"An open-source relational database management system" matching MCP connectors:

Read-only breach intel, full history 2007-today: reports THAT an org was breached, never the data.

Search domain availability and pricing, straight from chat, then open a link to register.

Enumerate and inspect PubFi capabilities, then execute an exact selected route.

Host-owned vacation-rental direct booking via VRP. Signed offers, 0% commission. Not an OTA.

Structured habitat data and advisory tools for aquariums, marine tanks, terrariums and paludariums.

MCP server for Brazilian Federal Senate open data (legislative, administrative, e-Cidadania).

AMZScout Skill + MCP gives AI agents live access to real Amazon marketplace data across 14 Amazon marketplaces. Analyze any ASIN, validate product ideas, research niches, compare competitors, discover profitable keywords, and build data-driven PPC strategies using trusted Amazon insights instead of AI assumptions. Works with Claude, ChatGPT, Cursor, and any other MCP-compatible AI client. To connect, you'll need an AMZScout API plan and authorize your account. Get access and view pricing here: https://learn.amzscout.net/amazon-product-api-for-ai-agents

Closed-source remote MCP: model benchmarks, costs, HN signals, tech registry.

Taiwan stock market data (TWMD): official-source, point-in-time-safe datasets via read-only tools.

Hosted, OAuth-gated endpoint for quantakrypto's post-quantum crypto tools: scan code for quantum-vulnerable cryptography (RSA/ECDH/ECDSA/DH) and get NIST ML-KEM/ML-DSA/SLH-DSA migration guidance over authenticated HTTP — nothing to install. Sign-in required (Google/GitHub/email). Same tools as the open-source @quantakrypto/mcp server; source at github.com/quantakrypto/pqc-tools.

The Apiosk MCP lets AI agents discover, pay for, execute, and publish APIs through the Apiosk gateway. It is a machine endpoint, not a website, so connect it from an MCP client (Claude, Cursor, ChatGPT, and others) rather than browsing it here.

An MCP server that audits the fairness of construction and renovation estimates in Japan. Provides fair-price ranges, overcharge detection, and verifiable unit-cost data based on JCCDB (65,729 items, DOI-backed).

clariBI is an AI-powered business intelligence platform built for small and mid-sized SaaS, ecommerce, and operations teams. Instead of writing SQL or building dashboards manually, users ask questions in plain English ("what's our CAC by channel last quarter?") and the AI engine pulls the data from Stripe, HubSpot, Google Analytics, ad platforms, Jira, and 30+ other sources via the open Model Context Protocol. Dashboards generate themselves on source connect.

Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.

Secureship MCP gives AI assistants access to a multi-carrier shipping API covering rate comparison, label generation, package tracking, pickup scheduling, address book management, shipment history, customs documents, and more — across carriers like UPS, FedEx, Purolator, Canpar, and others. Browse 150+ live endpoint schemas, parameters, and auth details — always current, never stale.

Real-time crypto market intelligence for AI agents. Live price, funding rate, open interest, buy/sell ratio, fear/greed, orderflow, and OHLCV history across 20 exchanges and 24 tokens. Address risk scoring included.

An instrumented editing loop for AI drafts: ai_tell_scan scores how human a draft reads with quoted evidence, burstiness_report maps sentence rhythm, voice_fingerprint profiles a real person's writing numerically, and the premium humanize_plan / verify_rewrite pair produces a rewrite brief and proves the result moved toward the target voice.

A skeptical senior-engineer code reviewer over MCP: risk-scans unified diffs, flags AI-generated-code tells, reports complexity hotspots, scans for leaked secrets, and runs an OWASP security pass — real analyzers, no external APIs. Free tier, no signup.

xmagnet — AI-powered B2B CRM for Claude. 35 tools that turn natural-language prompts into real CRM actions: prospect, enrich, score leads, manage deals, scan buying intent, run email campaigns and sequences, build forms and landing pages, refine ICP, and analyze performance — all directly inside Claude. 🚀 ONE-CLICK INSTALL: https://api.xmagnet.ai/claude The install page guides Claude users through 3 steps in under a minute: open Claude Connectors, paste the connector name, paste the server URL, sign in. A reviewer workspace is auto-provisioned on first sign-in with sample contacts, deals, campaigns, and ICP suggestions, so every tool works end-to-end with zero setup. No 2FA. No paid plan required. Free tier exposes all 35 tools. What you can do: • Prospecting — search_contacts, search_companies, search_investors, find_contacts_at_companies, enrich_contact, validate_email, find_competitors, company_intelligence • Pipeline — get_deals_pipeline, scan_deal_intent, get_ghost_pipeline, create_deal • Campaigns & sequences — create_campaign, generate_campaign_content, get_campaign_stats, get_bounce_stats, get_unsub_stats, create_sequence_draft, list_sequences • Top of funnel — suggest_icp, get_icp, create_form, list_forms, create_landing_page, list_landing_pages, show_suggestions • Operations — analyze_contacts, get_contact_details, update_contact, save_contacts_to_crm, export_contacts, get_dashboard_stats, get_credit_balance Example prompts to try: • "Find C-suite contacts at fintech companies that raised Series A in the last 6 months." • "Scan my open deals for buying intent and prioritize follow-ups." • "Generate a re-engagement campaign for contacts who opened my last newsletter but didn't reply." • "Show me my deals pipeline by stage with weighted value and win rate." • "Generate a landing page for my Q2 webinar with a registration form." Built for founders, SDRs, RevOps, and growth teams who want their CRM to take action — not just store records. Install: https://api.xmagnet.ai/claude · Site: https://xmagnet.ai · Privacy: https://xmagnet.ai/privacy-policy · Terms: https://xmagnet.ai/terms-of-service · Support: ashish.sinha@xmagnet.ai

Deploy a multi-user web app from your agent: hosting, auth, database, and permissions.