Roundhouse AI

VulnFeed by Novadyne

CVE lookup

DataLiveeip155:8453Exactvia cdp
https://vulnfeed-api.novadyne.ai/vulnscan/cve/CVE-2021-44228
Calls · 30d
9↓ 2.8%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$0.35
Verified settled volume
76 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
8
Calls · 30d
Upstream's own call count for this endpoint, not ours.
7
Unique payers · 30d
Last called 2026-09-19 18:00Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xBEccE6dd106Cfa910F78fea188B2fcCEb73bdD0F

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",
        "decimals": 6
      },
      "payTo": "0xBEccE6dd106Cfa910F78fea188B2fcCEb73bdD0F",
      "amount": "2000",
      "scheme": "exact",
      "network": "eip155:8453",
      "resource": "https://vulnfeed-api.novadyne.ai/vulnscan/cve/CVE-2021-44228",
      "description": "CVE lookup",
      "maxAmountRequired": "2000",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://vulnfeed-api.novadyne.ai/vulnscan/cve/CVE-2021-44228",
    "description": "CVE lookup",
    "serviceName": "VulnFeed by Novadyne"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "cve_id": "CVE-2021-23337"
          }
        },
        "title": "Look up a single CVE / GHSA with EPSS and fix data",
        "output": {
          "type": "json",
          "example": {
            "id": "CVE-2021-23337",
            "ok": true,
            "epss": {
              "date": "2026-06-19",
              "score": 0.0094,
              "percentile": 0.83
            },
            "summary": "lodash command injection via _.template",
            "severity": [
              "HIGH (CVSS 7.2)"
            ]
          }
        },
        "description": "Resolve one vulnerability identifier (CVE or GHSA) to its full advisory: summary, affected ranges, CVSS severity, the EPSS exploit-probability score and percentile, and the fixed version. Use it to enrich a finding an agent already has, or to decide whether a single flagged dependency is worth acting on."
      },
      "schema": {
        "type": "object",
        "properties": {
          "input": {
            "type": "object",
            "properties": {
              "queryParams": {
                "type": "object",
                "required": [
                  "cve_id"
                ],
                "properties": {
                  "cve_id": {
                    "type": "string",
                    "description": "CVE or GHSA identifier, e.g. CVE-2021-23337 or GHSA-35jh-r3h4-6jhm"
                  }
                }
              }
            }
          },
          "output": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string",
                "description": "Canonical advisory ID"
              },
              "ok": {
                "type": "boolean"
              },
              "epss": {
                "type": "object",
                "description": "FIRST.org EPSS: {score: 0..1, percentile: 0..1, date}"
              },
              "summary": {
                "type": "string",
                "description": "One-line description of the flaw"
              },
              "severity": {
                "type": "array",
                "description": "CVSS vectors/ratings from the upstream advisories"
              }
            }
          }
        }
      },
      "examples": {
        "input": {
          "cve_id": "CVE-2021-23337"
        },
        "output": {
          "id": "CVE-2021-23337",
          "ok": true,
          "epss": {
            "date": "2026-06-19",
            "score": 0.0094,
            "percentile": 0.83
          },
          "summary": "lodash command injection via _.template",
          "severity": [
            "HIGH (CVSS 7.2)"
          ]
        }
      }
    }
  },
  "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.

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0xBEcc…bdD0F. The signed payment is good for 1 minute.

Paid to
0xBEcc…bdD0F
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
2000 smallest units
Buys
CVE lookup
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "decimals": 6
    },
    "payTo": "0xBEccE6dd106Cfa910F78fea188B2fcCEb73bdD0F",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "resource": "https://vulnfeed-api.novadyne.ai/vulnscan/cve/CVE-2021-44228",
    "description": "CVE lookup",
    "maxAmountRequired": "2000",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "cve_id": "CVE-2021-23337"
        }
      },
      "title": "Look up a single CVE / GHSA with EPSS and fix data",
      "output": {
        "type": "json",
        "example": {
          "id": "CVE-2021-23337",
          "ok": true,
          "epss": {
            "date": "2026-06-19",
            "score": 0.0094,
            "percentile": 0.83
          },
          "summary": "lodash command injection via _.template",
          "severity": [
            "HIGH (CVSS 7.2)"
          ]
        }
      },
      "description": "Resolve one vulnerability identifier (CVE or GHSA) to its full advisory: summary, affected ranges, CVSS severity, the EPSS exploit-probability score and percentile, and the fixed version. Use it to enrich a finding an agent already has, or to decide whether a single flagged dependency is worth acting on."
    },
    "schema": {
      "type": "object",
      "properties": {
        "input": {
          "type": "object",
          "properties": {
            "queryParams": {
              "type": "object",
              "required": [
                "cve_id"
              ],
              "properties": {
                "cve_id": {
                  "type": "string",
                  "description": "CVE or GHSA identifier, e.g. CVE-2021-23337 or GHSA-35jh-r3h4-6jhm"
                }
              }
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "id": {
              "type": "string",
              "description": "Canonical advisory ID"
            },
            "ok": {
              "type": "boolean"
            },
            "epss": {
              "type": "object",
              "description": "FIRST.org EPSS: {score: 0..1, percentile: 0..1, date}"
            },
            "summary": {
              "type": "string",
              "description": "One-line description of the flaw"
            },
            "severity": {
              "type": "array",
              "description": "CVSS vectors/ratings from the upstream advisories"
            }
          }
        }
      }
    },
    "examples": {
      "input": {
        "cve_id": "CVE-2021-23337"
      },
      "output": {
        "id": "CVE-2021-23337",
        "ok": true,
        "epss": {
          "date": "2026-06-19",
          "score": 0.0094,
          "percentile": 0.83
        },
        "summary": "lodash command injection via _.template",
        "severity": [
          "HIGH (CVSS 7.2)"
        ]
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-19 18:00Z
Last indexed by Roundhouse
2026-09-25 17:30Z
Last enriched (probe, favicon, geo)
2026-09-23 21:15Z
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. 30 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 VulnFeed by Novadyne 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=VulnFeed%20by%20Novadyne'
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://vulnfeed-api.novadyne.ai/vulnscan/cve/CVE-2021-44228, 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.