Connect your tool
Pick which of quarry's two addresses to give your assistant, coding agent, or framework, and how to use your subscriptions from it.
quarry is an MCP server. MCP (Model Context Protocol) is how assistants, coding agents, and frameworks plug in outside tools: you give them an address.
quarry has two:
| You want to | Address |
|---|---|
| Search quarry and read free datasets, with no account | The free address, https://quarry.market/api/mcp |
| Use quarry in Claude, connecting your account when Claude needs it | The free address, filled in by Add quarry to Claude |
| Also use your subscriptions, signing in when your tool asks | The sign-in address, https://quarry.market/api/agent/mcp |
| Use your subscriptions from code or a server | The free address, with an API key sent as Authorization: Bearer qk_... |
The sign-in address is also shown under Connected agents on your Subscriptions page. An agent that holds its own USDC wallet can pay per question with the free address and no account: see Give your assistant a wallet.
Pick your tool
- Chat assistants: Claude and ChatGPT, plus Perplexity and Mistral Le Chat for free datasets.
- Coding agents: Claude Code, Cursor, VS Code, Codex, Devin, Gemini CLI, Goose, and OpenClaw.
- Frameworks and SDKs: LangChain, LlamaIndex, the OpenAI Agents SDK, Pydantic AI, Google ADK, CrewAI, the Vercel AI SDK, Mastra, and the OpenAI and Anthropic APIs.
- Other platforms: Microsoft Copilot Studio, n8n, and OpenAPI imports.
Setting quarry up for a team? See Share with your team.
Try it
Once connected, ask a question that needs sources, such as "Find a dataset on semiconductor supply and cite what it says about lead times." Your assistant searches quarry, picks a dataset, asks it, and cites the file, page, and listing link.