MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Payments & trading

Agent Data API

Token risk, wallet profiles, OFAC screening, whale trades on 6 chains. x402, USDC per call.

Checks passed
11 / 22

3 failed · 8 not measured

Median response
310 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
113

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
222

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 310 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name agent-data-api.

  • Pass
    Lists tools

    tools/list returned 113 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 310 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 310 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    240 of 241 parameters have a description (100%). The bar is 80%.

  • Fail
    Safety hints

    113 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Not measured
    Website matches publisher

    This namespace is not a reverse domain, so the website comparison does not apply.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Fail
    Repo owner matches

    The GitHub repository owner does not match the namespace login.

  • Pass
    Recently updated

    Updated 2026-10-24T06:12:46.972335Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Agent Data API

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http agent-data-api https://onchaincheck.dev/mcp

Capabilities

Tools 113

Showing 100 of 113 tools.

address_sanctions_exposure

Has this wallet dealt with sanctioned addresses? Reads up to 4,000 of the wallet's latest transfers (native, internal, ERC-20, NFTs) on Base, Ethereum, Arbitrum, Optimism or Polygon and checks every counterparty against the OFAC SDN list's addresses: each sanctioned counterparty with entity, programs, direction, transfer count, assets and dates. Direct exposure only. Not legal advice. Costs $0.01 USDC on Base via x402.

Discovered
address_sanctions_screen

Is this address sanctioned? Screens a crypto address against the US Treasury OFAC SDN list's published digital currency addresses (ETH, USDC, USDT, XBT, SOL, TRX and others): the listed entity, programs and listing date on a match, or not found as of the list date. Adds whether it is a wallet (EOA) or contract on Base, Ethereum, Arbitrum, Optimism or Polygon, or a wallet or program-derived address on Solana. Not legal advice. Costs $0.005 USDC on Base via x402.

Discovered
ai_chat

LLM chat completion, flat $0.003 a call: send a prompt (plus optional system) or an OpenAI-style messages array and get the reply text with token usage. Models: gpt-oss-20b (default), qwen3-30b, glm-4.7-flash, llama-4-scout. Up to 16,000 characters in and 1,024 tokens out; json=true for JSON output. Costs $0.003 USDC on Base via x402.

Discovered
ai_chat_pro

LLM chat completion on larger models, flat $0.01 a call: prompt (plus optional system) or an OpenAI-style messages array in, reply text and token usage out. Models: gpt-oss-120b (default), deepseek-v4.1-flash, llama-3.3-70b, mistral-small-3.1, glm-5.3-flash. Up to 32,000 characters in and 2,048 tokens out; json=true for JSON output. Costs $0.01 USDC on Base via x402.

Discovered
ai_embeddings

Text embeddings with bge-m3 (1,024 dimensions, multilingual): one text, or up to 32 texts in one call (POST texts array), up to 32,000 characters in all. For semantic search, clustering and similarity. Costs $0.002 USDC on Base via x402.

Discovered
ai_image

Generate an image from a text prompt with FLUX.1 [schnell]: a 1024x1024 JPEG returned as base64 in JSON. Optional steps (1-8, default 4) and seed for repeatable results. Costs $0.01 USDC on Base via x402.

Discovered
ai_keywords

Keywords with relevance scores (up to 10), named entities typed as person, organization, location, product or event (up to 10), and 1-3 broad topics from a text. Up to 5,000 characters. Llama 4 Scout on Workers AI. Costs $0.003 USDC on Base via x402.

Discovered
ai_rewrite

Rewrite a text in another tone, keeping its meaning, facts and language: professional (default), casual, friendly, formal, concise, simple, persuasive, confident or empathetic. Up to 5,000 characters. Llama 4 Scout on Workers AI. Costs $0.003 USDC on Base via x402.

Discovered
ai_sentiment

Sentiment of a text (review, post, email, support ticket): positive, negative, neutral or mixed, a score from -1 to 1, confidence, up to 3 emotions and per-aspect sentiment. Up to 5,000 characters, any language. Llama 4 Scout on Workers AI. Costs $0.003 USDC on Base via x402.

Discovered
ai_summarize

Summary of a text in one sentence, 2-3 sentences or a paragraph (length short, medium or long), plus 3-5 key points and the text's language. Up to 5,000 characters. Llama 4 Scout on Workers AI. Costs $0.003 USDC on Base via x402.

Discovered
ai_text_to_speech

Text to speech: up to 1,000 characters spoken as a WAV file (22 kHz mono), returned as base64 in JSON. Languages: English, Spanish, French, Chinese, Japanese, Korean (MeloTTS). Costs $0.01 USDC on Base via x402.

Discovered
ai_transcribe

Speech to text with Whisper large-v3 turbo: pass the URL of an audio file (MP3, WAV, OGG, M4A; up to 15 MB) and get the transcript, detected language, duration, word count and timed segments. Optional language hint. Costs $0.01 USDC on Base via x402.

Discovered
ai_translate

Translate text between 100 languages (m2m100): up to 5,000 characters, target language as an ISO 639-1 code; the source language is detected when not given. Costs $0.003 USDC on Base via x402.

Discovered
arbitrum_contract_info

Identify what lives at a Arbitrum One address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and ETH balance. Costs $0.005 USDC on Base via x402.

Discovered
arbitrum_erc20_allowance

ERC-20 allowance on Arbitrum One: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now. Costs $0.005 USDC on Base via x402.

Discovered
arbitrum_gas_prices

Current Arbitrum One gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD); plus how the current price ranks against our own samples every 10 minutes over the last 7 days, and the usually cheapest UTC hour. Costs $0.005 USDC on Base via x402.

Discovered
arbitrum_large_trades

Whale and large-trade tracker for an ERC-20 on Arbitrum One: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most; plus the token's launch from our history (first-sight risk score, liquidity after 24 h/7 d/30 d, deployer record) when we recorded it. Costs $0.02 USDC on Base via x402.

Discovered
arbitrum_new_pools

New trading pools created on Arbitrum One in the last N minutes on Uniswap v4, Uniswap v2, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidity where readable; plus, from our launch history, each pool's first-sight risk score and how many new pools on its venue lost their liquidity within 24 h. Unvetted: many new pools are spam. Costs $0.01 USDC on Base via x402.

Discovered
arbitrum_nft_metadata

Metadata for an ERC-721 or ERC-1155 token on Arbitrum One: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL. Costs $0.008 USDC on Base via x402.

Discovered
arbitrum_token_snapshot

Rug check and due-diligence snapshot of an ERC-20 token on Arbitrum One: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.

Discovered
arbitrum_transaction_summary

Human-readable summary of a Arbitrum One transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.

Discovered
arbitrum_wallet_balances

Native ETH balance of a Arbitrum One wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Arbitrum One. Costs $0.005 USDC on Base via x402.

Discovered
arbitrum_wallet_profile

Who is this Arbitrum One address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (ETH, WETH, USDC, USDT), from Alchemy's transfer index; plus, from our launch history, tokens it deployed and how many lost their liquidity, and deployers it funded. Costs $0.01 USDC on Base via x402.

Discovered
base_contract_info

Identify what lives at a Base address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and ETH balance. Costs $0.005 USDC on Base via x402.

Discovered
base_erc20_allowance

ERC-20 allowance on Base: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now. Costs $0.005 USDC on Base via x402.

Discovered
base_gas_prices

Current Base gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD); plus how the current price ranks against our own samples every 10 minutes over the last 7 days, and the usually cheapest UTC hour. Costs $0.005 USDC on Base via x402.

Discovered
base_large_trades

Whale and large-trade tracker for an ERC-20 on Base: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3 or Aerodrome), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most; plus the token's launch from our history (first-sight risk score, liquidity after 24 h/7 d/30 d, deployer record) when we recorded it. Costs $0.02 USDC on Base via x402.

Discovered
base_new_pools

New trading pools created on Base in the last N minutes on Uniswap v4, Uniswap v2, Uniswap v3 or Aerodrome: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidity where readable; plus, from our launch history, each pool's first-sight risk score and how many new pools on its venue lost their liquidity within 24 h. Unvetted: many new pools are spam. Costs $0.01 USDC on Base via x402.

Discovered
base_nft_metadata

Metadata for an ERC-721 or ERC-1155 token on Base: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL. Costs $0.008 USDC on Base via x402.

Discovered
base_resolve_basename

Resolve a Basename (name.base.eth) to its Base address and profile records (avatar, description, url, Twitter, GitHub). Accepts "jesse", "jesse.base" or "jesse.base.eth". Costs $0.005 USDC on Base via x402.

Discovered
base_token_snapshot

Rug check and due-diligence snapshot of an ERC-20 token on Base: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3 or Aerodrome. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.

Discovered
base_transaction_summary

Human-readable summary of a Base transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.

Discovered
base_wallet_balances

Native ETH balance of a Base wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Base. Costs $0.005 USDC on Base via x402.

Discovered
base_wallet_profile

Who is this Base address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (ETH, WETH, USDC, USDT), from Alchemy's transfer index; plus, from our launch history, tokens it deployed and how many lost their liquidity, and deployers it funded. Costs $0.01 USDC on Base via x402.

Discovered
canada_business_days

Number of business days between two dates in a Canadian province or territory, excluding weekends and that province's statutory holidays (with weekend holidays moved to their observed weekday). Counts from the start date up to but not including the end date, and lists the holidays skipped. Costs $0.005 USDC on Base via x402.

Discovered
canada_sales_tax

Canadian sales tax breakdown for an amount in a province or territory: GST, HST, PST, RST or QST with each rate and amount rounded to the cent, plus the total. Rates are looked up for the given date (default today), so historical changes such as Nova Scotia's 2025 HST cut are handled. Costs $0.005 USDC on Base via x402.

Discovered
canada_statutory_holidays

Statutory (general) holidays for a Canadian province or territory in a given year, using the province's local names, with the actual date and the weekday it is observed when it falls on a weekend. Costs $0.01 USDC on Base via x402.

Discovered
chat_completions

OpenAI-compatible chat completions, flat $0.002 a call: the same request and response as OpenAI's /v1/chat/completions (messages, model, max_tokens, temperature, response_format json_object, stream), so an OpenAI SDK works by changing the base URL. Models: llama-4-scout (default), gpt-oss-20b, qwen3-30b, glm-4.7-flash. Up to 10,000 characters in, 1,024 tokens out. Costs $0.002 USDC on Base via x402.

Discovered
company_enrich

Company enrichment from a domain: name, description, logo, founded, headquarters, country, industry, employee count, ticker, founders, CEO and parent (Wikidata), social profiles and contact links (homepage), tech stack, mail provider, domain age, careers page and open job count from ~20,000 indexed job boards. Repeat lookups list what changed since the previous check. Costs $0.01 USDC on Base via x402.

Discovered
company_hiring_trend

Is a company growing or cutting? Hiring trend from our recorded history of every posting added and removed on its public job board (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee, Workday), crawled twice a day: open roles now, added and removed per week, net change and growth rate over 7 and 30 days, teams and locations growing or shrinking, new roles, remote share, and a one-line summary. Costs $0.01 USDC on Base via x402.

Discovered
company_jobs

Remote or on-site jobs open at a company right now, from its own applicant tracking system's public job board: Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee, BambooHR, Personio, Teamtailor, or Workday from a careers URL. Give a company name, website or job-board URL, with optional title, location and remote filters. Returns the newest 50 matching jobs with title, department, location, remote flag, salary when published, posting date and apply link, plus total counts. Costs $0.005 USDC on Base via x402.

Discovered
company_profile

Is a company hiring? A company's hiring profile from its public job board (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee, Workday), crawled twice a day: careers page, open roles, top departments, locations and countries, remote share, pay median, newest jobs, and jobs opened and closed in the last 7 and 30 days from our crawl history. Costs $0.01 USDC on Base via x402.

Discovered
crypto_news

Latest crypto news headlines from eight outlets (Cointelegraph, Decrypt, The Block, Bitcoin Magazine, CryptoSlate, The Defiant, CryptoPotato, NewsBTC) in one feed, newest first: title, link, source, time, summary and categories. Optional q filters by keyword or coin (btc matches bitcoin), hours sets the window (default 72), source picks one outlet. Costs $0.001 USDC on Base via x402.

Discovered
crypto_price

Current USD price and 24-hour change for up to 20 crypto tokens in one call: symbols (btc, eth, sol), CoinGecko ids (coingecko:bitcoin) or contract addresses on any chain (base:0x..., solana:<mint>), from DefiLlama's aggregated prices. Costs $0.002 USDC on Base via x402.

Discovered
deployer_links

Which other launch wallets share this deployer's funder? Serial ruggers launch each token from a fresh wallet funded from one source. Pass a deployer wallet or a token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: returns the wallet that first funded it (exchanges, bridges and busy services flagged, never linked), the other deployers it funded, their tokens and how many lost their liquidity within a week, from our own launch records since 2026-10-23. Not advice. Costs $0.01 USDC on Base via x402.

Discovered
deployer_record

Who launched this token, and what happened to their other tokens? A creator's launch record on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana from our own history of new pools: every token the wallet launched since 2026-10-23 with its risk score at launch and whether its liquidity was gone 24 hours and 7 days later, plus a verdict (repeat-rugger, prior-rug, serial-launcher, clean-so-far, too-new). Pass the deployer wallet or a token address. Not advice. Costs $0.005 USDC on Base via x402.

Discovered
document_to_markdown

Convert a document at a URL to Markdown for an LLM: PDF, Word (DOCX), Excel (XLSX, XLS), OpenDocument (ODT, ODS), CSV and XML, up to 20 MB. Returns the Markdown with character, word and token counts. Costs $0.005 USDC on Base via x402.

Discovered
domain_lookup

Everything about a domain in one call: DNS records (A, AAAA, NS, MX, TXT, CAA, CNAME), email security graded A-F (mail provider, SPF, DMARC policy, DKIM at common selectors, BIMI, with findings) and RDAP registration (registrar, created, expires, age in days, status, nameservers, DNSSEC). Repeat lookups list what changed since the previous check. Costs $0.003 USDC on Base via x402.

Discovered
economy_indicators

A country's headline economics from the World Bank: GDP, GDP growth, GDP per capita (nominal and PPP), inflation, unemployment, population and growth, government debt, current account, exports, imports, FDI, real interest rate and life expectancy, each with its latest year, the previous year and the change. Plus region, income level and capital. Costs $0.005 USDC on Base via x402.

Discovered
email_auth_check

Check a domain's email authentication: SPF record and its all-mechanism and lookup count, DMARC policy, DKIM at common selectors, MX hosts and mail provider, and BIMI, with plain findings and an A-F grade. Answers whether mail from the domain can be spoofed and whether it is set up to reach inboxes. Costs $0.002 USDC on Base via x402.

Discovered
email_find

Finds a person's likely work email from their name and company domain. Checks the domain's mail servers, reads the company's homepage and contact pages for addresses it publishes to learn its pattern (jane.doe, jdoe, jane), and ranks candidates with a confidence each. An exact address found on the site comes first. No SMTP probe. Costs $0.005 USDC on Base via x402.

Discovered
email_validate

Is this email address worth sending to? Checks syntax, the domain's mail servers (MX, implicit MX, null MX) and mail provider, disposable domains (10,000+ known), role accounts (info@, sales@), free providers, and misspelled domains (gmial.com suggests gmail.com). Returns valid, risky or invalid with a 0-100 score and reasons. No SMTP probe. Costs $0.002 USDC on Base via x402.

Discovered
eth_contract_info

Identify what lives at a Ethereum address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and ETH balance. Costs $0.005 USDC on Base via x402.

Discovered
eth_erc20_allowance

ERC-20 allowance on Ethereum: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now. Costs $0.005 USDC on Base via x402.

Discovered
eth_gas_prices

Current Ethereum gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD); plus how the current price ranks against our own samples every 10 minutes over the last 7 days, and the usually cheapest UTC hour. Costs $0.005 USDC on Base via x402.

Discovered
eth_large_trades

Whale and large-trade tracker for an ERC-20 on Ethereum: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most; plus the token's launch from our history (first-sight risk score, liquidity after 24 h/7 d/30 d, deployer record) when we recorded it. Costs $0.02 USDC on Base via x402.

Discovered
eth_new_pools

New trading pools created on Ethereum in the last N minutes on Uniswap v4, Uniswap v2, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidity where readable; plus, from our launch history, each pool's first-sight risk score and how many new pools on its venue lost their liquidity within 24 h. Unvetted: many new pools are spam. Costs $0.01 USDC on Base via x402.

Discovered
eth_nft_metadata

Metadata for an ERC-721 or ERC-1155 token on Ethereum: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL. Costs $0.008 USDC on Base via x402.

Discovered
eth_resolve_ens

ENS on Ethereum: resolve a name (vitalik.eth) to its address and profile records (avatar, description, url, Twitter, GitHub), or pass an address instead to get its primary ENS name. Uses ENS's universal resolver. Costs $0.005 USDC on Base via x402.

Discovered
eth_token_snapshot

Rug check and due-diligence snapshot of an ERC-20 token on Ethereum: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.

Discovered
eth_transaction_summary

Human-readable summary of a Ethereum transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.

Discovered
eth_wallet_balances

Native ETH balance of a Ethereum wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Ethereum. Costs $0.005 USDC on Base via x402.

Discovered
eth_wallet_profile

Who is this Ethereum address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (ETH, WETH, USDC, USDT), from Alchemy's transfer index; plus, from our launch history, tokens it deployed and how many lost their liquidity, and deployers it funded. Costs $0.01 USDC on Base via x402.

Discovered
fx_ecb_convert

Convert an amount between two currencies at the European Central Bank daily reference rate, latest or for a past date, returning the rate used, the result, and the rate date. Costs $0.005 USDC on Base via x402.

Discovered
fx_ecb_rates

European Central Bank daily reference exchange rates for about 30 major currencies, from any base currency, latest or for a past date. Rates update once per working day; the response states which day. Costs $0.005 USDC on Base via x402.

Discovered
jobs_new

Job alerts: new job openings since a time, for monitoring (e.g. new remote engineering roles): jobs first seen by a twice-daily crawl of about 20,000 company job boards (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee, Workday). Same filters as /jobs/search (title, company, location, remote, minimum salary). Returns up to 50 newest, each with when it was first seen, and nextSince for the next poll. Costs $0.01 USDC on Base via x402.

Discovered
jobs_salary

Salary for a job title: how much a role pays, from open postings that publish pay, on about 20,000 company job boards crawled twice a day. Optional location, remote and currency. Returns yearly p10/p25/median/p75/p90, the typical posted range, remote vs on-site medians, the five top-paying companies and the posting count. Costs $0.01 USDC on Base via x402.

Discovered
jobs_search

Job search: find open jobs (remote, by title, location or pay) across about 20,000 company job boards (Greenhouse, Lever, Ashby, Workable, SmartRecruiters, Recruitee, Workday), crawled twice a day: about 470,000 jobs. Filter by title words, company, location, remote, minimum yearly salary and posting age. Returns up to 50 newest matches with company, location, remote flag, salary when published, posting date and link. Costs $0.005 USDC on Base via x402.

Discovered
optimism_contract_info

Identify what lives at a OP Mainnet address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and ETH balance. Costs $0.005 USDC on Base via x402.

Discovered
optimism_erc20_allowance

ERC-20 allowance on OP Mainnet: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now. Costs $0.005 USDC on Base via x402.

Discovered
optimism_gas_prices

Current OP Mainnet gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in ETH and USD of a native transfer and an ERC-20 transfer (Chainlink ETH/USD); plus how the current price ranks against our own samples every 10 minutes over the last 7 days, and the usually cheapest UTC hour. Costs $0.005 USDC on Base via x402.

Discovered
optimism_large_trades

Whale and large-trade tracker for an ERC-20 on OP Mainnet: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3 or Velodrome), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most; plus the token's launch from our history (first-sight risk score, liquidity after 24 h/7 d/30 d, deployer record) when we recorded it. Costs $0.02 USDC on Base via x402.

Discovered
optimism_new_pools

New trading pools created on OP Mainnet in the last N minutes on Uniswap v4, Uniswap v2, Uniswap v3 or Velodrome: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with ETH, WETH or USDC, and quote liquidity where readable; plus, from our launch history, each pool's first-sight risk score and how many new pools on its venue lost their liquidity within 24 h. Unvetted: many new pools are spam. Costs $0.01 USDC on Base via x402.

Discovered
optimism_nft_metadata

Metadata for an ERC-721 or ERC-1155 token on OP Mainnet: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL. Costs $0.008 USDC on Base via x402.

Discovered
optimism_token_snapshot

Rug check and due-diligence snapshot of an ERC-20 token on OP Mainnet: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3 or Velodrome. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.

Discovered
optimism_transaction_summary

Human-readable summary of a OP Mainnet transaction: status, block and time, sender and recipient, ETH value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.

Discovered
optimism_wallet_balances

Native ETH balance of a OP Mainnet wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from OP Mainnet. Costs $0.005 USDC on Base via x402.

Discovered
optimism_wallet_profile

Who is this OP Mainnet address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (ETH, WETH, USDC, USDT), from Alchemy's transfer index; plus, from our launch history, tokens it deployed and how many lost their liquidity, and deployers it funded. Costs $0.01 USDC on Base via x402.

Discovered
polygon_contract_info

Identify what lives at a Polygon PoS address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and POL balance. Costs $0.005 USDC on Base via x402.

Discovered
polygon_erc20_allowance

ERC-20 allowance on Polygon PoS: how much a spender may transfer from an owner, whether the approval is effectively unlimited, the owner's balance, and the amount the spender could move right now. Costs $0.005 USDC on Base via x402.

Discovered
polygon_gas_prices

Current Polygon PoS gas conditions: block number, base fee, gas price and priority fee in gwei, and the estimated cost in POL and USD of a native transfer and an ERC-20 transfer (Chainlink POL/USD); plus how the current price ranks against our own samples every 10 minutes over the last 7 days, and the usually cheapest UTC hour. Costs $0.005 USDC on Base via x402.

Discovered
polygon_large_trades

Whale and large-trade tracker for an ERC-20 on Polygon PoS: every buy and sell in the last N minutes on the token's deepest WPOL/USDC pools (Uniswap v3), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most; plus the token's launch from our history (first-sight risk score, liquidity after 24 h/7 d/30 d, deployer record) when we recorded it. Costs $0.02 USDC on Base via x402.

Discovered
polygon_new_pools

New trading pools created on Polygon PoS in the last N minutes on Uniswap v4, Uniswap v2, Uniswap v3: both tokens with symbol, name and decimals, fee tier, v4 hooks, whether it pairs with POL, WPOL or USDC, and quote liquidity where readable; plus, from our launch history, each pool's first-sight risk score and how many new pools on its venue lost their liquidity within 24 h. Unvetted: many new pools are spam. Costs $0.01 USDC on Base via x402.

Discovered
polygon_nft_metadata

Metadata for an ERC-721 or ERC-1155 token on Polygon PoS: collection name, current owner (ERC-721), token URI, and the metadata JSON fetched and decoded from IPFS, Arweave, HTTPS or an inline data URI, with a browser-loadable image URL. Costs $0.008 USDC on Base via x402.

Discovered
polygon_token_snapshot

Rug check and due-diligence snapshot of an ERC-20 token on Polygon PoS: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WPOL or USDC pool on Uniswap v3. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.

Discovered
polygon_transaction_summary

Human-readable summary of a Polygon PoS transaction: status, block and time, sender and recipient, POL value, gas used and fee, method selector, and decoded ERC-20 transfers with token symbols and amounts. Costs $0.005 USDC on Base via x402.

Discovered
polygon_wallet_balances

Native POL balance of a Polygon PoS wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Polygon PoS. Costs $0.005 USDC on Base via x402.

Discovered
polygon_wallet_profile

Who is this Polygon PoS address? Wallet age (first transfer), first funder, contract or EOA, POL balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large transfers in USD (POL, WPOL, USDC, USDT), from Alchemy's transfer index; plus, from our launch history, tokens it deployed and how many lost their liquidity, and deployers it funded. Costs $0.01 USDC on Base via x402.

Discovered
prediction_markets

Prediction market odds for any topic from Polymarket: matching events with each market's outcomes and implied probabilities, 24-hour change, volume, liquidity and end date. For questions like 'odds of a Fed rate cut' or 'will bitcoin reach 150k'. Costs $0.005 USDC on Base via x402.

Discovered
prepayment_safety_check

Is it safe to pay this address? One check before sending or accepting crypto: OFAC SDN sanctions screen, wallet age, EOA or contract, first funder and recent large transfers on Base, Ethereum, Arbitrum, Optimism or Polygon (wallet kind and activity on Solana), plus the token's 0-100 risk score when a token is given. Returns ok, caution or block with plain reasons and each check in full. Rules-based, not legal advice. Costs $0.02 USDC on Base via x402.

Discovered
prepayment_safety_check_lite

Is it safe to pay this address? The address-only version of /check: OFAC SDN sanctions screen, wallet age, EOA or contract, first funder and recent large transfers on Base, Ethereum, Arbitrum, Optimism or Polygon (wallet kind and activity on Solana), with the funder and counterparties screened too. Returns ok, caution or block with plain reasons. No token score (use /check for that). Rules-based, not legal advice. Costs $0.01 USDC on Base via x402.

Discovered
sanctions_name_search

Screens a person, company, vessel or aircraft name against the OFAC SDN and non-SDN lists, the UN Security Council consolidated list and the UK Sanctions List (about 27,000 entries with aliases). Fuzzy matching ignores word order, accents, punctuation and legal forms. Each match: 0-100 score, list, listed name, type, programs, aliases, birth date, nationality. Not legal advice. Costs $0.005 USDC on Base via x402.

Discovered
sec_company

US public company data from SEC EDGAR by ticker, CIK or name: industry, exchange, address, fiscal year end, recent filings (10-K, 10-Q, 8-K) with links, and latest annual and quarterly revenue, net income, operating income, EPS, assets, liabilities, equity, cash and operating cash flow. Costs $0.005 USDC on Base via x402.

Discovered
solana_token_snapshot

Rug check and due-diligence snapshot of a Solana SPL or Token-2022 token: a 0-100 risk score with reasons, name, symbol, supply, mint and freeze authority, Token-2022 controls (permanent delegate, transfer fees, transfer hook, pausable), metadata mutability, top-holder concentration split into wallets and program accounts, and USD price, liquidity, volume and pools from Jupiter and DexScreener. Facts only, no buy or sell opinion. Costs $0.01 USDC on Base via x402.

Discovered
solana_wallet

Portfolio and activity of a Solana wallet: SOL and every SPL and Token-2022 balance with USD values from Jupiter, sorted by value, with dust, unpriced and empty token accounts summarized, plus the newest transaction time, transactions in the last 24 hours, and the oldest transaction in the newest 1,000, with a flag when history goes further back; plus, from our launch history, tokens it deployed and how many lost their liquidity, and deployers it funded. Costs $0.005 USDC on Base via x402.

Discovered
token_risk_check

Is this token safe? Rug check for any token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a 0-100 risk score with plain reasons (mint, freeze, blacklist, fee, pause or trading-switch powers, upgradeable code, holder concentration, thin liquidity, a deployer whose earlier tokens lost their liquidity), the facts behind it, and USD price and liquidity. A fingerprint sent back as since returns what changed. Rules-based, not advice. Costs $0.01 USDC on Base via x402.

Discovered
token_verdict

Rug Radar verdict for a token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a grade (CLEAN, MID, SKETCHY, RUGGY), a one-liner, a short take and a shareable card, built from real onchain facts: the 0-100 risk score with its reasons and the deployer's record (did their earlier tokens lose liquidity?). Same call shape as quest verdicts: POST tokenAddress with an optional requestKey, echoed back. Rules-based, not financial advice. Costs $0.01 USDC on Base via x402.

Discovered
token_watch_subscribe

Webhook alerts for up to 5 tokens on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana for 7 days: we re-check each about hourly and POST a signed JSON alert to your https webhook when its risk score or reasons, owner or authorities, or liquidity (10%+) change, optionally price. Returns an id and an HMAC secret; GET /watch/<id> is free. Renew with {id}. Rules-based, not advice. Costs $0.05 USDC on Base via x402.

Discovered
token_watchlist

Re-check up to 5 tokens you hold or watch in one call, on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: each token's 0-100 risk score, level, reason codes, price, liquidity and a fingerprint. Send the fingerprints back as since to get what changed (new risks, owner or authority changes, liquidity or price moves of 10%+) and a short list of alerts. One price for the whole list, made for polling positions on a schedule. Rules-based, not advice. Costs $0.01 USDC on Base via x402.

Discovered
vat_validate

Validates an EU VAT number against the European Commission's VIES service: registered or not, with the registered company name and address where the member state shares them. Checks the number's format per country first. Covers the 27 EU states and Northern Ireland (XI); UK (GB) numbers get a format check only. Costs $0.003 USDC on Base via x402.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected310 ms113