"1&1" matching MCP connectors:

Public, read-only MCP over the complete 64-hexagram I Ching corpus. Deterministic lookup only.

Condition-aware ingredient & product safety intelligence for agents: verdict + evidence tier + per-claim evidence_state (cited = ≥1 verified citation / referenced = sourced-but-unverified) + citations, across breastfeeding, pregnancy, histamine/MCAS, rosacea, HS, allergy, fertility, and toddler lenses. Includes validate_claim to fact-check a free-text health claim against curated cited sources.

Order official German energy certificates (Energieausweis) from chat — on invoice, 1-2 days.

Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev

GW1 build compiler: skill data, template code encode/decode, validation, hero roster. Read-only.

Anonymous read-only Formula 1 tools, resources, prompts, completion, and interactive dashboard.

Kuaishou hot search, work/user search, work details, comments/replies, profiles, transcript.

Deterministic Scope 1/2/3 GHG inventories with bundled factors and audit hashes.

Hosted MCP server for solar vitamin D. Six public tools, no account needed: find a city, sun times and golden hour, the synthesis window for a day, the whole year of viable months at a latitude, whether right now is a good moment from live UV, and what a sun session produced. Four more read a signed-in user profile, cities and sun history over OAuth 2.1. Built on NOAA solar geometry, a Madronich clear-sky UV model with ozone, MED by Fitzpatrick skin type, and live Open-Meteo data.

R_net LP risk evaluator for DeFAI agents. IL + Breakeven Corridor O(1). L402 Lightning paywall.

建設・リフォーム見積もりの誠実性を適正レンジで監査するMCP App(UI付き・出典検証込み)。Audits whether a Japanese construction/renovation quote is fair against HORIZON SHIELD's supervised price ranges. Interactive audit card with verifiable provenance (JCCDB, signed).

M12 lens and C-mount lens finder with image-sensor matching and field-of-view calculator.

Pretraga provjerenih oglasa za prodaju i najam nekretnina u Hrvatskoj na trazimstan.hr.

SEC Form D fundraising intelligence.

Real, calibrated Dota 2, Deadlock & Marvel Rivals win predictions, tier lists & counters.

Fiscal y nomina MX: recargos, ISR, CFDI, RESICO, calendario, IMSS, aguinaldo, finiquito.

出海合规预检 · Source-cited EU/US/UK/AU market-access checks for cross-border sellers

Breach intelligence API: email search, domain monitoring, passwords and stealer logs.

B2B people and company data for AI agents. Search 700M+ professionals by role, company, and industry. Reveal verified work emails and direct phone numbers inline. Free to search, 1 credit per verified reveal. Supports Claude Desktop, Claude Code, Cursor, and any MCP client.

Cost segregation study pricing and Year-1 depreciation/tax-savings estimates for US properties.