"MCP servers that work without API keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Global stock and UCITS ETF research. Free: 700 successful MCP tool calls per rolling 30 days. Pro: CHF 5/month or CHF 50/year for higher usage. Screen stocks, compare fund costs and holdings, and inspect company risks. No account or API key for public research. Plans: https://bull-run.org/pricing. Connect your Bullrun account through OAuth to use Pro.
Real Amazon (US, UK, DE, CA, AU) & Walmart shopping data for AI assistants: ranked product shortlists, current prices, live stock, real ratings, and price/BSR history from a 17M+ product warehouse. Free hosted endpoint, no signup — 30 queries a day.
Public chauffeur information, policies and anonymous price previews in the provider’s published service areas. On explicit customer request, prepare a binding unpaid offer using email OR E.164 phone, without an account. Customers review bound terms and explicitly confirm in Samuelz checkout. The same endpoint provides OAuth-protected booking status, payment review, history, and amendment/cancellation workflows. Booking data and actions require authorized customer access; changes and cancellations require the applicable object-bound consent. Tool discovery is public. Quotes do not guarantee availability, and MCP does not take payment.
WHOIS, RDAP, DNS, IP / ASN / CIDR and Web3 name (ENS, Unstoppable, Handshake) lookups. No API key.
Free US local event search. No signup or API key; 90-day lookahead. Paid commercial and bulk access.
Read-only RuneScape 3 item lookup, Grand Exchange guide prices, daily history, flip scenarios, public hiscores (normal, ironman and hardcore), and Wiki source discovery for Claude and ChatGPT. Wiki article text requires a reviewed revision; other pages return source links. Hosted Streamable HTTP; no account, API key or local installation. Guide prices lag the live market. Independent Birdwell Labs project; unaffiliated with Jagex or the RuneScape Wiki.
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.
Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.
Design quality gate for AI-generated UI: score any URL on 45 deterministic checks, A–F grade.
One MCP endpoint for 414 data APIs across 90 platforms, including TikTok, Instagram, YouTube, Amazon, Xiaohongshu (RedNote) and Douyin, plus 17 web search tools and CAPTCHA solving for 52 types. Pay per call from $0.56 per 1,000 calls; failed or empty calls are not charged.
Technology intelligence feed for AI agents: tech stack, compliance, security.
Public directory of UK medical cannabis clinics, pharmacies, products and strains.
Best-route swap quotes, token search and USD prices across EVM chains. Read-only, never trades.
Find lookalike domains of a brand's website and see which resolve and what they show.
Free, no-key AI news + AI regulation tracker MCP: EU AI Act, US federal & state, UK. Daily briefing.
Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, or free via proof-of-work
ESG knowledge base for AI agents: hybrid search, glossary, frameworks, industries, graph traversal.
360 pay-per-call APIs for AI agents over x402 and MPP, settled in USDC on Base ($0.001-$0.25 a call, no account or API key). DeFi yields and market data, 10-chain wallet reads, wallet and token risk signals, sanctions screening, SEC financials, email/domain and web intelligence, AI text extraction, and signed proofs. Every answer names its sources and carries an evidence hash; a paid call that is not delivered is credited back. Built and run by UnyKorn LLC.
Search the FAA handbooks, advisory circulars and Airman Certification Standards (ACS) used for pilot training, and read any page in full with its figures, charts and tables. Every result links back to the exact page so answers can be cited. Free, public, no API key.
Auto-Apply That Ends on an Interview. Job matches, applications sent on the employer's own hiring system, employer-receipt tracking, per-role resumes, cover letters, interview prep.
