One custom connector, about 30 seconds, and every Claude chat can search Facebook Marketplace, eBay, Depop, and Poshmark.
Claude.ai supports remote MCP connectors natively — no install, no browser extension, no API keys. You add the connector once from a desktop browser; after that it works everywhere you use Claude, including the mobile app. The free tier needs no credit card.
Takes about two minutes, once
On claude.ai (desktop browser), click your initials → Settings → Connectors.
Click Add custom connector at the bottom of the connectors list.
Enter https://secondhandmcp.com/mcp and click Add.
Claude opens a sign-in window — use an email magic link or Google. This creates your free account (10 searches/month, no card).
In any chat, ask something like "Find a mid-century coffee table under $200 near San Francisco." Claude will call Secondhand MCP and return real listings.
Yes. Add the connector once from a desktop browser; after that it works in Claude everywhere, including iOS and Android apps.
Custom connectors are available on Claude paid plans. Secondhand MCP itself has a free tier — 10 searches a month, no credit card.
Facebook Marketplace works immediately. eBay works with your own free API keys. Depop and Poshmark are on Pro ($5/mo).
The server is read-only — it can search and fetch listings, never post, message, or buy. Authentication is OAuth 2.1; you can disconnect it from Claude settings at any time.