"Understanding Proxies or Proxy Servers" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
Discovery registry for AI agents: 660+ APIs, MCP servers and CLIs, each health-checked every 6 hours with real requests — full initialize + tools/list handshakes for MCP, real calls for APIs — plus response-schema validation that catches responses which parse fine but are missing a required field.
61Buying advice for the French market: which appliance or electronics to buy, with live prices.
Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, free via PoW or card credits
Secure P2P File Transfer, Encrypted Chat & Communication | Decentralized P2P & AES-256-GCM encryption | Zero cloud logs. Zero registration. For humans and autonomous AI agents / MCP servers.
Remote MCP server for crypto trading signals and the public ledger that scores them, losses included. Read tools: open signals, the signal ledger (matured wins and losses), signals cancelled by the BTC regime veto with the outcome they would have had, market snapshot and ticker for scanned Binance symbols, the scheduled BTC chart read, and news headlines. The public read tools work without a key. With a free API key from ribqa.com: your own bots and strategies, and rate-limited strategy backtests. No tool places, simulates or cancels an order. Free during beta.
Agent-facing tools marketplace over x402, no key or OAuth: Ethereum/Base RPC, wallet tracing, notes.
Free MCP tools for historical exchange rates, country economic indicators and international public-holiday calendars. No account, API key or wallet required for factual tools during the pilot. Holiday coverage combines direct government calendars for France, the United Kingdom and Hong Kong with the international OpenHolidays curated collection. Available countries and years vary: consult list_holiday_regions for current coverage. Preserve national/regional scope, multilingual names, source dates, substitute-day notes and half-day flags. Coverage is not exhaustive worldwide; future dates may change and per-event government confirmation is unavailable for OpenHolidays. Try: the ECB USD-per-EUR reference rate on 2008-09-15; US GDP per capita in current USD for 2000 and 2020; or nationwide German public holidays for 2027 (region oh-de, year 2027, nationwide_only true). Calendar export is available in iCalendar/ICS through the HTTP API. Responses include source citations, observation dates, units, freshness, evidence links and explicit gaps. ECB rates are not live tradable quotes; economic series have publication delays and missing values. Source/schema checks are not independent factual verification. Public pilot without an SLA. Setup and examples: https://datoqa.bhazarstudio.workers.dev/docs/start/ Holiday coverage and calendar export: https://datoqa.bhazarstudio.workers.dev/docs/holidays/ 24 tools in the general edition. Focused editions use the same data: https://smithery.ai/servers/datoqa-data/historical-exchange-rates ; https://smithery.ai/servers/datoqa-data/economic-indicators ; https://smithery.ai/servers/datoqa-data/official-public-holidays .
Search 161,000+ free hand-drawn Infyicon icons in four matching styles and fetch ready-to-embed SVG markup or PNG URLs, plus CSS class lookup for the 61,000-glyph Infyicon UI webfont. Free with attribution, no API key required.
Cross-asset market event intelligence for AI trading agents: SEC, Fed, Federal Register, USGS, Nasdaq halts, DefiLlama, Polymarket and 30+ primary sources scored into per-asset impacts (stocks, ETFs, crypto, commodities, rates). Pay per call (USDC/x402) or API key.
71Cross-asset market event intelligence for AI trading agents. Pay per call (USDC/x402) or API key.
71Turn your data into map images of countries, states, counties and ZIP codes with Ultimaps MCP server. Each map comes with a link to Ultimaps Studio, where you can keep editing it, export it, or publish an interactive version. No account needed: 30 maps per hour, PNG up to 1600px, with Ultimaps attribution.
Agent arena: play server-refereed chess, Connect Four or Liar's Dice for ratings. Free.
Parse WebVTT, SRT, or TTML for conformance, timing, overlaps, line length, and reading speed.
Colombian company and public-procurement data by NIT: RUES commercial registry, SECOP contracts, Supersociedades financials, sanctions and OFAC/UN lists, each field with its official source URL and capture date. No key needed to connect or for radicadouno_comprobar (free, 10/day). Buy a signed report per company (89,900 COP) or a Business key from within the server: no human in the loop. Companies only: no natural persons (Law 1581/2012). Not a credit score.
Send a USPS Certified Mail letter to any US address from ChatGPT, Claude or Grok. The assistant prepares the letter and hands back a review link; a person reads it, checks the recipient, pays and authorizes. Nothing is printed, mailed or charged without that approval. $16.17 with the electronic return receipt, $13.18 without. No subscription, and no account needed to see a price. Docs: https://piloxa.com/send-a-certified-letter-online
International public-holiday calendars combining direct government sources for France, the United Kingdom and Hong Kong with the OpenHolidays curated collection. Discover available countries, territories and years with list_holiday_regions; coverage varies and is not exhaustive worldwide. Get published dates, multilingual names, national/regional scope, inclusive date ranges, substitute-day notes and half-day flags. Filter OpenHolidays entries to nationwide holidays with nationwide_only. Export calendars as iCalendar/ICS through the HTTP API. Try: German nationwide public holidays for 2027 using get_public_holidays with region oh-de, year 2027 and nationwide_only true. Future dates may change. OpenHolidays is a third-party curated source, with no per-event government-confirmation guarantee. No holiday result does not prove a working day. Not school calendars or business opening hours. 5 focused MCP tools. Free during the pilot; no account, API key or wallet required. Citations, freshness, evidence and explicit gaps are preserved. Source/schema checks are not independent factual verification. Public pilot without an SLA. Setup, coverage and calendar export: https://datoqa.bhazarstudio.workers.dev/docs/holidays/
Vehicle routing, 3-D packing, cutting stock, rostering and knapsack with OR-Tools. 7 of 11 free.
Fleet entry point: 22 hosted MCP servers, 160 tools, 110 free. Searches 138 agent skills.
Manage app translations: find missing or duplicate phrases, add languages and export dictionaries.
