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Builder fee data is based on the builder field on attributed fills. total_fees is protocol fee generated by attributed fills, not the builder’s off-chain rev-share payout. Canonical endpoint references:

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Rank Builders by Fees

curl "https://api.polynode.dev/v3/builders?sort=fees&limit=1" \
  -H "x-api-key: $POLYNODE_API_KEY"

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Inspect Builder Trades

curl "https://api.polynode.dev/v3/builders/0x4898df15ec6590495dc6c0fedf951ade3e64001d47f9caf44a64e86fc11959df/trades?limit=1" \
  -H "x-api-key: $POLYNODE_API_KEY"

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Builder Trade Filters

ParameterPurpose
token_idOne outcome token
condition_idAll outcomes in a condition
market_slugMarket URL slug
event_slugAll markets in an event
sidebuy or sell
min_amountMinimum raw maker amount
categoryMarket category
tag_slugMarket tag slug
after, beforeTime range
Builder codes are 32-byte hex tags, not wallet addresses.