x402 List

x402 Protocol Service Directory

●

Hugen DeFi Intelligence API

Blockchain

DeFi data and token security API. Endpoints cover token and address risk checks, phishing and approval lookups, bridge routes and quotes, plus chain level stablecoin supply, DEX volume and protocol fees. JSON over GET, $0.01 per call in USDC on Base or Solana.

Pay from $0.01 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

UPTIME 24H 100% │ 7D 100% │ 30D 100%
BASE URL https://defi.hugen.tokyo │ ENDPOINTS 6 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-07-20 │ MONITORED SINCE 2026-07-20

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
566ms
avg response
377ms
total checks
47
compliance A (11/11)

11 of 11 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 (p67 in Blockchain)
price (min)
$0.01
category percentile (min)
p67 in Blockchain
endpoints / prices
6 / 1
model
flat
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

traction $8.77 30d · 49 buyers
volume 30d
$8.77
buyers 30d
49
settlements 30d
539
last settlement
2026-07-21
top buyer share
32% of 30d volume
trend 7d vs 30d
0.62x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d

Attributed pro-quota: this payout address is shared, so volume and buyers are the operator-level figure divided by the services sharing it. A declared convention, not an individually observed measure, and still a conservative undercount.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

Provides DeFi security and data endpoints including token audits, bridge routing, and protocol analytics.

category
defi-security
in
query params
auth
none
defiblockchainsecuritytoken-auditsbridge-routingprotocol-analytics

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET
GET /defi/chains $0.01 Base/Solana USDC
GET /defi/dex/volume $0.01 Base/Solana USDC
GET /defi/fees $0.01 Base/Solana USDC
GET /defi/phishing $0.01 Base/Solana USDC
GET /defi/stablecoin/chains $0.01 Base/Solana USDC
GET /defi/token/solana $0.01 Base/Solana USDC
6 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /defi/chains returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://defi.hugen.tokyo/defi/chains'
// 402 response (captured by monitor) · 6 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://defi.hugen.tokyo/defi/stablecoin/chains",
      "mimeType": "application/json",
      "description": "Stablecoin distribution by blockchain — total circulating USD-pegged value on every supported chain. Track stablecoin flows and chain-level liquidity. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "chains": [
                {
                  "name": "Ethereum",
                  "totalCirculatingUSD": {
                    "peggedUSD": 70000000000
                  }
                }
              ],
              "total_chains": 20
            }
          }
        },
        "tags": [
          "defi",
          "security",
          "bridge",
          "tvl",
          "rugpull"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "defi",
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://defi.hugen.tokyo/defi/token/solana",
      "mimeType": "application/json",
      "description": "Token security audit on Solana — detect honeypots, freeze authority, mint authority abuse, and holder concentration risks. Full SPL token analysis including metadata verification and liquidity pool checks. No API keys needed. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "address": "So11111111111111111111111111111111111111112"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "buy_tax": "0",
              "is_proxy": false,
              "sell_tax": "0.03",
              "is_in_dex": true,
              "trust_list": true,
              "is_honeypot": false,
              "is_mintable": false,
              "holder_count": "15234",
              "is_open_source": true
            }
          }
        },
        "tags": [
          "defi",
          "security",
          "bridge",
          "tvl",
          "rugpull"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "defi",
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://defi.hugen.tokyo/defi/phishing",
      "mimeType": "application/json",
      "description": "Check if a URL is a known crypto phishing or scam site — covers fake DEX frontends, wallet drainers, approval phishing pages, and counterfeit protocol clones. Real-time detection against threat intelligence databases. No API keys needed. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://uniswap.org"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "phishing_site": false,
              "website_contract_security": true
            }
          }
        },
        "tags": [
          "defi",
          "security",
          "bridge",
          "tvl",
          "rugpull"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "defi",
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://defi.hugen.tokyo/defi/chains",
      "mimeType": "application/json",
      "description": "List all blockchain networks supported by this API's security scanning — Ethereum, BSC, Polygon, Arbitrum, Base, Optimism, Avalanche, Fantom, Solana, and 20+ chains with chain IDs and names. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "chain_count": 25,
              "supported_chains": [
                "1",
                "56",
                "137",
                "42161",
                "8453",
                "10"
              ]
            }
          }
        },
        "tags": [
          "defi",
          "security",
          "bridge",
          "tvl",
          "rugpull"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "defi",
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://defi.hugen.tokyo/defi/dex/volume",
      "mimeType": "application/json",
      "description": "DEX trading volume analytics — total market 24h volume, per-protocol rankings, and chain-level breakdowns across all major decentralized exchanges. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "protocols": [
                {
                  "name": "Uniswap",
                  "volume24h": 1800000000
                }
              ],
              "totalVolume24h": 5200000000
            }
          }
        },
        "tags": [
          "defi",
          "security",
          "bridge",
          "tvl",
          "rugpull"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "defi",
        "discoverable": true
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://defi.hugen.tokyo/defi/fees",
      "mimeType": "application/json",
      "description": "DeFi protocol fee and revenue data — daily/weekly totals, revenue breakdowns, and protocol earnings. Essential for protocol valuation. Accepts USDC payments on Base and Solana"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "protocol": "uniswap"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "name": "uniswap",
              "total7d": 24500000,
              "total24h": 3500000
            }
          }
        },
        "tags": [
          "defi",
          "security",
          "bridge",
          "tvl",
          "rugpull"
        ],
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "category": "defi",
        "discoverable": true
      }
    },
    "x402Version": 2
  }
]

UPTIME

07-20 · uptime 100.0% · 354ms avg07-21 · uptime 100.0% · 357ms avg07-2007-21
RESPONSE TIME
07-20 · 354ms avg07-20 · 354ms avg07-21 · 357ms avg07-21 · 357ms avg07-2007-21
7d UPTIME 100%
UPTIME 7D 100%
AVG RESP 355ms
TOTAL CHECKS 63

RECENT CHECKS

TIME STATUS RESP
● OK 279ms
● OK 307ms
● OK 482ms
● OK 256ms
● OK 265ms
● OK 310ms
● OK 278ms
● OK 249ms
● OK 317ms
● OK 284ms
● OK 339ms
● OK 276ms
● OK 258ms
● OK 250ms
● OK 261ms
● OK 265ms
● OK 416ms
● OK 259ms
18 of 63 checks

OVER TIME

All charts share the 7d window selected here. Every series is also served as JSON at /api/v1/services/hugen-defi-intelligence-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted).

PRICE (captured 402, USD)
07-20 · $0.0107-21 · $0.01$0.0107-2007-21

Median across 6 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
07-20 compliance: 100% checks07-21 uptime: 100.0% compliance: 100% checksuptimecompliance07-2007-21
VOLUME (on-chain settlement, USD)
07-14 · $107-15 · $207-16 · $207-17 · $207-18 · $207-19 · $207-20 · $207-21 · $0.94peak $207-1407-21

Shared payout address (9 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 10 services sharing it: a declared convention, not an individually observed measure.

DISTINCT BUYERS
07-14 · 19 buyers07-15 · 34 buyers07-16 · 24 buyers07-17 · 26 buyers07-18 · 19 buyers07-19 · 23 buyers07-20 · 15 buyers07-21 · 16 buyerspeak 34 buyers07-1407-21

Shared payout address (9 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service buyer count is attributed, the assessment block and the ranking, it is divided pro-quota by the 10 services sharing the address and can be fractional: a declared convention, not an individually observed measure.

COMPLIANCE

11/11 checks pass · grade A
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS

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