onvexia.com

Name: onvexia.com
Price: 0.001 USDC
Availability: InStock

Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.

SocialLiveeip155:8453Exactvia cdp

https://onvexia.com/v1/topics/rank

Calls · 30d

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.

$0.07

Verified settled volume

27 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0010

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 2026-09-17 09:37Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x54F57D0FE2FFBa8C8111fc89D4a0E624D53Dd0e3

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.

{
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x54F57D0FE2FFBa8C8111fc89D4a0E624D53Dd0e3",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxAmountRequired": "1000",
      "maxTimeoutSeconds": 60
    }
  ],
  "message": "Pay per call with x402 (USDC on Base), or use a free account: FREE ACCESS IS ON until 31 December 2026 — sign up at https://onvexia.com/signup and every endpoint, including this one, costs nothing.",
  "resource": {
    "url": "https://onvexia.com/v1/topics/rank",
    "mimeType": "application/json",
    "description": "Topic ranking — Ranked social topics for a window. Returns topics + window_hours."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "window_hours": "168"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "data": [],
            "meta": {
              "docs": "https://onvexia.com/openapi.json",
              "endpoint": "/v1/topics/rank"
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "window_hours": {
                    "type": "string",
                    "description": "Look-back window, default 24"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "properties": {
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "description": "The result — an array or object depending on the endpoint. An empty array means no rows in range, never that the metric is unsupported."
                  },
                  "meta": {
                    "type": "object",
                    "description": "Coverage and provenance: what was measured, and what is not held. A null label means no label is held, never that the subject is safe."
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2,
  "documentation": "https://onvexia.com/openapi.json"
}

Accepts

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

0.001USDC≈ $0.001 USD

on Base · exact scheme

Pay 0.001 USDC on Base to 0x54F5…Dd0e3. The signed payment is good for 1 minute.

Paid to: 0x54F5…Dd0e3
USD Coin contract: 0x8335…02913
Payment window: 1 minute
As published: 1000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x54F57D0FE2FFBa8C8111fc89D4a0E624D53Dd0e3",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxAmountRequired": "1000",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "window_hours": "168"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "data": [],
          "meta": {
            "docs": "https://onvexia.com/openapi.json",
            "endpoint": "/v1/topics/rank"
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "type": "object",
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "window_hours": {
                  "type": "string",
                  "description": "Look-back window, default 24"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "properties": {
            "example": {
              "type": "object",
              "properties": {
                "data": {
                  "description": "The result — an array or object depending on the endpoint. An empty array means no rows in range, never that the metric is unsupported."
                },
                "meta": {
                  "type": "object",
                  "description": "Coverage and provenance: what was measured, and what is not held. A null label means no label is held, never that the subject is safe."
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-09-17 09:37Z
Last indexed by Roundhouse: 2026-09-24 13:00Z
Last enriched (probe, favicon, geo): 2026-09-17 12:15Z
x402 version: 2
Max timeout: 60s
Liveness probe: HTTP 402

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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far. 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 onvexia.com 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=onvexia.com'
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://onvexia.com/v1/topics/rank, 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.