# Services from logicnodes.io on Zero

> logicnodes.io serves 32 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/logicnodes.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/logicnodes.io/health.json

## Services

- [LogicNodes EVM Balance](https://www.zero.xyz/c/logicnodes-evm-balance-c850b1a1/llms.txt): $0.002/call via x402. Returns native and ERC-20 token balances for a given address on any EVM chain at a specified block
- [LogicNodes EVM Calldata Decoder](https://www.zero.xyz/c/logicnodes-evm-calldata-decoder-8ea442a4/llms.txt): $0.001/call via x402. Decodes raw EVM transaction calldata into human-readable function names and parameter values using a provided ABI or human-readable signatures
- [LogicNodes Aptos Transaction Simulate](https://www.zero.xyz/c/logicnodes-aptos-transaction-simulate-cc494a1e/llms.txt): $0.005/call via x402. Simulates an Aptos Move function call to predict gas usage and outcome before submitting it on-chain
- [LogicNodes EVM Block Info](https://www.zero.xyz/c/logicnodes-evm-block-info-11eec952/llms.txt): $0.001/call via x402. Retrieves detailed block data for a specified EVM-compatible chain at a given block height or tag (latest, safe, finalized)
- [LogicNodes EVM Token Metadata](https://www.zero.xyz/c/logicnodes-evm-token-metadata-2cd138da/llms.txt): $0.002/call via x402. Fetches on-chain metadata for an EVM token (name, symbol, decimals, etc.) at a specified block on any supported EVM chain.
- [LogicNodes EVM Nonce Lookup](https://www.zero.xyz/c/logicnodes-evm-nonce-lookup-88609b58/llms.txt): $0.001/call via x402. Returns the current transaction nonce for an EVM address at a specified block on any supported EVM chain
- [LogicNodes Aptos View Function Caller](https://www.zero.xyz/c/logicnodes-aptos-view-function-caller-3e9d6d07/llms.txt): $0.002/call via x402. Calls a read-only (view) function on the Aptos blockchain and returns the exact result as of a specified ledger version
- [LogicNodes EVM Transaction Receipt Lookup](https://www.zero.xyz/c/logicnodes-evm-transaction-receipt-lookup-1d7b6ec5/llms.txt): $0.002/call via x402. Fetches the full transaction receipt for an EVM transaction hash on a specified chain
- [LogicNodes EVM Spend Report](https://www.zero.xyz/c/logicnodes-evm-spend-report-3d783f22/llms.txt): $0.005/call via x402. Generates a token spend/receive report for a wallet address on an EVM chain over a specified block range
- [LogicNodes Interest Calculator](https://www.zero.xyz/c/logicnodes-interest-calculator-8e776c42/llms.txt): $0.001/call via x402. Computes simple or compound interest for a given principal, rate, and time period with configurable compounding frequency, precision, and rounding rules
- [LogicNodes Random From Block](https://www.zero.xyz/c/logicnodes-random-from-block-d49ed308/llms.txt): $0.002/call via x402. Generates one or more verifiable random numbers derived from a specified EVM blockchain block hash, using an optional salt for uniqueness.
- [LogicNodes Payment Verify](https://www.zero.xyz/c/logicnodes-payment-verify-717a99f1/llms.txt): $0.002/call via x402. Verifies that a specific on-chain payment transaction meets expected conditions (asset, chain, recipient, payer, amount) for EVM networks
- [LogicNodes EVM Logs](https://www.zero.xyz/c/logicnodes-evm-logs-c9b8531f/llms.txt): $0.003/call via x402. Fetch on-chain event logs for a given EVM contract address and topic filters across a specified block range
- [LogicNodes Aptos Name Resolver](https://www.zero.xyz/c/logicnodes-aptos-name-resolver-14fa353b/llms.txt): $0.001/call via x402. Resolves Aptos Name Service (ANS) names to addresses or addresses to names on Aptos mainnet or testnet
- [LogicNodes Business Days Calculator](https://www.zero.xyz/c/logicnodes-business-days-calculator-4143c62f/llms.txt): $0.001/call via x402. Counts business days between two dates, adds business days to a date, or checks if a date is a business day — with configurable weekend and holiday rules.
- [LogicNodes EVM Token Allowance](https://www.zero.xyz/c/logicnodes-evm-token-allowance-a26d4fa7/llms.txt): $0.002/call via x402. Queries the ERC-20 token allowance granted by an owner address to a spender address on any supported EVM chain at a specified block
- [LogicNodes Aptos Transaction Status](https://www.zero.xyz/c/logicnodes-aptos-transaction-status-97f0e9e7/llms.txt): $0.001/call via x402. Looks up the status of an Aptos blockchain transaction by its hash on mainnet or testnet
- [LogicNodes EVM Log Decode](https://www.zero.xyz/c/logicnodes-evm-log-decode-c7e2bb1e/llms.txt): $0.001/call via x402. Decodes a raw EVM event log into human-readable fields using a provided ABI and log topics/data
- [LogicNodes Loan Calculator](https://www.zero.xyz/c/logicnodes-loan-calculator-24b77161/llms.txt): $0.001/call via x402. Computes amortized loan payment schedules given principal, annual rate, and term, returning exact decimal results with configurable rounding for AI agents.
- [LogicNodes Aptos Transaction Decode](https://www.zero.xyz/c/logicnodes-aptos-transaction-decode-2d70b8b6/llms.txt): $0.002/call via x402. Decodes and interprets an Aptos Move function call — including its arguments and type arguments — into a human-readable, structured representation.
- [LogicNodes EVM Contract Type Detector](https://www.zero.xyz/c/logicnodes-evm-contract-type-detector-5dade255/llms.txt): $0.003/call via x402. Identifies the type/classification of a smart contract at a given EVM address and block height
- [LogicNodes Money Calculator](https://www.zero.xyz/c/logicnodes-money-calculator-5b7a296b/llms.txt): $0.001/call via x402. Performs precise monetary arithmetic (rounding, addition, subtraction, multiplication, splitting, ratio-based splitting) on currency amounts using exact decimal math
- [LogicNodes Transaction Status](https://www.zero.xyz/c/logicnodes-transaction-status-c304e0d6/llms.txt): $0.001/call via x402. Looks up the confirmation status of a blockchain transaction by hash on EVM chains or Aptos
- [LogicNodes Swap Price Impact Calculator](https://www.zero.xyz/c/logicnodes-swap-price-impact-calculator-87021bbc/llms.txt): $0.001/call via x402. Calculates the price impact percentage of a token swap given input amount and liquidity pool reserves, accounting for swap fees.
- [LogicNodes Gas Estimate](https://www.zero.xyz/c/logicnodes-gas-estimate-c4f85e3f/llms.txt): $0.001/call via x402. Returns current gas price estimates for a specified EVM or Aptos chain at one or more confidence levels
- [LogicNodes Slippage Bounds Calculator](https://www.zero.xyz/c/logicnodes-slippage-bounds-calculator-2948ea5e/llms.txt): $0.001/call via x402. Computes the minimum output or maximum input token amount for a DeFi swap given a trade amount and slippage tolerance in basis points
- [LogicNodes Aptos Balance Lookup](https://www.zero.xyz/c/logicnodes-aptos-balance-lookup-8bd9cbd7/llms.txt): $0.002/call via x402. Fetches token balances for one or more assets on an Aptos wallet address at a specific ledger version
- [LogicNodes Aptos Fee Estimate](https://www.zero.xyz/c/logicnodes-aptos-fee-estimate-8f659348/llms.txt): $0.005/call via x402. Returns estimated transaction fees for the Aptos blockchain across specified transaction types on mainnet or testnet
- [LogicNodes Aptos Asset Resolve](https://www.zero.xyz/c/logicnodes-aptos-asset-resolve-c9309f14/llms.txt): $0.001/call via x402. Resolves an Aptos blockchain asset by name or identifier query, returning canonical asset details on mainnet or testnet.
- [LogicNodes Curve DeFi Data](https://www.zero.xyz/c/logicnodes-curve-defi-data-fdce8dfe/llms.txt): $0.002/call via x402. Fetches on-chain Curve Finance protocol data (pools, rates, balances) for EVM chains via a pay-per-call API
- [LogicNodes Gas Price Forecast](https://www.zero.xyz/c/logicnodes-gas-price-forecast-894826d7/llms.txt): $0.01/call via x402. Forecasts upcoming gas prices on EVM-compatible blockchain networks to help agents optimize transaction timing and cost.
- [LogicNodes Snapshot – Blockchain Confidence Level Snapshot](https://www.zero.xyz/c/logicnodes-snapshot-blockchain-confidence-level-snapshot-a6ab1475/llms.txt): $0.005/call via x402. Returns a snapshot of blockchain data at specified confidence levels (1–99) across EVM and Aptos chains, enabling agents to retrieve on-chain state at varying finality thresholds.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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