marketplace-search-mcp

marketplace-search-mcp is an MCP (Model Context Protocol)-based server designed to provide AI assistants (such as Claude Desktop and Cursor) with cross-platform marketplace search, price comparison, license verification, and data query capabilities. This repository is maintained by lulzasaur9192 and contains 22 tools covering more than 15 platforms.

Purpose

This tool is mainly used to retrieve product or service information across multiple e-commerce, second-hand trading, local services, collectibles, and other platforms, and to obtain price data; it also provides contractor and nurse license verification for some U.S. states, PSA card authentication and population data, and government and regulatory data queries.

Main Capabilities

• Marketplace Search:marketplace_search The tool can search 13 marketplaces at once, including TCGPlayer, Reverb, Grailed, Redfin, Bonanza, ThriftBooks, AbeBooks, Goodreads, OfferUp, Swappa, StubHub, Craigslist, and Poshmark.
• Specialized Search:search_imdb(movies/TV, supports browsing lists such as Top 250 and Most Popular),search_houzz(find home design professionals by Houzz URL),search_thumbtack(filter local service professionals by location).
• License Verification:verify_contractor_license Supports contractor license verification for CA, TX, FL, and NY;verify_nurse_license Supports nurse license verification for FL and NY.
• Collectibles and Grading:psa_population_report Provides PSA card authentication and population data.
• Real Estate and Construction:search_nyc_violations Query New York City DOB building violation records;search_estate_sales and estate_sale_details query estate sales;search_storage and storage_facility_details query self-storage facilities and pricing and facility information.
• Government and Regulatory:search_fcc and fcc_details query FCC ID certification;search_gsa_auctions、gsa_auction_details、gsa_auction_stats query government surplus asset auctions and market statistics.
• Cost Estimation:childcare_cost、childcare_states、childcare_compare Provides childcare cost lookup and comparison;home_service_cost Provides home service cost estimates.
• Security Verification:skillguard_verify Can verify the security of AI agent skills (returns SAFE/CAUTION/DANGER).

Usage

Add this server to the MCP configuration in Claude Desktop or Cursor to use it. Optionally set the environment variable MARKETPLACE_API_KEY for authenticated access and a higher quota. For higher rate limits and dedicated support, you can subscribe to the relevant services on RapidAPI (TCGPlayer Price Data, Reverb Music Gear Listings, Thumbtack Pro Directory).

Use Cases

Suitable for AI-assisted workflows that require product price comparison across multiple marketplaces, local service lookup, license verification, collectible grading queries, government data retrieval, and cost estimation.

Limitations

License verification covers only some states (contractors: CA, TX, FL, NY; nurses: FL, NY). The specific data coverage, update frequency, and accuracy of other features are not provided. The MCP environment must be configured by the user before use, and some features may require API keys or a RapidAPI subscription.