One subscription: $20 and 2,000,000 requests per month.
Send the API key as a bearer token:
Authorization: Bearer $ONESOURCE_API_KEY Copy Skip the subscription and pay per call instead, with x402 (USDC on Base) or MPP (Tempo).
curl https://api.onesource.io/deepstate/v1/markets Copy A plain call like this comes back 402 Payment Required. The response tells your client how to pay.
Add the OneSource MCP server to your agent, then ask for Deepstate books, trades, candles, and analytics in plain language. Paste your API key where it says sk_..., or set a wallet key instead to pay per call.
Claude Code Codex CLI Cursor / Claude Desktop Hosted server
claude mcp add onesource -e ONESOURCE_API_KEY=sk_... -- npx -y @one-source/mcp@latest Copy