Hearth Onchain Data

{
  "protocolVersion": "0.3.0",
  "name": "Hearth Onchain Data",
  "description": "Deterministic onchain data and web-to-markdown for agents. Pay per call with x402 (USDC on Base).",
  "url": "https://138-197-15-135.sslip.io/mcp",
  "preferredTransport": "JSONRPC",
  "version": "1.0.0",
  "provider": {
    "organization": "Hearth",
    "url": "https://138-197-15-135.sslip.io"
  },
  "documentationUrl": "https://138-197-15-135.sslip.io/llms.txt",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extensions": [
      {
        "uri": "https://github.com/google-a2a/a2a-x402/v0.1",
        "required": true,
        "description": "x402 USDC on Base"
      }
    ]
  },
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/markdown"
  ],
  "skills": [
    {
      "id": "base_erc20_balance",
      "name": "ERC20 token balance on Base",
      "description": "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 call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/base/erc20-balance"
      ]
    },
    {
      "id": "base_token_info",
      "name": "ERC20 token metadata on Base",
      "description": "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.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/base/token-info"
      ]
    },
    {
      "id": "base_tx_status",
      "name": "Transaction status on Base",
      "description": "Status of a transaction on Base, Ethereum, Arbitrum or Optimism: pending/success/failed, block, confirmations, from/to, gas used, log count. Deterministic, no LLM. $0.004 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/base/tx-status"
      ]
    },
    {
      "id": "base_wallet",
      "name": "Wallet snapshot on Base",
      "description": "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.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/base/wallet"
      ]
    },
    {
      "id": "evm_gas",
      "name": "Gas price and fee estimate",
      "description": "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. $0.001 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/evm/gas"
      ]
    },
    {
      "id": "evm_block",
      "name": "Latest block or block by number",
      "description": "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. $0.001 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/evm/block"
      ]
    },
    {
      "id": "token_price",
      "name": "Token USD price",
      "description": "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. $0.0035 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/token/price"
      ]
    },
    {
      "id": "name_resolve",
      "name": "ENS / Basename resolve",
      "description": "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. $0.0045 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/name/resolve"
      ]
    },
    {
      "id": "nft_owner",
      "name": "NFT owner (ERC-721)",
      "description": "Current owner of an ERC-721 token (ownerOf) on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. $0.0025 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/nft/owner"
      ]
    },
    {
      "id": "nft_metadata",
      "name": "NFT metadata",
      "description": "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. $0.007 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/nft/metadata"
      ]
    },
    {
      "id": "solana_balance",
      "name": "Solana SOL balance",
      "description": "Native SOL balance (lamports and SOL) for any Solana address. Deterministic, no LLM. $0.0025 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/solana/balance"
      ]
    },
    {
      "id": "token_safety",
      "name": "Token safety / honeypot / rug-risk check",
      "description": "Scam check for an ERC20 on Base, Ethereum, Arbitrum or Optimism: honeypot, buy/sell tax, mintable, owner can change balances, proxy, blacklist, open source, holder concentration, LP lock. Returns a 0-100 risk score, a verdict (low/medium/high) and the flags behind it. Use before buying or accepting a token. Deterministic, no LLM. $0.009 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/token/safety"
      ]
    },
    {
      "id": "wallet_portfolio",
      "name": "Multi-chain wallet portfolio with USD values",
      "description": "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-chain subtotals. Deterministic, no LLM. $0.008 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/wallet/portfolio"
      ]
    },
    {
      "id": "token_transfers",
      "name": "Recent ERC20 transfers for a token or wallet",
      "description": "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 blocks on Base, Arbitrum or Optimism (~500 on Ethereum). Up to 50 newest. Deterministic, no LLM. $0.0045 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/token/transfers"
      ]
    },
    {
      "id": "dex_quote",
      "name": "DEX swap quote (Uniswap v3)",
      "description": "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%). Returns amountOut, effective price, best fee tier, gas estimate. Tokens: ETH, USDC, USDT or 0x address. Read-only quote; no swap is executed. Deterministic, no LLM. $0.0045 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/dex/quote"
      ]
    },
    {
      "id": "contract_abi",
      "name": "Contract verification and ABI",
      "description": "Whether a contract on Base, Ethereum, Arbitrum or Optimism is source-verified (Sourcify), its name, compiler, full ABI, function and event signatures, and its EIP-1967 proxy implementation (also looked up). Deterministic, no LLM. $0.004 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/contract/abi"
      ]
    },
    {
      "id": "ai_tx_explain",
      "name": "Explain a transaction in plain English (AI)",
      "description": "Plain-English explanation of any transaction on Base, Ethereum, Arbitrum or Optimism: what happened, who sent what to whom (decoded token transfers with amounts and symbols), the method called, fee paid, and success/failure. Returns a summary plus the structured facts it is based on. $0.015 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/ai/tx-explain"
      ]
    },
    {
      "id": "ai_summarize",
      "name": "Summarize a web page (AI)",
      "description": "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 need the gist of a URL cheaply. $0.015 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/ai/summarize"
      ]
    },
    {
      "id": "ai_extract",
      "name": "Extract structured JSON from a web page (AI)",
      "description": "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 come back as null. Up to 20 fields. $0.02 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/ai/extract"
      ]
    },
    {
      "id": "company_enrich",
      "name": "Company / domain enrichment from its website",
      "description": "Enrich a company domain: name, title, description, social profiles (LinkedIn, X, GitHub, etc.), contact emails and phones found on the homepage, language, tech hints (frameworks, analytics), mail provider from MX records, and key pages (about, pricing, careers, contact). Deterministic, no LLM, public data only. $0.01 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/company/enrich"
      ]
    },
    {
      "id": "social_hn",
      "name": "Hacker News search (stories and comments)",
      "description": "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 mentions of a product, company or topic. Deterministic, no LLM. $0.003 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/social/hn"
      ]
    },
    {
      "id": "github_repo",
      "name": "GitHub repo stats and latest release",
      "description": "GitHub repository snapshot: stars, forks, open issues, watchers, language, license, topics, created/pushed dates, default branch, latest release (tag, date) and archived flag. Deterministic, no LLM. $0.003 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/github/repo"
      ]
    },
    {
      "id": "market_overview",
      "name": "Crypto market overview: total cap, dominance, trending",
      "description": "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, market-cap rank, price, 24h change). Deterministic, no LLM. $0.004 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/market/overview"
      ]
    },
    {
      "id": "solana_wallet_profile",
      "name": "Solana wallet intelligence: holdings, activity, counterparties, programs",
      "description": "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, failure rate, first/last seen, tx per day), programs used with labels (Jupiter, Raydium, Orca, Pump.fun, Meteora, Drift...), top counterparties from the last 15 transactions, and a simple wallet type (bot-like / trader / holder / inactive). Free public data, deterministic, no LLM. Cheaper than comparable Solana wallet-intel APIs. $0.012 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/solana/wallet-profile"
      ]
    },
    {
      "id": "base_wallet_profile",
      "name": "Base wallet intelligence: holdings, activity, counterparties, labels",
      "description": "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 count), EOA vs contract (incl. EIP-7702 smart account), recent ERC20 transfers in/out over ~5,000 blocks (~3h) with net flow, top counterparties labeled where known (Uniswap, Aerodrome, 1inch, 0x, Aave, Seaport, bridges), and a simple wallet type. Free public data, deterministic, no LLM. $0.012 per call.",
      "tags": [
        "onchain",
        "x402",
        "crypto"
      ],
      "examples": [
        "https://138-197-15-135.sslip.io/v1/base/wallet-profile"
      ]
    }
  ],
  "additionalInterfaces": [
    {
      "url": "https://138-197-15-135.sslip.io/mcp",
      "transport": "MCP"
    },
    {
      "url": "https://138-197-15-135.sslip.io/openapi.json",
      "transport": "HTTP+JSON"
    }
  ]
}