Build against the EthIntel REST API without guessing what any endpoint returns.

{
  "txHash": "0x8f3d0f63b3a948321f1b2291e5a8dd3c3df5cc9fd0c8ff9d132d91b2c1e9bc45",
  "chain": "ethereum",
  "level": "standard",
  "status": "success",
  "classification": {
    "category": "swap",
    "protocol": "Uniswap V3",
    "action": "Swap ETH for USDC"
  },
  "summary": {
    "headline": "Swapped 1.2 ETH for 3,861.44 USDC.",
    "detail": "The signer sent 1.2 ETH into the Uniswap V3 router, which wrapped the asset into WETH and traded it for 3,861.44 USDC. The trade completed normally, paid 0.0080 ETH in gas, and returned the USDC to the originating wallet."
  },
  "assets": {
    "sent": [
      {
        "symbol": "ETH",
        "amount": "1.2",
        "destination": "Uniswap V3 Router"
      }
    ],
    "received": [
      {
        "symbol": "USDC",
        "amount": "3861.44",
        "source": "Uniswap V3 Pool"
      }
    ]
  },
  "gas": {
    "used": "192843",
    "totalFeeEth": "0.008021",
    "totalFeeUsd": 27.01
  },
  "risk": {
    "score": 21,
    "level": "low",
    "signals": [
      {
        "severity": "info",
        "code": "KNOWN_PROTOCOL",
        "message": "The primary contract is a labeled Uniswap V3 router."
      },
      {
        "severity": "info",
        "code": "STANDARD_SWAP_FLOW",
        "message": "The transaction flow matches a common single-hop swap path."
      }
    ]
  },
  "requestId": "req_01JTV2QG6M3R1S1A",
  "cached": true
}

{
  "event": "decoded",
  "data": {
    "stage": "decode",
    "progress": 42,
    "message": "Decoded calldata and mapped the router call.",
    "payload": {
      "function": "exactInputSingle",
      "protocol": "Uniswap V3"
    }
  }
}

{
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "chain": "ethereum",
  "ens": "vitalik.eth",
  "label": "Vitalik Buterin",
  "category": "individual",
  "balancesUsd": 2528613.68,
  "activity30d": {
    "txCount": 31,
    "activeDays": 11,
    "lastTxHash": "0x29f1a5c4f612329c38ef2d3b67bc912f84f6f458f9ae34ef6dcd8e01b7145bb8"
  },
  "topInteractions": [
    {
      "address": "0xE592427A0AEce92De3Edee1F18E0157C05861564",
      "label": "Uniswap V3 Router",
      "count": 7
    }
  ],
  "tags": [
    "public-figure",
    "dao-participant",
    "contract-deployer"
  ],
  "risk": {
    "score": 11,
    "level": "low",
    "signals": [
      {
        "severity": "info",
        "code": "KNOWN_ENTITY",
        "message": "This address matches a known public identity."
      }
    ]
  }
}

{
  "event": "risk",
  "data": {
    "stage": "risk",
    "progress": 76,
    "message": "Risk and labeling analysis completed.",
    "payload": {
      "score": 11,
      "level": "low"
    }
  }
}

{
  "verdict": "warn",
  "summary": "This approval grants unlimited USDC spend to an unlabeled contract.",
  "simulation": {
    "success": true,
    "nativeDiffEth": "0",
    "gasEstimate": "68421",
    "assetChanges": [],
    "approvals": [
      {
        "token": "USDC",
        "spender": "0x4F5fB3cA6dE8E5F39bC4174d5Dd5C0F5F135F4A1",
        "allowance": "unlimited"
      }
    ]
  },
  "risk": {
    "score": 72,
    "level": "high",
    "signals": [
      {
        "severity": "critical",
        "code": "UNLIMITED_APPROVAL_UNKNOWN_SPENDER",
        "message": "The spender receives an unlimited approval and is not confidently labeled."
      }
    ]
  },
  "recommendations": [
    "Verify the spender contract independently before signing.",
    "Prefer a bounded allowance instead of an unlimited approval."
  ]
}

{
  "query": "vitalik.eth",
  "normalized": "vitalik.eth",
  "type": "ens",
  "chain": "ethereum",
  "result": {
    "id": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
    "label": "Vitalik Buterin",
    "href": "/api/address/vitalik.eth"
  },
  "suggestions": [
    {
      "type": "address",
      "label": "Resolve as a wallet profile"
    }
  ]
}

{
  "address": "0x4F5fB3cA6dE8E5F39bC4174d5Dd5C0F5F135F4A1",
  "score": 87,
  "level": "high",
  "category": "unknown",
  "lastUpdated": "2026-03-14T19:32:04Z",
  "signals": [
    {
      "severity": "critical",
      "code": "UNLABELED_APPROVAL_TARGET",
      "message": "This address commonly appears as an unlabeled approval spender."
    },
    {
      "severity": "warning",
      "code": "RECENT_COMPLAINT_CLUSTER",
      "message": "User complaints referencing this address increased in the last 7 days."
    }
  ]
}

{
  "validatorIndex": 204321,
  "pubkey": "0x8cdd9d3cb8f1c7f1d4784d1cfd019ba9226c0b7617daef0dca7c41e9e28f7030",
  "status": "active_ongoing",
  "activationEpoch": 174322,
  "withdrawalAddress": "0x91bB2aBC4459d1F21f5c8A7cA2B22A2aF1B0e5D1",
  "effectiveBalanceEth": 32,
  "uptime30d": 99.63,
  "apr": 3.74,
  "mevRelay": "ultrasound",
  "slashed": false
}

{
  "validatorIndex": 204321,
  "currency": "ETH",
  "rows": [
    {
      "epoch": 248300,
      "proposer": 0,
      "attestation": 0.00318,
      "sync": 0,
      "total": 0.00318
    },
    {
      "epoch": 248301,
      "proposer": 0,
      "attestation": 0.00321,
      "sync": 0,
      "total": 0.00321
    },
    {
      "epoch": 248302,
      "proposer": 0,
      "attestation": 0.00342,
      "sync": 0,
      "total": 0.00342
    }
  ],
  "total30d": 0.9124
}

{
  "validatorIndex": 204321,
  "score": 91,
  "grade": "A",
  "breakdown": {
    "performance": 93,
    "reliability": 95,
    "decentralization": 78,
    "taxReadiness": 98
  },
  "reasons": [
    "Strong attestation performance over the last 30 days.",
    "No missed sync committee duties in the recent window."
  ]
}

validator_index,epoch,reward_type,amount_eth,amount_usd
204321,248300,attestation,0.00318,10.74
204321,248301,attestation,0.00321,10.85
204321,248302,attestation,0.00342,11.56

{
  "validatorIndex": 204321,
  "window": {
    "fromEpoch": 248300,
    "toEpoch": 248304
  },
  "duties": [
    {
      "epoch": 248300,
      "slot": 7945632,
      "type": "attester",
      "status": "completed"
    },
    {
      "epoch": 248302,
      "slot": 7945696,
      "type": "proposer",
      "status": "scheduled"
    }
  ]
}

{
  "address": "0x91bB2aBC4459d1F21f5c8A7cA2B22A2aF1B0e5D1",
  "validators": [
    {
      "validatorIndex": 204321,
      "status": "active_ongoing",
      "balanceEth": 32.4821,
      "withdrawalCredentialsType": "0x01"
    },
    {
      "validatorIndex": 204322,
      "status": "active_ongoing",
      "balanceEth": 32.4818,
      "withdrawalCredentialsType": "0x01"
    }
  ]
}

{
  "chain": "ethereum",
  "currentSlot": 7945740,
  "currentEpoch": 248304,
  "finalizedEpoch": 248302,
  "activeValidators": 1123048,
  "pendingValidators": 11892,
  "totalStakedEth": 35980412,
  "participationRate": 0.996,
  "slashings30d": 4
}

{
  "chain": "ethereum",
  "items": [
    {
      "validatorIndex": 182441,
      "epoch": 248291,
      "reason": "Proposer equivocation",
      "penaltyEth": 0.5124,
      "whistleblower": null
    },
    {
      "validatorIndex": 190112,
      "epoch": 248295,
      "reason": "Attester slashable vote",
      "penaltyEth": 0.4869,
      "whistleblower": null
    }
  ]
}

{
  "status": "ok",
  "version": "2026.03.14",
  "checks": {
    "rpc": {
      "status": "ok",
      "latencyMs": 121
    },
    "redis": {
      "status": "ok",
      "latencyMs": 7
    },
    "ai": {
      "status": "ok",
      "latencyMs": 912
    },
    "beacon": {
      "status": "ok",
      "latencyMs": 42
    }
  },
  "timestamp": "2026-03-14T20:06:11Z"
}

{
  "totalLabels": 418762,
  "totalAddresses": 305441,
  "totalProtocols": 1874,
  "sources": [
    {
      "name": "ethintel-core",
      "labels": 221843,
      "lastUpdated": "2026-03-14T03:00:00Z"
    },
    {
      "name": "community-curated",
      "labels": 104332,
      "lastUpdated": "2026-03-13T23:41:00Z"
    },
    {
      "name": "protocol-manifests",
      "labels": 92587,
      "lastUpdated": "2026-03-14T01:12:00Z"
    }
  ],
  "lastUpdated": "2026-03-14T03:00:00Z"
}

{
  "openapi": "3.1.0",
  "info": {
    "title": "EthIntel REST API",
    "version": "2026-03-14",
    "description": "Hardcoded documentation sample for the EthIntel REST API."
  },
  "servers": [
    {
      "url": "https://ethintel.io",
      "description": "Production"
    }
  ],
  "paths": {
    "/api/explain/{txHash}": {
      "get": {
        "summary": "Explain a transaction"
      }
    }
  },
  "components": {
    "schemas": {
      "TransactionExplanation": {
        "type": "object"
      }
    }
  }
}

{
  "ok": true,
  "accepted": true,
  "action": "queued_explain_request",
  "requestId": "req_01JTV2T0YF5E7YZZ"
}