{
  "service": "Moltline Studio MCP fleet",
  "description": "22 hosted MCP servers over Streamable HTTP. The free tier needs no account, no registration and no credentials.",
  "documentation": "https://moltlinestudio.com/servers.html",
  "terms": "https://moltlinestudio.com/terms.html",
  "contact": "support@moltlinestudio.com",
  "endpoints": "https://mcp.moltlinestudio.com/{server}",
  "free_tier": {
    "price": "0",
    "currency": "USD",
    "description": "110 of the 160 tools across all 22 servers, free forever. No account and no credentials are required to call them."
  },
  "plans": [
    {
      "name": "All-Access",
      "price": "19.00",
      "currency": "USD",
      "period": "month",
      "description": "Unlocks the premium tools on every one of the 22 servers. Checked server-side on each premium call.",
      "checkout": "https://moltlinestudio.com/#allaccess"
    },
    {
      "name": "All-Access day pass",
      "price": "2.00",
      "currency": "USD",
      "period": "through the end of the next UTC day (24 to 48 hours)",
      "description": "The same premium access as All-Access for one job. Agent-native, bought over x402.",
      "checkout": "https://moltlinestudio.com/api/premium/day-pass"
    }
  ],
  "payment_protocols": [
    "x402"
  ],
  "x402": {
    "description": "Agent-native payment. Request the resource below for an HTTP 402 challenge: x402 v2 terms in the PAYMENT-REQUIRED header, x402 v1 terms in the body. Any standard x402 client can pay (scheme exact); a wallet without one can pay by direct transfer and redeem as below.",
    "resource": "https://moltlinestudio.com/api",
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "USDC",
    "assetAddress": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "19000000",
    "payTo": "0x7A92F1F48FFEBe3AeF2373adD44cc8B174d9E0C7",
    "x402Versions": [
      1,
      2
    ],
    "eip712Domain": {
      "name": "USD Coin",
      "version": "2"
    },
    "pay": {
      "headers": {
        "v2": "PAYMENT-SIGNATURE",
        "v1": "X-PAYMENT"
      },
      "payload": "An EIP-3009 transferWithAuthorization for exactly 19 USDC, to payTo, signed by the paying wallet",
      "settlement": "Settled on Base through an x402 facilitator; the license key is issued once Base confirms the USDC transfer",
      "response": "200 with the license key in the JSON body; the settlement in PAYMENT-RESPONSE (v2) or X-PAYMENT-RESPONSE (v1)",
      "note": "Each signed authorization buys one key, once. The official x402 Python SDK caps a single payment at 1 USD by default; raise max_amount_per_payment to pay this amount."
    },
    "redeem": {
      "description": "Direct transfer, for a wallet without an x402 client: send exactly the amount to payTo, then retry the resource with this header.",
      "header": "X-PAYMENT",
      "format": "{\"txHash\": \"0x...\", \"signature\": \"0x...\"}",
      "signature": "EIP-191 personal_sign by the wallet that sent the USDC, over the text 'Moltline x402 claim <txHash lower-case>'",
      "maxTxAgeSeconds": 3600,
      "note": "A transaction hash alone is not accepted: the payer must prove control of the sending wallet."
    }
  },
  "x402_day_pass": {
    "description": "Agent-native day pass. Request this resource for an HTTP 402 challenge and pay exactly as for the month: any standard x402 client, or a direct transfer redeemed as below.",
    "resource": "https://moltlinestudio.com/api/premium/day-pass",
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "USDC",
    "assetAddress": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000000",
    "payTo": "0x7A92F1F48FFEBe3AeF2373adD44cc8B174d9E0C7",
    "x402Versions": [
      1,
      2
    ],
    "eip712Domain": {
      "name": "USD Coin",
      "version": "2"
    },
    "pay": {
      "headers": {
        "v2": "PAYMENT-SIGNATURE",
        "v1": "X-PAYMENT"
      },
      "payload": "An EIP-3009 transferWithAuthorization for exactly 2 USDC, to payTo, signed by the paying wallet",
      "settlement": "Settled on Base through an x402 facilitator; the license key is issued once Base confirms the USDC transfer",
      "response": "200 with the license key in the JSON body; the settlement in PAYMENT-RESPONSE (v2) or X-PAYMENT-RESPONSE (v1)",
      "note": "Each signed authorization buys one key, once. The official x402 Python SDK caps a single payment at 1 USD by default; raise max_amount_per_payment to pay this amount."
    },
    "redeem": {
      "description": "Direct transfer, for a wallet without an x402 client: send exactly the amount to payTo, then retry the resource with this header.",
      "header": "X-PAYMENT",
      "format": "{\"txHash\": \"0x...\", \"signature\": \"0x...\"}",
      "signature": "EIP-191 personal_sign by the wallet that sent the USDC, over the text 'Moltline x402 claim <txHash lower-case>'",
      "maxTxAgeSeconds": 3600,
      "note": "A transaction hash alone is not accepted: the payer must prove control of the sending wallet."
    }
  }
}