"Web search tools and methods that don't require API keys" matching MCP servers:

MCP server that wraps Shopify, Amazon, and Google Maps intelligence tools. AI agents pay autonomously in USDC on Base via x402 — no API keys or accounts needed.

Amazon MCP server and Amazon product data API for AI agents. Lets Claude, Cursor, ChatGPT and other MCP clients search Amazon, get real-time prices, reviews, product details, sellers, deals and best seller ranks, or look up any ASIN. One API key, 100 free requests a month.

Real-time last-minute tour and activity booking across 18 suppliers in 15 countries via the OCTO open standard. Search available slots, create Stripe checkout sessions, and check booking status.

This MCP wraps Bitrefill public API to allow agents to search for products and shop using cryptocurrencies like Bitcoin, Ethereum, Solana, and many more.

Enables AI clients to search, compare, and register products by integrating objective specifications, review-derived experiential attributes, and sales conditions such as price, shipping, and stock.

Provides MCP tools for searching and comparing products on Wildberries (and Ozon planned), including product search, detailed card retrieval, and review fetching, normalized for LLM consumption.

Jewellery sizing and gemstone grading tools by FITINY. Carat-to-millimetre conversion for moissanite, diamond and cubic zirconia corrected for each stone's density — every chart online is calculated for diamond, which is wrong for moissanite by about 9%. Also covers GIA colour (D-K) and clarity (FL-SI) scales, ISO 8653 ring size conversion across US/UK/EU, necklace lengths and stud diameter.

Enables agents to access 30 pay-per-event Apify actors for ad, video, reel, and audio transcripts; Google Trends and keyword demand; job boards; Amazon product data; and Instagram data, charging only per delivered item.

Enables AI assistants to check order status and prepare versioned address change proposals that require application-owned approval.

Enables agents to manage a store's catalog, storefront, orders, customers, discounts, and reporting through scoped MCP tools while keeping credentials in local configuration.

Enables AI shopping agents to search products, check stock, apply promotions, manage cart sessions, and create cryptographically signed checkout sessions on e-commerce storefronts, while giving merchants analytics into agent intent and catalog demand gaps.

Enables AI agents to search products across Amazon and live Shopify storefronts, vet merchants, build carts, and obtain checkout URLs via a pay-per-call API with no API key or signup.

Provides tools to search the Mouser Electronics parts catalog via keyword, part number, and manufacturer queries using the Mouser Search API.

An MCP server that enables AI assistants to search and retrieve anime figure data, collections, lists, and clubs from MyFigureCollection.net, including partner listings and barcode lookup.

Enables AI assistants to look up customers, orders, products, and stock; take role-restricted actions such as creating orders and handling refunds; enforce business rules; and maintain a tamper-evident audit log.

Provides access to TCGplayer trading card data, including search, product details, pricing, and market information, enabling natural language queries for card analysis.

Enables Claude Code to interact with PriceCharting pricing data, supporting search, product pricing, categories, and group listings across multiple collectible categories.

Enables querying Shopify App Store apps and Chrome Web Store extensions by category, keyword, or listing URL, returning ratings, reviews, pricing or user counts, and developer website, domain, address, and email. Filters by minimum rating or reviews and produces one row per listing ready for outreach or enrichment.

An MCP server that exposes SF Supplies product search API to LLM tools. Supports free-text search, autocomplete suggestions, and retrieving filterable attributes.

Search Naver (Korea's #1 search engine) for shopping prices, real-time news, and blogs. Perfect for Korean local information.