x402 List

x402 Protocol Service Directory

Hugen DeFi Intelligence API

Blockchain PAYMENT-READY imported

payment-ready until 2026-08-20

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

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.

first settlement 2026-02-20 · $195.27 all-time · settled via coinbase, dexter

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 3h 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
831ms
avg response
435ms
total checks
2,130

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 (p61 in Blockchain)
price (min)
$0.01
category percentile (min)
p61 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.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction $5.84975 30d · 424 buyers
volume 30d
$5.84975
buyers 30d
424
settlements 30d
4,989
first settlement
2026-02-20
last settlement
2026-08-13
top buyer share
69% of 30d volume
trend 7d vs 30d
0.86x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$195.27
settlements all-time
73,491
median settlement 30d
$0.01
max settlement 30d
$0.50
settled via
coinbase ($54.53, 4,940 tx), dexter ($3.03, 49 tx)

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

Currently sharing this payout address with Content Intelligence API, Domain Intelligence API, Gotobi Calendar API, Hugen Intel API, Hugen Visual API, Hugen Weather API, Scout Multi-Source Intelligence API, Tick Aggregator FX API, Whale Intelligence API.

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

WHAT IT DOES

ai-derived

Provides DeFi intelligence services including token security, phishing detection, and blockchain analytics

category
defi-intelligence
in
query params
auth
none
blockchaindefisecuritytoken-analysisphishing-detectionbridge-routing

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 402 CHANNEL
GET /defi/chains $0.01 Base/Solana USDC header
GET /defi/dex/volume $0.01 Base/Solana USDC header
GET /defi/fees $0.01 Base/Solana USDC header
GET /defi/phishing $0.01 Base/Solana USDC header
GET /defi/stablecoin/chains $0.01 Base/Solana USDC header
GET /defi/token/solana $0.01 Base/Solana USDC header
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
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. 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). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
07-20 · uptime 100.0% · 354ms avg07-21 · uptime 100.0% · 335ms avg07-22 · uptime 100.0% · 342ms avg07-23 · uptime 100.0% · 268ms avg07-24 · uptime 100.0% · 362ms avg07-25 · uptime 100.0% · 399ms avg07-26 · uptime 100.0% · 397ms avg07-27 · uptime 100.0% · 346ms avg07-28 · uptime 100.0% · 364ms avg07-29 · uptime 100.0% · 463ms avg07-30 · uptime 100.0% · 521ms avg07-31 · uptime 100.0% · 495ms avg08-01 · uptime 100.0% · 520ms avg08-02 · uptime 100.0% · 449ms avg08-03 · uptime 100.0% · 500ms avg08-04 · uptime 100.0% · 451ms avg08-05 · uptime 100.0% · 482ms avg08-06 · uptime 100.0% · 444ms avg08-07 · uptime 100.0% · 484ms avg08-08 · uptime 100.0% · 483ms avg08-09 · uptime 100.0% · 492ms avg08-10 · uptime 100.0% · 448ms avg08-11 · uptime 100.0% · 511ms avg08-12 · uptime 100.0% · 422ms avg08-13 · uptime 100.0% · 496ms avg07-2008-13
30d UPTIME 100%
RESPONSE TIME
07-20 · 354ms avg07-20 · 354ms avg07-21 · 335ms avg07-21 · 335ms avg07-22 · 342ms avg07-22 · 342ms avg07-23 · 268ms avg07-23 · 268ms avg07-24 · 362ms avg07-24 · 362ms avg07-25 · 399ms avg07-25 · 399ms avg07-26 · 397ms avg07-26 · 397ms avg07-27 · 346ms avg07-27 · 346ms avg07-28 · 364ms avg07-28 · 364ms avg07-29 · 463ms avg07-29 · 463ms avg07-30 · 521ms avg07-30 · 521ms avg07-31 · 495ms avg07-31 · 495ms avg08-01 · 520ms avg08-01 · 520ms avg08-02 · 449ms avg08-02 · 449ms avg08-03 · 500ms avg08-03 · 500ms avg08-04 · 451ms avg08-04 · 451ms avg08-05 · 482ms avg08-05 · 482ms avg08-06 · 444ms avg08-06 · 444ms avg08-07 · 484ms avg08-07 · 484ms avg08-08 · 483ms avg08-08 · 483ms avg08-09 · 492ms avg08-09 · 492ms avg08-10 · 448ms avg08-10 · 448ms avg08-11 · 511ms avg08-11 · 511ms avg08-12 · 422ms avg08-12 · 422ms avg08-13 · 496ms avg08-13 · 496ms avg07-2008-13
AVG RESP 435ms
PRICE (captured 402, USD)
07-20 · $0.0108-13 · $0.01$0.0107-2008-13

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% checks07-22 uptime: 100.0% compliance: 100% checks07-23 uptime: 100.0% compliance: 100% checks07-24 uptime: 100.0% compliance: 100% checks07-25 uptime: 100.0% compliance: 100% checks07-26 uptime: 100.0% compliance: 100% checks07-27 uptime: 100.0% compliance: 100% checks07-28 uptime: 100.0% compliance: 100% checks07-29 uptime: 100.0% compliance: 100% checks07-30 uptime: 100.0% compliance: 100% checks07-31 uptime: 100.0% compliance: 100% checks08-01 uptime: 100.0% compliance: 100% checks08-02 uptime: 100.0% compliance: 100% checks08-03 uptime: 100.0% compliance: 100% checks08-04 uptime: 100.0% compliance: 100% checks08-05 uptime: 100.0% compliance: 100% checks08-06 uptime: 100.0% compliance: 100% checks08-07 uptime: 100.0% compliance: 100% checks08-08 uptime: 100.0% compliance: 100% checks08-09 uptime: 100.0% compliance: 100% checks08-10 uptime: 100.0% compliance: 100% checks08-11 uptime: 100.0% compliance: 100% checks08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 100.0% compliance: 100% checksuptimecompliance07-2008-13

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
07-15 · $307-16 · $207-17 · $207-18 · $207-19 · $207-20 · $207-21 · $207-22 · $307-23 · $407-24 · $207-25 · $207-26 · $207-27 · $207-28 · $207-29 · $207-30 · $207-31 · $208-01 · $208-02 · $208-03 · $208-04 · $208-05 · $208-06 · $108-07 · $208-08 · $108-09 · $308-10 · $208-11 · $108-12 · $208-13 · $1peak $407-1508-13

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
07-15 · 35 buyers07-16 · 24 buyers07-17 · 27 buyers07-18 · 20 buyers07-19 · 24 buyers07-20 · 16 buyers07-21 · 28 buyers07-22 · 33 buyers07-23 · 34 buyers07-24 · 18 buyers07-25 · 28 buyers07-26 · 15 buyers07-27 · 23 buyers07-28 · 17 buyers07-29 · 32 buyers07-30 · 26 buyers07-31 · 37 buyers08-01 · 33 buyers08-02 · 19 buyers08-03 · 16 buyers08-04 · 15 buyers08-05 · 24 buyers08-06 · 11 buyers08-07 · 22 buyers08-08 · 13 buyers08-09 · 27 buyers08-10 · 23 buyers08-11 · 12 buyers08-12 · 16 buyers08-13 · 12 buyerspeak 37 buyers07-1508-13

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. Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-20 · last up 2026-08-13

  • 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
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 478ms
● SLOW 699ms
● OK 521ms
● OK 482ms
● OK 498ms
● OK 459ms
● OK 492ms
● OK 504ms
● OK 603ms
● OK 434ms
● OK 477ms
● SLOW 1118ms
● OK 318ms
● OK 484ms
● OK 542ms
● OK 373ms
● OK 377ms
● OK 445ms

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