Alpaca Trading API integration for Model Context Protocol (MCP)
Nothing to run from here
Hearth: x402 Pay-Safety & Discovery is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
93/100
tool-list score
25
tools declared
remote
at its publisher
—
calls last 7d
What it does
Check x402 APIs before paying (pay/caution/avoid); find x402 APIs by real paid usage.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http hearth-onchain-data-mcp https://138-197-15-135.sslip.io/mcp
# 2 — ask your agent for something these tools do
# base_erc20_balance, base_token_info, base_tx_status and 22 more
Hearth: x402 Pay-Safety & Discovery costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
11All 1 server
138-197-15-1351 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http hearth-onchain-data-mcp https://138-197-15-135.sslip.io/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
25 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
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","decimals":6,"balance":"1.5"}. Price: $0.0025 USDC on Base via x402 (pass the payment in _meta["x402/payment
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| wallet | string | yes | Wallet address |
| token | string | no | Token contract (default USDC) |
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","decimals":6,"totalSupply":"…","isContract":true}. Price: $0.004 USDC on Base via x402 (pass the payment
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| address | string | yes | Token contract |
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":"0x…","to":"0x…","gasUsed":"21000","logs":0}. Price: $0.004 USDC on Base via x402 (pass the payment in
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| hash | string | yes | Transaction hash |
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 via x402 (pass the payment in _meta["x402/payment"]).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| address | string | yes | Address |
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","priorityFeeGwei":"0.001","maxFeeGwei":"0.011","transferCostEth":"0.00000021"}. Price: $0.001 USDC on
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
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":"2026-01-01T00:00:00.000Z","txCount":100,"gasUsed":"1","gasLimit":"1","baseFeeGwei":"0.01"}. Price: $0.001 USDC on Ba
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| number | string | no | Block number (default latest) |
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":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","symbol":"USDC","priceUsd":0.9997,"decimals":6,"confidence":0.99,"timest
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| address | string | no | Token contract (omit for ETH) |
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","registry":"ethereum"}. Price: $0.0045 USDC on Base via x402 (pass the payment in _meta["x402/payment"
| Parameter | Type | Required | Notes |
|---|---|---|---|
| input | string | yes | Name (.eth / .base.eth) or 0x address |
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"]).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| contract | string | yes | NFT contract |
| tokenId | string | yes | Token id (decimal) |
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://…","metadata":{"name":"…","image":"ipfs://…","imageUrl":"https://ipfs.io/ipfs/…","attributes":[]}}. Price: $0
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| contract | string | yes | NFT contract |
| tokenId | string | yes | Token id (decimal) |
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"]).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | Solana address (base58) |
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 behind it. Use before buying or accepting a token. Deterministic, no LLM. Example output: {"chain":"
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| address | string | yes | Token contract address |
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":15234.12,"chains":{"base":{"usd":120.5,"assets":[{"symbol":"ETH","amount":"0.05","usd":116.3}]}},"eth
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | EVM wallet address |
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. Example output: {"chain":"base","fromBlock":1,"toBlock":2,"count":1,"transfers":[{"token":"0x…","sym
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| token | string | no | Token contract (optional if wallet given) |
| wallet | string | no | Wallet to filter (from or to) |
| blocks | string | no | Lookback blocks (max 2000) |
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-only quote; no swap is executed. Deterministic, no LLM. Example output: {"chain":"base","tokenIn":"W
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| tokenIn | string | yes | ETH, USDC, USDT or 0x address |
| tokenOut | string | yes | ETH, USDC, USDT or 0x address |
| amountIn | string | yes | Human amount of tokenIn, e.g. 1.5 |
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","address":"0x…","isContract":true,"verified":true,"match":"exact_match","name":"FiatTokenProxy","compiler":
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| address | string | yes | Contract address |
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 structured facts it is based on. Example output: {"chain":"base","hash":"0x…","summary":"Wallet 0xa729…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chain | string | no | Chain: base (default), ethereum, arbitrum, optimism |
| hash | string | yes | Transaction hash |
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":"…","keyPoints":["…"],"entities":["IANA"]}. Price: $0.015 USDC on Base via x402 (pass the payment in _met
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | Public http(s) URL |
| focus | string | no | Optional focus/question |
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":"Example Domain","contact_email":null,"description":"…"}}. Price: $0.02 USDC on Base via x402 (pass
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | Public http(s) URL |
| fields | string | yes | Comma-separated field names (max 20) |
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, careers, contact). Deterministic, no LLM, public data only. Example output: {"domain":"stripe.com","n
| Parameter | Type | Required | Notes |
|---|---|---|---|
| domain | string | yes | Company domain |
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,"hits":[{"title":"...","url":"...","points":12,"comments":3,"author":"pg","createdAt":"2026-01-01T00:0
| Parameter | Type | Required | Notes |
|---|---|---|---|
| q | string | yes | Keyword |
| type | string | no | story (default) or comment |
| sort | string | no | relevance (default) or date |
| n | string | no | Results 1-30 |
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":200,"openIssues":50,"language":"TypeScript","license":"Apache-2.0","latestRelease":{"tag":"v1.0.0","pu
| Parameter | Type | Required | Notes |
|---|---|---|---|
| repo | string | yes | owner/name |
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: {"totalMarketCapUsd":3100000000000,"totalVolumeUsd":120000000000,"marketCapChange24hPct":-0.8,"dominance":
No parameter schema on file.
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 (Jupiter, Raydium, Orca, Pump.fun, Meteora, Drift...), top counterparties from the last 15 transactio
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | Solana wallet address (base58) |
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 transfers in/out over ~5,000 blocks (~3h) with net flow, top counterparties labeled where known (Uni
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | EVM address on Base |
Free
$0 forever
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Hearth: x402 Pay-Safety & Discovery or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATool-list grade · score 93 / 100
Release 1.2.0 · scanned 30 Oct 2026
Graded from the tools this server lists, not from its source code.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score93
Findings0 threat · 2 capability
Capabilitymoderate
Coveragemanifest
Verificationnot in this report
Surface digestecb94a1ae94705cf545606248baefb99d6df3e8d66d2d7cc8a06a258189b0317
Score vectorthreat 100 → client 93
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
Tool surfaceread
Implementation sourcenot available
Package metadatanot available
Live transportnot available
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| base_erc20_balance | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_token_info | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_tx_status | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_wallet | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| evm_gas | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| evm_block | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| token_price | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| name_resolve | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| nft_owner | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| nft_metadata | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| solana_balance | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| token_safety | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| wallet_portfolio | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| token_transfers | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| dex_quote | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| contract_abi | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| ai_tx_explain | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| ai_summarize | untrusted-input | untrusted-input: keyword "fetch", declares openWorldHint: true (interacts with entities outside the server) |
| ai_extract | untrusted-input | untrusted-input: keyword "fetch", declares openWorldHint: true (interacts with entities outside the server) |
| company_enrich | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| social_hn | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| github_repo | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| market_overview | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| solana_wallet_profile | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_wallet_profile | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
Integrityfirst-seen
Surface digestecb94a1ae94705cf
Scanned2026-10-30
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 1.2.0.
1.2.0
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish Hearth: x402 Pay-Safety & Discovery can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.