{"name":"Obol","description":"Verified blockchain-data lookups, paid per request with USDC on Base.","url":"https://obol.danieldutoit.net","version":"0.1.0","protocolVersion":"0.3.0","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"skills":[{"id":"base-address-snapshot","name":"Base address snapshot","description":"Return ETH and canonical Base USDC balances at one observed block with two-provider consistency metadata. Costs 0.001 USDC over x402.","tags":["base","usdc","balance","x402"],"examples":["GET https://obol.danieldutoit.net/v1/base/address-snapshot?address=0x..."]},{"id":"base-network-status","name":"Base network status","description":"Return a Base block number, hash, and time reconciled after payment against two pre-probed distinct-operator endpoints. Costs 0.001 USDC over x402 and requires no parameters.","tags":["base","network","block","x402"],"examples":["GET https://obol.danieldutoit.net/v1/base/network-status"]},{"id":"evm-address-snapshot","name":"Multi-chain EVM address snapshot","description":"After payment, return a native-currency balance reconciled at one common block against two pre-probed distinct-operator endpoints. Costs 0.001 USDC over x402.","tags":["evm","multi-chain","balance","x402"],"examples":["GET https://obol.danieldutoit.net/v1/evm/address-snapshot?chain_id=10&address=0x..."]},{"id":"sanctions-address-screening","name":"Sanctions address screening","description":"Check an exact blockchain address against public-source EU, OFAC, and UK wallet observations. Entity names are omitted. Costs 0.005 USDC over x402.","tags":["sanctions","compliance","address","x402"],"examples":["GET https://obol.danieldutoit.net/v1/sanctions/address-screening?address=0x..."]},{"id":"kraken-candles","name":"Kraken candles","description":"Return up to 100 newest historical Kraken OHLCV candles for an exact period/base/quote tuple. Costs 0.001 USDC over x402.","tags":["kraken","ohlcv","markets","x402"],"examples":["GET https://obol.danieldutoit.net/v1/markets/kraken/candles?period=60&base=BTC&quote=USD&limit=10"]},{"id":"kraken-orderbook-top","name":"Kraken top-of-book snapshot","description":"Return the best bid, best ask, and spread percentage for one exact historical timestamp/base/quote key. Costs 0.001 USDC over x402.","tags":["kraken","orderbook","markets","x402"],"examples":["GET https://obol.danieldutoit.net/v1/markets/kraken/orderbook-top?timestamp=1788962867&base=BTC&quote=USD"]},{"id":"multi-exchange-orderbook-top","name":"Multi-exchange top-of-book snapshot","description":"Return one normalized best bid, best ask, and spread percentage snapshot or exact miss for an exact allowlisted exchange/timestamp/base/quote key. Costs 0.001 USDC over x402.","tags":["exchanges","orderbook","markets","x402"],"examples":["GET https://obol.danieldutoit.net/v1/markets/orderbook-top?exchange=COINBASE&timestamp=1788962867&base=BTC&quote=USD"]},{"id":"multi-exchange-candles","name":"Multi-exchange candles","description":"Return up to 100 newest historical OHLCV candles for an exact exchange/period/base/quote tuple. Costs 0.001 USDC over x402.","tags":["exchanges","ohlcv","markets","x402"],"examples":["GET https://obol.danieldutoit.net/v1/markets/candles?exchange=KRAKEN&period=60&base=BTC&quote=USD&limit=10"]},{"id":"bitcoin-address-cluster","name":"Bitcoin address cluster","description":"Return one heuristic public-chain cluster assignment for an exact Bitcoin address. Costs 0.003 USDC over x402.","tags":["bitcoin","clustering","address","x402"],"examples":["GET https://obol.danieldutoit.net/v1/bitcoin/address-cluster?address=1dice8EMZmqKvrGE4Qc9bUFf9PX3xaYDp"]},{"id":"bitcoin-cash-address-cluster","name":"Bitcoin Cash address cluster","description":"Return one heuristic public-chain cluster assignment for an exact Bitcoin Cash address. Costs 0.003 USDC over x402.","tags":["bitcoin-cash","clustering","address","x402"],"examples":["GET https://obol.danieldutoit.net/v1/bitcoin-cash/address-cluster?address=1BpEi6DfDAUFd7GtittLSdBeYJvcoaVggu"]},{"id":"dogecoin-address-cluster","name":"Dogecoin address cluster","description":"Return one heuristic public-chain cluster assignment for an exact Dogecoin address. Costs 0.003 USDC over x402.","tags":["dogecoin","clustering","address","x402"],"examples":["GET https://obol.danieldutoit.net/v1/dogecoin/address-cluster?address=D5EQRCnPMXmRvUoZwC7gu7fYspean3PQ9a"]},{"id":"litecoin-address-cluster","name":"Litecoin address cluster","description":"Return one heuristic public-chain cluster assignment for an exact Litecoin Base58Check address. Costs 0.003 USDC over x402.","tags":["litecoin","clustering","address","x402"],"examples":["GET https://obol.danieldutoit.net/v1/litecoin/address-cluster?address=La11a9B6w6dykTnst5MZAy78DfiAmUVL8G"]},{"id":"cardano-transaction","name":"Cardano transaction","description":"Return one bounded Cardano mainnet transaction and its block fields for an exact 64-character hexadecimal hash. Costs 0.003 USDC over x402.","tags":["cardano","transaction","block","x402"],"examples":["GET https://obol.danieldutoit.net/v1/cardano/transaction?hash=a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0"]},{"id":"cardano-stake-rewards","name":"Cardano stake rewards","description":"Return up to 100 newest Cardano mainnet stake rewards for an exact stake address, reward type, and earned-epoch range of at most 1,000. Costs 0.003 USDC over x402.","tags":["cardano","staking","rewards","x402"],"examples":["GET https://obol.danieldutoit.net/v1/cardano/stake-rewards?stake_address=stake1uyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqg6jacpu&reward_type=member&earned_epoch_min=1000&earned_epoch_max=2000"]},{"id":"solana-transaction","name":"Solana transaction","description":"Return one bounded public Solana mainnet transaction for an exact canonical base58 signature and slot. Costs 0.003 USDC over x402.","tags":["solana","transaction","slot","x402"],"examples":["GET https://obol.danieldutoit.net/v1/solana/transaction?signature=1111111111111111111111111111111111111111111111111111111111111111&slot=42"]},{"id":"xrp-transaction","name":"XRP transaction","description":"Return one bounded public XRP mainnet transaction for an exact hash, ledger number, and transaction index. Costs 0.003 USDC over x402.","tags":["xrp","transaction","ledger","x402"],"examples":["GET https://obol.danieldutoit.net/v1/xrp/transaction?transaction_hash=a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0&block_number=103400001&tx_index=7"]},{"id":"ethereum-complex-flow","name":"Ethereum complex flow","description":"Return up to 100 newest public aggregate flow observations for one exact Ethereum address pair, asset, and block range of at most 100,000 blocks. Costs 0.003 USDC over x402.","tags":["ethereum","flow","aggregate","x402"],"examples":["GET https://obol.danieldutoit.net/v1/ethereum/complex-flow?from_address=0x0000000000000000000000000000000000000000&to_address=0x0000000000000000000000000000000000000000&asset=0x0030b738bc1de21c93ca066340f74a952881e0a4&block_number_min=17783798&block_number_max=17883798"]},{"id":"arbitrum-token-transfers","name":"Arbitrum token transfers","description":"Return up to 100 newest public Arbitrum token transfers for one exact asset and block range of at most 100,000 blocks. Costs 0.003 USDC over x402.","tags":["arbitrum","token","transfers","x402"],"examples":["GET https://obol.danieldutoit.net/v1/arbitrum/token-transfers?asset=0x0030b738bc1de21c93ca066340f74a952881e0a4&block_number_min=17783798&block_number_max=17883798"]},{"id":"address-labels","name":"Hit-conditional address labels","description":"Check exact Ethereum, Bitcoin, or Tron addresses against public-source labels. Misses are free; known hits cost 0.001 USDC over x402.","tags":["ethereum","bitcoin","tron","labels","x402"],"examples":["GET https://obol.danieldutoit.net/v1/address-labels?chain=ethereum&address=0x..."]}]}