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 "ar_cbu", "ar_cuit", "ar_dolar" and 5 more (3 tools before, 11 now)
Validate Argentine CBU/CVU — Validate an Argentine bank account number (CBU) or virtual account (CVU): checks both check digits offline and returns type, entity/branch codes, bank name for major banks and a formatted value. Send {cbu}. Nothing is stored. Paid tool: 0.01 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the PaymentPayload in params._meta["x402/payment"]. Returns JSON text; the settlement is in result._meta["x402/paymen…
Validate Argentine CUIT/CUIL — Validate an Argentine tax ID (CUIT/CUIL): checks length, prefix and modulo-11 check digit offline, and returns normalized and formatted values plus entity type (person/company). Send {cuit}. Nothing is stored. Paid tool: 0.01 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the PaymentPayload in params._meta["x402/payment"]. Returns JSON text; the settlement is in result._meta["x402/payment-response"].
Argentina dollar quotes — Current Argentine dollar quotes (ARS per USD): oficial, blue, bolsa (MEP), contado con liquidacion (CCL), mayorista, cripto and tarjeta, with buy/sell, spread, update time and the blue vs oficial gap. Send {} for all or {casa} for one. Source failure = no charge. Paid tool: 0.002 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the PaymentPayload in params._meta["x402/payment"]. Returns JSON text; the set…
Argentina holidays and business days — Argentine national holidays (feriados, incl. puentes turisticos) for a year, and optionally a date check: weekday, holiday name, is_business_day, next business day, and date + N business days (skips weekends and holidays). Send {} for this year, {year}, or {date, add_business_days}. Source failure = no charge. Paid tool: 0.002 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the PaymentPayload in params._…
Argentina inflation (INDEC) — Argentine consumer price inflation from INDEC: latest monthly %, year-over-year %, last 12 months, and optionally the compounded cumulative inflation between two months with an amount adjusted for inflation (rent, salary, price updates). Send {} or {from: YYYY-MM, to: YYYY-MM, amount}. Source failure = no charge. Paid tool: 0.002 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the PaymentPayload in param…
Normalize Argentine phone — Parse and normalize an Argentine phone number written in any local style (011 15 1234-5678, +54 9 11..., 0351 4..., 15 prefix): strips trunk 0 and mobile 15, returns the 10-digit national number, E.164 in landline (+54) and mobile (+549) forms, a wa.me WhatsApp link and whether it is a mobile. Offline, nothing is stored. Send {phone}. Paid tool: 0.01 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the Pa…
Currency exchange rate — Daily mid-market exchange rate between two fiat currencies (ISO 4217, e.g. USD, EUR, ARS, BRL, JPY) with optional amount conversion, from blended central-bank reference rates (ECB and others, via Frankfurter). Send {from, to, amount}. Unsupported currency = no charge. Paid tool: 0.002 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the PaymentPayload in params._meta["x402/payment"]. Returns JSON text; th…
Web page audit — Quick technical and SEO audit of a public web page: HTTPS and redirect, status, response time, title and meta description, viewport (mobile), h1, canonical, Open Graph, alt text, structured data, compression and security headers. Returns a 0-100 score, grade and prioritized issues. Send {url}. Charged only if the page could be fetched. Paid tool: 0.02 USDC per call via x402 (USDC on Base, Polygon or Solana, no account or key). An unpaid call returns a payment-required result (isError, structuredContent with x402Version 2 and accepts); sign one of the accepts and retry the same call with the P…
Certificate recorded, valid to 2027-01-15
Authorization not required
Changed the definition of "list_paid_apis"
⟨54 unchanged words⟩ (0.01), web page SEO/security audit (0.02), UUID, time, secure random, hash, keccak256/function selector, base64, slug, text stats and IP utilities (0.001 each)and the landing page generator (0.25). ⟨11 unchanged words⟩
Changed the definition of "list_paid_apis"
⟨7 unchanged words⟩ agents can buy with USDC via x402 (Base, Polygon orPolygonSolana), with URL, price, input schema and ⟨70 unchanged words⟩
Changed the definition of "list_paid_apis"
⟨19 unchanged words⟩ , price, input schema and an example: Argentina dolar quotes (oficial, blue, MEP, CCL, cripto, tarjeta) and FX exchange rate (0.002),UUID,Argentinetime,CUIT/CUILsecureandrandomCBU/CVU validators andhashArgentineutilitiesphone(0.001normalizereachto E.164 + WhatsApp link (0.01
Unknown → Live
First tool surface recorded: 3 tools (server version 1.0.0)
https://landingen24h.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