"Y Combinator" matching MCP connectors:

Search real hotels, get live per-night quotes, and check out — all in chat. Guest search and checkout-link tools need no sign-in; OAuth unlocks saved trips, booking management, and one-click checkout. Renders interactive results, hotel-detail, and checkout widgets.

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.

CatchAll is a web search API built for comprehensive event retrieval — not ranked results, but all matching records.

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.

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

Ingredient, supplement & food safety for agents: verdicts, recall checks, interactions, safer swaps

Spain legal MCP for visas, residency, Beckham Law, NIE/TIE, nationality, tax, tools, and handoff.

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

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

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

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

Create, inspect, manage, and render charts and data visualizations as SVG/PNG or interactive embeds.

DeFi pool yield+security intelligence & token/contract risk scanner. USDC on Base via x402.

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

Validate HTML and CSS, audit SEO and JSON-LD, and check user-authorized public links.

The prediction MCP — score your prompt before you generate, so you never waste a credit.

Query, join, profile, clean and convert CSV/JSON/Parquet with server-side DuckDB over MCP.

Excel analytics: inspect, query (JSON rows), charts, and JSON-to-xlsx workbook writing.

Hosted Chromium in mainland China: scripted actions, URL screenshots, print-to-PDF.