MCP server

Hearth Onchain Data

io.sslip.138-197-15-135/hearth-onchain

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

x402 pay-per-call onchain data + AI: token safety, portfolio, swap quotes, ABI, tx explain. No API k

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

25

Token cost

About 5,818 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http hearth-onchain https://138-197-15-135.sslip.io/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.hearth-onchain]
url = "https://138-197-15-135.sslip.io/mcp"

Gemini CLI

{"mcpServers":{"hearth-onchain":{"httpUrl":"https://138-197-15-135.sslip.io/mcp"}}}

Cursor

{"mcpServers":{"hearth-onchain":{"url":"https://138-197-15-135.sslip.io/mcp"}}}

VS Code

{"servers":{"hearth-onchain":{"type":"http","url":"https://138-197-15-135.sslip.io/mcp"}}}

Antigravity

agy mcp add hearth-onchain https://138-197-15-135.sslip.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"hearth-onchain","server_url":"https://138-197-15-135.sslip.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"hearth-onchain","server_url":"https://138-197-15-135.sslip.io/mcp"}

Tools

• ai_extract ~203 tokens
  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 come back as null. Up to 20 fields. Example output: {"url":"https://example.com","data":{"title"
• ai_summarize ~193 tokens
  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 need the gist of a URL cheaply. Example output: {"url":"https://example.com","title":"Example Domain","tldr":"…","
• ai_tx_explain ~268 tokens
  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 and symbols), the method called, fee paid, and success/failure. Returns a summary plus the str
• base_erc20_balance ~220 tokens
  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. Example output: {"chain":"base","wallet":"0x…","token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","raw":"1500000","decimal
• base_token_info ~206 tokens
  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. Example output: {"chain":"base","address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","name":"USD Coin","symbol":"USDC","deci
• base_tx_status ~206 tokens
  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 LLM. Example output: {"chain":"base","hash":"0x…","status":"success","blockNumber":1,"confirmations":10,"from":"0
• base_wallet ~183 tokens
  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. Example output: {"chain":"base","address":"0x…","ethWei":"0","eth":"0","nonce":0,"isContract":false,"block":1}. Price: $0.0025 USDC on
• base_wallet_profile ~329 tokens
  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 count), EOA vs contract (incl. EIP-7702 smart account), recent ERC20
• company_enrich ~262 tokens
  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 hints (frameworks, analytics), mail provider from MX records, and key pages (about, pricing, c
• contract_abi ~254 tokens
  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 EIP-1967 proxy implementation (also looked up). Deterministic, no LLM. Example output: {"chain":"base","addres
• dex_quote ~315 tokens
  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%). Returns amountOut, effective price, best fee tier, gas estimate. Tokens: ETH, USDC, USDT or 0x address. Read-
• evm_block ~216 tokens
  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 LLM. Example output: {"chain":"base","number":1,"hash":"0x…","timestamp":1700000000,"iso":"2026-01-01T00:00
• evm_gas ~194 tokens
  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. Deterministic, no LLM. Example output: {"chain":"base","block":1,"gasPriceGwei":"0.01","baseFeeGwei":"0.005","
• github_repo ~202 tokens
  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 archived flag. Deterministic, no LLM. Example output: {"repo":"coinbase/x402","stars":1000,"forks":20
• market_overview ~210 tokens
  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, market-cap rank, price, 24h change). Deterministic, no LLM. Example output: {"tota
• name_resolve ~175 tokens
  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. Example output: {"input":"vitalik.eth","name":"vitalik.eth","address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","r
• nft_metadata ~241 tokens
  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. Example output: {"chain":"base","contract":"0x…","tokenId":"1","tokenUri":"ipfs://…","metad
• nft_owner ~184 tokens
  NFT owner (ERC-721). Current owner of an ERC-721 token (ownerOf) on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM. Example output: {"chain":"base","contract":"0x…","tokenId":"1","owner":"0x…"}. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment"]).
• social_hn ~260 tokens
  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 mentions of a product, company or topic. Deterministic, no LLM. Example output: {"q":"x402","count":1,"h
• solana_balance ~136 tokens
  Solana SOL balance. Native SOL balance (lamports and SOL) for any Solana address. Deterministic, no LLM. Example output: {"chain":"solana","address":"…","lamports":1000000000,"sol":"1","slot":1}. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment"]).
• solana_wallet_profile ~346 tokens
  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, failure rate, first/last seen, tx per day), programs used with labels (
• token_price ~226 tokens
  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. Aggregated from public DeFi price feeds. Deterministic, no LLM. Example output: {"chain":"base","address":"0x833589fCD6eDb6
• token_safety ~295 tokens
  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, holder concentration, LP lock. Returns a 0-100 risk score, a verdict (low/medium/high) and the flags
• token_transfers ~293 tokens
  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 blocks on Base, Arbitrum or Optimism (~500 on Ethereum). Up to 50 newest. Deterministic, no LLM.
• wallet_portfolio ~201 tokens
  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-chain subtotals. Deterministic, no LLM. Example output: {"address":"0xd8dA…6045","totalUsd":1

Browse

• GitHub tools
• Stripe tools
• Website monitoring
• Social media
• Payments
• Company data

Related MCP servers

• Professor Sausages — On-chain
  EVM gas, Chainlink prices, token-safety, swap quotes, ENS, OFAC & NFT via x402.
• AgentExec WebMCP & Base L2 Gateway
  Monetization and execution gateway for autonomous AI agents on Base Mainnet
• MOSN Solana Safety
  Solana token rug checks and safety-checked Jupiter swaps for AI agents; paid data via x402.
• Aether: Base onchain data & token risk (x402)
  Base token risk (honeypot sim), prices, balances, Basenames, tx data. Pay-per-call in USDC via x402.
• Automaton Onchain Tools
  Paid x402 crypto safety tools (Base/ETH/BSC): tx, approvals, contract risk, token deep scan.
• Wallet Doctor x402
  Multi-chain wallet MCP. 18 tools: balance, swap, bridge, stake, claim. Pay-per-call USDC (x402 v2).
• Chainverdict
  Pay-per-call x402 checks before an agent moves money: token safety, wallet risk, identifiers.
• Solana MCP by Vybe
  Solana MCP developer toolkit: wallets, trades, markets, PnL, transfers, onchain, swaps & API tools.

Badge for your README

[![AptLynx](https://aptlynx.net/badge/io.sslip.138-197-15-135/hearth-onchain.svg)](https://aptlynx.net/servers/io.sslip.138-197-15-135/hearth-onchain)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents