Api Endpoint

Barker

Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.

Open interactive test console

Offering

Provider: mcp.barker.money
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Blockchain And Crypto
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://mcp.barker.money/barker_defi_vaults
MIME type: application/json
First seen: 2026-10-16T01:50:06.715Z
Last seen: 2026-11-03T16:25:49.490Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 1000 atomic units
Atomic price: 1000 · Network: eip155:196 · Asset: 0x779ded0c9e1022225f8e0630b35a9b54be713736 · Scheme: exact
Payment option 2: 1000 atomic units
Atomic price: 1000 · Network: eip155:196 · Asset: 0x779ded0c9e1022225f8e0630b35a9b54be713736 · Scheme: aggr_deferred
Payment option 3: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 4: 1000 atomic units
Atomic price: 1000 · Network: eip155:1 · Asset: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 · Scheme: exact
Payment option 5: 0.001 USDC
Atomic price: 1000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 6: 0.001 USDC
Atomic price: 1000 · Network: eip155:42161 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:196",
    "asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
    "amount": "1000",
    "payTo": "0x1a53ab9f9182d4054fadf385ebfcc53b2902dcc4"
  },
  {
    "scheme": "aggr_deferred",
    "network": "eip155:196",
    "asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
    "amount": "1000",
    "payTo": "0x1a53ab9f9182d4054fadf385ebfcc53b2902dcc4"
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0x1a53ab9f9182d4054fadf385ebfcc53b2902dcc4"
  },
  {
    "scheme": "exact",
    "network": "eip155:1",
    "asset": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
    "amount": "1000",
    "payTo": "0x1a53ab9f9182d4054fadf385ebfcc53b2902dcc4"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "1000",
    "payTo": "0x1a53ab9f9182d4054fadf385ebfcc53b2902dcc4"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "1000",
    "payTo": "0x1a53ab9f9182d4054fadf385ebfcc53b2902dcc4"
  }
]

Observed health

Status: Healthy
Latest latency: 1096 ms
Average latency: 1088 ms
HTTP status: 402
Last checked: 2026-11-03T16:25:49.485Z
Reachability: 100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "asset": {
          "type": "string",
          "description": "Stablecoin symbol (lowercase): usdt, usdc, dai, usde, usds, fdusd, gho, crvusd, pyusd, sdai, frxusd, tusd, lusd, dola, etc."
        },
        "chain": {
          "type": "string",
          "description": "Chain name (lowercase): ethereum, bsc, arbitrum, base, polygon, optimism, avalanche, solana, etc."
        },
        "sort": {
          "type": "string",
          "enum": [
            "apy",
            "tvl"
          ],
          "description": "Sort key"
        },
        "limit": {
          "type": "integer",
          "minimum": 1,
          "maximum": 100,
          "description": "Row count (default 50, max 100)"
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "asset": {
              "description": "Stablecoin symbol (lowercase): usdt, usdc, dai, usde, usds, fdusd, gho, crvusd, pyusd, sdai, frxusd, tusd, lusd, dola, etc.",
              "type": "string"
            },
            "chain": {
              "description": "Chain name (lowercase): ethereum, bsc, arbitrum, base, polygon, optimism, avalanche, solana, etc.",
              "type": "string"
            },
            "limit": {
              "description": "Row count (default 50, max 100)",
              "maximum": 100,
              "minimum": 1,
              "type": "integer"
            },
            "sort": {
              "description": "Sort key",
              "enum": [
                "apy",
                "tvl"
              ],
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}