Every change Wellknown observed on this MCP server, newest first, with what it was before and what it became. Tool-surface changes carry the definition diff. Nothing here is edited after the fact.
Added "hash-tools", "language-detect", "sec-company-facts" and 1 more (8 tools before, 12 now)
Run local cryptographic utilities: SHA-256 and SHA-512 hashes, Base64 encode/decode, or a random UUID v4. No upstream service is called.
Detect the most likely language of text entirely on this server, with ISO 639-1 language code, language name, confidence and alternatives. Supports English, Chinese, Japanese, Korean, Spanish, French, German, Russian, Portuguese and Italian; no upstream request.
Summarize a US public company's latest SEC-reported Revenue, NetIncomeLoss and Assets from official EDGAR companyfacts. Look up by ticker, CIK or company name; returns filing dates and fiscal periods. Uses SEC public-domain data with a declared User-Agent.
Convert Unix seconds, Unix milliseconds or an ISO date to UTC and Asia/Shanghai timestamps. An empty object returns the current time.
Added "domain-lookup", "fear-greed-index", "qr-code" and 2 more; removed "token-quotes", "token-risk-summary", "trending-pools" and 2 more; changed the definition of "fx-rates"
⟨53 unchanged words⟩ working day; they are not live trading quotes. Source: ECB statistics via Frankfurter; the same reference rates are published free of charge by the European Central
Domain one-stop lookup: live DNS records (A, AAAA, CNAME, MX, NS, TXT via DNS-over-HTTPS) plus RDAP registration data (registrar, creation and expiry dates, status, nameservers) assembled from public protocol endpoints on our servers. For domain due diligence, phishing-site checks, counterparty infrastructure review and integration pre-checks.
Crypto Fear & Greed Index by alternative.me: current value (0-100) and classification (Extreme Fear, Fear, Neutral, Greed, Extreme Greed) plus optional daily history. The most-cited single market-sentiment gauge for crypto trading agents: position sizing, risk checks and regime detection before trading. Data published by alternative.me for free commercial use with attribution; served from a 30-minute cache.
Verified owner set by well_known_file proof on call402.com
Changed the definition of "text-to-structure"
Only numbers and dates differ: this server embeds live figures in the definition, so the text moves without the contract changing.
⟨9 unchanged words⟩ :"exact","x402Version":2},"price_usd":0.010.005}
Unknown → Live
Certificate recorded, valid to 2027-01-16
Authorization not required
First tool surface recorded: 8 tools (server version 1.0.0)
https://call402.com/mcp (mcp_streamable_http) — from mcp_registry, with the record
Showing the latest 9 events. The API returns up to 500 and filters by kind: ?kind=tool_surface_changed
Generate a QR code image for any text, URL or payment address: returns SVG markup or a base64-encoded PNG rendered on our own servers (qrcode library, MIT). For agents that produce scannable payment requests, links, addresses or tickets but cannot render images themselves.
TLS/SSL certificate check for any public host: issuer, subject, SAN list, validity window, days until expiry, SHA-256 fingerprint and whether the certificate chain verified. Computed by a direct TLS handshake from our own servers. For uptime and security monitoring agents, vendor endpoint checks and integration pre-flight.
Extract the readable main content of any public web page as clean text: send a URL, get the page title, excerpt and body text with navigation, ads and boilerplate stripped (Mozilla Readability, computed on our own servers). For RAG ingestion, summarization, research and page monitoring. First-party extraction: no third-party reader service is resold.
Live DEX price and market snapshot for any token by contract address (Base, Ethereum, Solana, BSC and other DexScreener chains): spot price in USD, liquidity, 24h and 1h volume, buy/sell counts, FDV and market cap for the most liquid pairs. For trading agents, portfolio trackers and quote checks before a swap. Source: DexScreener public data. Not financial advice.
Pre-trade token safety check for trading agents, snipers and treasuries: is this ERC-20 a honeypot, what are the buy/sell taxes, can supply be minted, is ownership reclaimable, how deep is the liquidity? One call combines Honeypot.is simulation, GoPlus security audit, DexScreener liquidity, volume and pair age, and on-chain contract checks into a 0-100 risk_score, risk_level and flags for any token on Base or Ethereum. Run it before swaps, listings or purchases. Not financial advice.
Trending liquidity pools right now on Base, Ethereum, Solana or BSC: pool name and address, base token price, 24h volume, liquidity, buy/sell counts and FDV, in the network's trending order. For trading agents scanning what is moving, market monitors and discovery pipelines. Source: GeckoTerminal public data. Not financial advice.
Wallet due diligence for any EVM address on Ethereum or Base: native balance, recent transactions with counterparties, top token holdings with USD values when known, plus anomaly flags for burst activity, concentrated outflows and contract wallets. For counterparty screening, airdrop eligibility checks, portfolio snapshots, or checking a wallet before transacting with it. Sources: public indexers (Blockscout, Etherscan) with on-chain RPC fallback; responses state sources and data_quality.
Current weather and a short forecast for any city worldwide: temperature, feels-like, humidity, wind and precipitation probability, from Open-Meteo public weather models. For travel-planning agents, logistics, event planning and location-aware assistants. Give a city name (or latitude/longitude) and get structured weather JSON.