Onchain & crypto

Ethereum mainnet contract ABI (ERC-20 / ERC-721 and others) from a contract address. Ethereum mainnet contract ABI. Takes query parameter address (contract, 0x + 40 hex). Returns the contract's ABI as JSON when one is available for that address.

Gnosis Chain network data in one call.

Base bundle: several reads in one paid call. Returns base_eth_getbalance and network_info_summary results in one paid call, keyed by part name. Returns: each named part service's own result, in one paid call, keyed by the part's name -- exactly what each part returns when bought alone; the call succeeds only when every part answers. It takes the union of the parts' query parameters.

Base on-chain read: a transaction by its hash. Base eth_getTransactionByHash. Takes hash (transaction hash, 0x + 64 hex) and returns that Base transaction as the node returns it: from, to, value, gas, gas price, input, nonce, block number and transaction index, or null if the node does not know the hash.

+3 more from Base

Ethereum mainnet on-chain read: a transaction receipt (status, gas used, logs) by hash. Ethereum mainnet transaction receipt via eth_getTransactionReceipt. Takes query parameter hash (transaction hash, 0x + 64 hex). Returns the node's receipt: status, block, gas used, logs.

+11 more from Ethereum

Ethereum mainnet ERC-20 allowance a holder granted a spender. Ethereum mainnet ERC-20 allowance. Takes query parameters token (ERC-20 contract, 0x + 40 hex), owner (0x + 40 hex) and spender (0x + 40 hex). Returns the raw allowance read from the contract.

Check this CA: Base ERC-20 verdict of a token contract address. Not financial advice. Returns: an AI-written token verdict on one token contract: grade (BASED/MID/COOKED/RADIOACTIVE, a stated rule over the contract's own state), a one-liner and a roast, and the facts read: code size, name, symbol, decimals, supply, owner(), proxy slots; plus the deepest Uniswap V3 pool's USD price and depth. No holders, no safety or legitimacy call.

Base contract ABI (ERC-20 / ERC-721 and others) from a contract address. Returns the ABI of a contract on Base from its address.

Base NFT (ERC-721) owner of a token id. NFT owner read on Base: takes token (ERC-721 contract, 0x + 40 hex) and id (decimal token id) and returns the address that ownerOf(id) reports on the contract.

Base ERC-20 token balance of a holder address. ERC-20 balance read on Base: takes token (ERC-20 contract, 0x + 40 hex) and address (holder, 0x + 40 hex) and returns that holder's balanceOf as read from the token contract.

Current Base gas price

EVM Token Balance Budget: checks caller-supplied raw token balance against transfer amount using only bounded caller-supplied values. Call when you need a bounded evm token balance budget result before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Token Balance Budget as versioned deterministic JSON. Price: $0.001 USDC…

Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity.

Launch and trade BSC tokens on Market Mayhem. Your own wallet signs; dry run by default; spend caps.

Buy gift cards and top-ups from the industry leader. 6000+ brands, 195 countries. 4.7★, 98% CSAT

AI-powered tools to analyze wallet behaviour prediction, fraud detection and rug pull prediction.

Non-custodial DeFi for AI agents: swaps, concentrated liquidity (V3/V4) zaps + ranges, 5 EVM chains

Robinhood Chain stock token data — price, split-adjusted supply, DeFi, corporate actions, movers.

Agent-only NFT marketplace on Base. Register, mint, list, buy, and trade via MCP tools.

Escrow protection for agent payments on Base — USDC held in smart contract until job completion.

What the chain records about an address before you pay it, and whether a payment fits it.

Free FAHCE contract discovery. Paid evidence determinations use wallet-only x402 REST endpoints.

API request: /api/v1/explorer/queries/run-async

+1 more from Allium

Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.

Flip one or more fair coins and get heads or tails, with the tally. Cryptographically random, not Math.random. For tie-breaks and A/B splits an agent has to decide on its own.

Pre-trade risk check for any ERC20 on Base, Ethereum, Polygon, Arbitrum or Optimism, straight from the deployed bytecode and live state. Detects mint, pause, blacklist, upgradeable proxy and mutable buy/sell tax powers, and reports whether ownership is renounced. Unlike LLM-written verdicts this returns the EVIDENCE - the exact selector found and its byte offset - so an agent can apply its own policy. Deterministic: same contract, same answer.

GenesisBlock: Breaking crypto news and real-time price tickers.

ERC20 token balance for any wallet - USDC, USDT, DAI or any token - via balanceOf. Returns the raw amount and the decimals so you can format it. Via eth_call (balanceOf).

Next transaction nonce for any address, and whether the address is a contract. What an agent needs before signing a transaction. Via eth_getTransactionCount.

Reads a raw storage slot of any contract, decoded as hex, integer and address. How you inspect proxy implementation slots, owners and paused flags that have no public getter. Via eth_getStorageAt.