inspect/lens.ts -c <chain> -a <strat_address> > lens.log
  • test the harvest script: LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/revenue-bridge-harvest.ts -c gnosis > revenue.log
  • test the harvest script: LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/harvest.ts -c <chain> -a <strat_address> > harvest.log
  • test the unwrap script: LOG_LEVEL=trace pnpm --filter @beefyfinance/cowllector exec tsx ./src/script/unwrap.ts -c gnosis > unwrap.log
  • add a custom rpc url to our heroku deployment _RPC_URL
  • auto-deployed on commit to main

Update monitoring

To update a dashboard:

  • create or update a dashboard it directly in grafana
  • export it as json
  • put the json in apps/analytics/provisioning/dashboards/folders/
    • that will tell grafana to overwrite dashboards with this config on re-deploy

🍕 Community

  • Got Questions? Join the conversation in our Discord.
  • Want to up to date with Beefy? Follow us in Twitter.