Surplus Intelligence

Name: Surplus Intelligence
Price: 0.0128 USDC
Availability: InStock

X/Twitter API v2 via Surplus Intelligence: Single user lookup (1 unit)

OtherLiveeip155:8453Exactvia cdp

https://www.surplusintelligence.ai/x402/api/twitter/v2/users/:userId

TwitterXApix402Base

Settlements · 30d

3,282

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$1,210.87

Verified settled volume

2,908 settlements proven x402 by their on-chain EIP-3009 marker.

$0.013

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-06-18 04:54Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x8581784D3E598cCa3482375CFF2409Ac9DD8c402

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.

{
  "x402": {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "payTo": "0x8581784D3E598cCa3482375CFF2409Ac9DD8c402",
    "amount": "12800",
    "network": "base",
    "version": 2,
    "currency": "USDC",
    "facilitator": "https://api.cdp.coinbase.com/platform/v2/x402",
    "sellerCostUsd": "0.009800",
    "upstreamCostUsd": "0.010000",
    "estimatedCostUsd": "0.012800",
    "pricingMultiplier": 0.98
  },
  "error": {
    "code": "x402_payment_required",
    "type": "payment_required",
    "message": "Payment required"
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x8581784D3E598cCa3482375CFF2409Ac9DD8c402",
      "amount": "12800",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "facilitatorAddress": "0xa32cCda98ba7529705a059Bd2d213Da8de10d101"
      },
      "payTo": "0x8581784D3E598cCa3482375CFF2409Ac9DD8c402",
      "amount": "12800",
      "scheme": "upto",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://www.surplusintelligence.ai/x402/api/twitter/v2/users/:userId",
    "tags": [
      "twitter",
      "x",
      "api",
      "x402",
      "base"
    ],
    "iconUrl": "https://www.surplusintelligence.ai/icon.png",
    "mimeType": "application/json",
    "description": "X/Twitter API v2 via Surplus Intelligence: Single user lookup (1 unit)",
    "serviceName": "Surplus Intelligence"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "pathParams": {
            "userId": ":userId"
          },
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "data": {
              "id": "783214",
              "name": "X",
              "username": "X"
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "pathParams": {
                "type": "object",
                "required": [
                  "userId"
                ],
                "properties": {
                  "userId": {
                    "type": "string",
                    "description": "Numeric X/Twitter user ID."
                  }
                },
                "additionalProperties": false
              },
              "queryParams": {
                "type": "object",
                "properties": {},
                "additionalProperties": false
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {},
                  "meta": {
                    "type": "object"
                  },
                  "errors": {
                    "type": "array"
                  }
                },
                "additionalProperties": true
              }
            }
          }
        }
      },
      "routeTemplate": "/x402/api/twitter/v2/users/:userId"
    }
  },
  "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.

0.0128USDC≈ $0.0128 USD

on Base · exact scheme

Pay 0.0128 USDC on Base to 0x8581…8c402. The signed payment is good for 2 minutes.

Paid to: 0x8581…8c402
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 12800 smallest units

0.0128USDC≈ $0.0128 USD

on Base · upto scheme

Pay 0.0128 USDC on Base to 0x8581…8c402. The signed payment is good for 2 minutes.

Paid to: 0x8581…8c402
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 12800 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x8581784D3E598cCa3482375CFF2409Ac9DD8c402",
    "amount": "12800",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "facilitatorAddress": "0xB87E1A2cc2B4643F2892768e80e41167F17C5860"
    },
    "payTo": "0x8581784D3E598cCa3482375CFF2409Ac9DD8c402",
    "amount": "12800",
    "scheme": "upto",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {
          "userId": "44196397"
        },
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "data": {
            "id": "783214",
            "name": "X",
            "username": "X"
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object",
              "required": [
                "userId"
              ],
              "properties": {
                "userId": {
                  "type": "string",
                  "description": "Numeric X/Twitter user ID."
                }
              },
              "additionalProperties": false
            },
            "queryParams": {
              "type": "object",
              "properties": {},
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "data": {},
                "meta": {
                  "type": "object"
                },
                "errors": {
                  "type": "array"
                }
              },
              "additionalProperties": true
            }
          }
        }
      }
    },
    "routeTemplate": "/x402/api/twitter/v2/users/:userId"
  }
}

Provenance

Seen in the source catalog: 2026-06-18 04:54Z
Last indexed by Roundhouse: 2026-07-16 20:50Z
Last enriched (probe, favicon, geo): 2026-09-14 08:15Z
x402 version: 2
Max timeout: 120s
Liveness probe: HTTP 404

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 Surplus Intelligence 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=Surplus%20Intelligence'
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://www.surplusintelligence.ai/x402/api/twitter/v2/users/:userId, 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.