Roundhouse AI

Nansen

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DataLiveeip155:8453Exactvia cdp
https://api.nansen.ai/api/v1beta1/tgm/historical-top-holders
CryptoAnalyticsSmart-moneyOn-chain
Settlements · 30d
4,671↑ 111%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$113.05
Verified settled volume
A floor: summed over 5,000 of 21,990 verified settlements.
$0.250
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-07 22:46Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x779Ded0c9e1022225f8E0630b35a9b54bE713736",
      "extra": {
        "name": "USD₮0",
        "version": "1"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:196",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xcE24439F2D9C6a2289F741120FE202248B666666",
      "extra": {
        "name": "United Stables",
        "version": "1",
        "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000000000000000",
      "scheme": "exact",
      "network": "eip155:56",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x8d0d000ee44948fc98c9b98a4fa4921476f08b0d",
      "extra": {
        "name": "World Liberty Financial USD",
        "version": "1",
        "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
        "assetTransferMethod": "eip3009"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000000000000000",
      "scheme": "exact",
      "network": "eip155:56",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x55d398326f99059fF775485246999027B3197955",
      "extra": {
        "name": "Tether USD",
        "version": "1",
        "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
        "spenderAddress": "0x3038f7ac3b4D1a3fe886BdCB5cD01e9f6BDd8633",
        "assetTransferMethod": "permit2-exact"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000000000000000",
      "scheme": "exact",
      "network": "eip155:56",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
      "extra": {
        "name": "USD Coin",
        "version": "1",
        "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
        "spenderAddress": "0x3038f7ac3b4D1a3fe886BdCB5cD01e9f6BDd8633",
        "assetTransferMethod": "permit2-exact"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000000000000000",
      "scheme": "exact",
      "network": "eip155:56",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:143",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
      },
      "payTo": "J7ZvJEspvwP1oRxQZ7mYmNmT22NTm3GWq3t7HEbvPZYx",
      "amount": "250000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.nansen.ai/api/v1beta1/tgm/historical-top-holders",
    "mimeType": "",
    "description": "Get historical \"Token God Mode\" (TGM) top holders (Beta)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "chain": "ethereum",
            "as_of_date": "2025-06-15",
            "label_type": "all_holders",
            "token_address": "0x6982508145454ce325ddbe47a25d4ec3d2311933",
            "apply_blacklist_filter": true
          },
          "type": "http",
          "method": "GET",
          "bodyType": "json"
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "chain",
                  "token_address",
                  "as_of_date"
                ],
                "properties": {
                  "chain": {
                    "type": "string",
                    "description": "Chains supported for the TGM historical endpoints (pnl-leaderboard, who-bought-s"
                  },
                  "filters": {
                    "type": "object",
                    "description": "Optional filters applied server-side"
                  },
                  "order_by": {
                    "type": "array",
                    "description": "Sort order. Defaults to token_amount DESC. Only the first element is used."
                  },
                  "as_of_date": {
                    "type": "string",
                    "description": "Historical date (YYYY-MM-DD) to compute holder balances at."
                  },
                  "label_type": {
                    "type": "string",
                    "description": "Holder label-type filter for the historical top holders endpoint."
                  },
                  "pagination": {
                    "type": "object",
                    "description": "Pagination parameters for API requests."
                  },
                  "token_address": {
                    "type": "string",
                    "description": "Token contract address"
                  },
                  "apply_blacklist_filter": {
                    "type": "boolean",
                    "description": "When True, exclude blacklisted addresses from the results. Defaults to True."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.25USDC≈ $0.25 USD
on Base · exact scheme

Pay 0.25 USDC on Base to 0x9305…0F13f. The signed payment is good for 5 minutes.

Paid to
0x9305…0F13f
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
250000 smallest units
250000units
on eip155:196 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
0x9305…0F13f
Token contract
0x779D…13736
Payment window
5 minutes
250000000000000000units
on eip155:56 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
0x9305…0F13f
Token contract
0xcE24…66666
Payment window
5 minutes
250000000000000000units
on eip155:56 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
0x9305…0F13f
Token contract
0x8d0d…08b0d
Payment window
5 minutes
250000000000000000units
on eip155:56 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
0x9305…0F13f
Token contract
0x55d3…97955
Payment window
5 minutes
250000000000000000units
on eip155:56 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
0x9305…0F13f
Token contract
0x8AC7…d580d
Payment window
5 minutes
250000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
J7ZvJE…vPZYx
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "amount": "250000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x779Ded0c9e1022225f8E0630b35a9b54bE713736",
    "extra": {
      "name": "USD₮0",
      "version": "1"
    },
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "amount": "250000",
    "scheme": "exact",
    "network": "eip155:196",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0xcE24439F2D9C6a2289F741120FE202248B666666",
    "extra": {
      "name": "United Stables",
      "version": "1",
      "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "amount": "250000000000000000",
    "scheme": "exact",
    "network": "eip155:56",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x8d0d000ee44948fc98c9b98a4fa4921476f08b0d",
    "extra": {
      "name": "World Liberty Financial USD",
      "version": "1",
      "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "amount": "250000000000000000",
    "scheme": "exact",
    "network": "eip155:56",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x55d398326f99059fF775485246999027B3197955",
    "extra": {
      "name": "Tether USD",
      "version": "1",
      "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
      "spenderAddress": "0x3038f7ac3b4D1a3fe886BdCB5cD01e9f6BDd8633",
      "assetTransferMethod": "permit2-exact"
    },
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "amount": "250000000000000000",
    "scheme": "exact",
    "network": "eip155:56",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
    "extra": {
      "name": "USD Coin",
      "version": "1",
      "signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
      "spenderAddress": "0x3038f7ac3b4D1a3fe886BdCB5cD01e9f6BDd8633",
      "assetTransferMethod": "permit2-exact"
    },
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "amount": "250000000000000000",
    "scheme": "exact",
    "network": "eip155:56",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
    },
    "payTo": "J7ZvJEspvwP1oRxQZ7mYmNmT22NTm3GWq3t7HEbvPZYx",
    "amount": "250000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "chain": "ethereum",
          "as_of_date": "2025-06-15",
          "label_type": "all_holders",
          "token_address": "0x6982508145454ce325ddbe47a25d4ec3d2311933",
          "apply_blacklist_filter": true
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "chain",
                "token_address",
                "as_of_date"
              ],
              "properties": {
                "chain": {
                  "type": "string",
                  "description": "Chains supported for the TGM historical endpoints (pnl-leaderboard, who-bought-s"
                },
                "filters": {
                  "type": "object",
                  "description": "Optional filters applied server-side"
                },
                "order_by": {
                  "type": "array",
                  "description": "Sort order. Defaults to token_amount DESC. Only the first element is used."
                },
                "as_of_date": {
                  "type": "string",
                  "description": "Historical date (YYYY-MM-DD) to compute holder balances at."
                },
                "label_type": {
                  "type": "string",
                  "description": "Holder label-type filter for the historical top holders endpoint."
                },
                "pagination": {
                  "type": "object",
                  "description": "Pagination parameters for API requests."
                },
                "token_address": {
                  "type": "string",
                  "description": "Token contract address"
                },
                "apply_blacklist_filter": {
                  "type": "boolean",
                  "description": "When True, exclude blacklisted addresses from the results. Defaults to True."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-07 22:46Z
Last indexed by Roundhouse
2026-08-08 05:20Z
Last enriched (probe, favicon, geo)
2026-09-10 10:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 429
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service Nansen and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Nansen'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.nansen.ai/api/v1beta1/tgm/historical-top-holders, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.