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Connect your AI assistant (uses your assistant's own quota)
Claude Desktop / Claude Code — paste this into the MCP config
(Settings → Developer → Edit Config), then restart the app:
Copy config
Claude web / ChatGPT with connectors — add a custom connector with
the URL Copy URL
and set the header Authorization: Bearer <your key>.
Any other MCP client — same URL and key; the server speaks standard Streamable HTTP.
Then just talk to your assistant
"Sell my Diplomat fountain pen, good condition, 120 euros" "Find me a used Sony camera under 300 euros on Thingery"
Your seller API key
Keep it private — it publishes listings as you. It is shown only when created or regenerated.
Regenerate key · Connected applications · Log out
Use your own model (for the chat assistant)
Store an OpenAI-compatible API key and the assistant chats on your key instead of Thingery's. The key is encrypted at rest and verified once before saving — it is never shown again.
— account