Official MCP RegistryListed
Hearth Onchain Data
x402 pay-per-call onchain data + AI: token safety, portfolio, swap quotes, ABI, tx explain. No API k
First seen 27 Oct 2026. Evidence as of 27 Oct 2026.
11
Tools
From an anonymous probe
1
Source listings
Each with its own history
2
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| base_erc20_balance | ERC20 balance of any wallet on Base, Ethereum, Arbitrum or Optimism (USDC by default) via balanceOf, with decimals applied. Deterministic, no LLM. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| base_token_info | Name, symbol, decimals, total supply and bytecode presence for a token contract on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. Price: $0.004 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| base_tx_status | Status of a transaction on Base, Ethereum, Arbitrum or Optimism: pending/success/failed, block, confirmations, from/to, gas used, log count. Deterministic, no LLM. Price: $0.004 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| base_wallet | Native ETH balance, nonce (tx count) and whether the address is a contract, on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| evm_block | Block number, timestamp, hash, tx count, gas used/limit and base fee for the latest (or given) block on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. Price: $0.001 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| evm_gas | Current gas price, base fee, suggested priority fee and EIP-1559 maxFee for Base, Ethereum, Arbitrum or Optimism, plus a 21000-gas transfer cost in native units. Deterministic, no LLM. Price: $0.001 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| name_resolve | Resolve an ENS name (vitalik.eth) or Basename (jesse.base.eth) to an address, or an address to its verified primary ENS name. On-chain, deterministic, no LLM. Price: $0.0045 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| nft_metadata | tokenURI and resolved JSON metadata (name, description, image, attributes) for an ERC-721 or ERC-1155 token on Base, Ethereum, Arbitrum or Optimism. IPFS/Arweave resolved. Deterministic, no LLM. Price: $0.007 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| nft_owner | Current owner of an ERC-721 token (ownerOf) on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| solana_balance | Native SOL balance (lamports and SOL) for any Solana address. Deterministic, no LLM. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
| token_price | Current USD price for a token contract on Base, Ethereum, Arbitrum or Optimism (or the chain's native ETH if no address), with symbol, decimals and confidence. Aggregated from public DeFi price feeds. Deterministic, no LLM. Price: $0.0035 USDC on Base via x402 (pass the payment in _meta["x402/payment"]). | Read-only |
Change history
- Description changed (registry)
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | io.sslip.138-197-15-135/hearth-onchain | 27 Oct 2026 | 27 Oct 2026 | 2 |