"Free tools or resources that do not require an API" matching MCP connectors:

500+ pay-per-call tools + skill packs. USDC + USDG on 12 chains, or free via proof-of-work.

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

Hosted MCP memory: save sessions/decisions once, search from Claude, Cursor, ChatGPT. EU-hosted FTS.

SEO research SaaS exposed as 30+ MCP tools. Forge niche analysis, plans, and writer-ready briefs.

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

Verified local-business leads: search any niche + city, query your library, export to your CRM.

Zillow MCP for AI agents: property data, Zestimates & listings — 300+ fields per home. Free tier.

AI-readable directory + commerce layer: 3,500+ SEA businesses, plus products from verified stores.

One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

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

Query a live PrestaShop e-commerce store: search the catalog, get product details, real-time prices and stock. Fondouk is an open-source module (MIT) that makes any PrestaShop store speak MCP and UCP — this connector is its public demo store. Read-only, public data only.

For queries a model can't confidently place: resolves or declines. Built to decline, not guess.

Free walking tours & activities in 1,000+ cities — live availability, ratings & booking links.

Search 30,000+ decided U.S. security-clearance (DOHA) decisions: cases, outcomes, statistics, and timelines, with a citable link for every answer. CASE is the searchable public record of DOHA industrial security-clearance decisions from 1996 to the present, refreshed nightly.

Latvian property portal: search rentals, sales & nightly stays; market stats; owner tools via OAuth.

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

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

Search the AI Tool Directory catalog: tool details, status checks (alive/acquired/deceased + cause and date), alternatives, and side-by-side comparisons. Read-only.

Recherche d'offres de stage et d'alternance en France via le réseau iQuesta.com

Product search and price comparison for AI agents. Search 100M+ products across thousands of retailers by text or image, compare live offers and prices, and turn any merchant URL into structured product data. No API key required to start; add one for unlimited use and affiliate commission.