"Services or tools that don't require a separate API key" matching MCP connectors:

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

US funding-stress warning with construction-PIT evidence limits and explicit eligibility flags.

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Live internet-censorship signals and tamper-evident, pre-registered, hash-chained AI model evals.

Search and compare attributed recipe records through a public read-only remote MCP endpoint.

French & European company registry for AI agents: KYB, sanctions, annual accounts. x402, no API key.

Verified US local service providers across 10 home-services trades. Ratings, hours, no API key.

City geocoding and timezone resolution for birth data, for AI agents, one API key.

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).

US crime scores, incidents, neighborhood demographics, rent data, and offender search by address.

A Model Context Protocol server that provides Philippine License to Sell (LTS) verification data to LLMs. Built on Cloudflare Workers with Supabase. Public, read-only, no authentication required. Data sourced from the Department of Human Settlements and Urban Development (DHSUD) License to Sell registry and cross-referenced with published real estate projects on REN.PH.

MCP server for the Philippine Standard Geographic Code (PSGC) API. Gives AI agents structured access to the full PH geographic hierarchy - regions, provinces, cities, municipalities, and barangays.

Nonpartisan U.S. Congress data: bill decodes, rep lookup, bilingual EN/ES, read-only, no accounts.

Visa & entry requirements for 199 passports, cited to official sources and re-verified daily.

Swiss weather data for AI assistants — forecasts, measurements, stations, pollen.

Taiwan Stock Exchange (TWSE) open data as MCP tools: stock quotes, ETF data, 140+ public datasets.

KOSPI/KOSDAQ closing prices and DART regulatory filings. Free, no signup, no API key.

Open, verified shop database for AI agents: products, offers, price comparison, trust and coupons.

SAM.gov contract opportunities and entity lookup (BYOK) plus USASpending federal award data.