# Hearth Onchain Data

> Deterministic onchain data and web-to-markdown for agents. Pay per call with x402 (USDC on Base).

- **Domain**: `138-197-15-135.sslip.io`
- **Provider**: Hearth (https://138-197-15-135.sslip.io)
- **A2A protocol version**: 0.3.0
- **Kind**: paid_api
- **Live-responds (last probe)**: True
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 100%
- **Payment protocol**: a2a_x402
- **Wallet**: `0x10741397e86340a4608c771a9b823038d762ea42`

## Skills
- **ERC20 token balance on Base** — ERC20 balance of any wallet on Base, Ethereum, Arbitrum or Optimism (USDC by default) via balanceOf, with decimals applied. Deterministic, no LLM. $0.0025 per c
- **ERC20 token metadata on Base** — Name, symbol, decimals, total supply and bytecode presence for a token contract on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. $0.004 per call.
- **Transaction status on Base** — Status of a transaction on Base, Ethereum, Arbitrum or Optimism: pending/success/failed, block, confirmations, from/to, gas used, log count. Deterministic, no L
- **Wallet snapshot on Base** — Native ETH balance, nonce (tx count) and whether the address is a contract, on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. $0.0025 per call.
- **Gas price and fee estimate** — 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
- **Latest block or block by number** — 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 
- **Token USD 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. 
- **ENS / Basename 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. $
- **NFT owner (ERC-721)** — Current owner of an ERC-721 token (ownerOf) on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. $0.0025 per call.
- **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/Arweav
- **Solana SOL balance** — Native SOL balance (lamports and SOL) for any Solana address. Deterministic, no LLM. $0.0025 per call.
- **Token safety / honeypot / rug-risk check** — Scam check for an ERC20 on Base, Ethereum, Arbitrum or Optimism: honeypot, buy/sell tax, mintable, owner can change balances, proxy, blacklist, open source, hol
- **Multi-chain wallet portfolio with USD values** — One call: ETH, WETH, USDC and USDT balances for an address across Base, Ethereum, Arbitrum and Optimism, each with a USD value, plus the total USD value and per
- **Recent ERC20 transfers for a token or wallet** — Recent ERC20 Transfer events (decoded: from, to, amount with decimals, symbol, tx hash, block) for a token contract, a wallet, or both, over the last ~2,000 blo
- **DEX swap quote (Uniswap v3)** — Best Uniswap v3 single-hop quote for swapping amountIn of tokenIn to tokenOut on Base, Ethereum, Arbitrum or Optimism, checking all fee tiers (0.01/0.05/0.3/1%)
- **Contract verification and ABI** — Whether a contract on Base, Ethereum, Arbitrum or Optimism is source-verified (Sourcify), its name, compiler, full ABI, function and event signatures, and its E
- **Explain a transaction in plain English (AI)** — Plain-English explanation of any transaction on Base, Ethereum, Arbitrum or Optimism: what happened, who sent what to whom (decoded token transfers with amounts
- **Summarize a web page (AI)** — Fetch a public web page and return a concise summary: title, 3-7 key points, a one-paragraph TL;DR and the page's main entities. Good for research agents that n
- **Extract structured JSON from a web page (AI)** — Fetch a public web page and extract the fields you name into clean JSON (e.g. fields=name,price,currency,availability or company,ceo,founded). Missing values co
- **Company / domain enrichment from its website** — Enrich a company domain: name, title, description, social profiles (LinkedIn, X, GitHub, etc.), contact emails and phones found on the homepage, language, tech 
- **Hacker News search (stories and comments)** — Search Hacker News stories or comments by keyword, newest or most relevant first, with points, comment count, author, URL and HN link. Good for tracking mention
- **GitHub repo stats and latest release** — GitHub repository snapshot: stars, forks, open issues, watchers, language, license, topics, created/pushed dates, default branch, latest release (tag, date) and
- **Crypto market overview: total cap, dominance, trending** — Crypto market snapshot: total market cap and 24h volume (USD), 24h market-cap change, BTC/ETH dominance, active coins, plus the top trending coins (name, symbol
- **Solana wallet intelligence: holdings, activity, counterparties, programs** — One-call Solana wallet profile: SOL and SPL/Token-2022 holdings with USD values (top 25 by value), total USD, recent activity (last 100 signatures: count, failu
- **Base wallet intelligence: holdings, activity, counterparties, labels** — One-call Base wallet profile: ETH and major token holdings (USDC, WETH, USDT, DAI, cbBTC, cbETH, AERO, EURC) with USD values, total USD, nonce (lifetime sent tx

## URLs
- Agent card: https://138-197-15-135.sslip.io/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/138-197-15-135.sslip.io
- Documentation: https://138-197-15-135.sslip.io/llms.txt