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mirrored listing x402 eip155:8453

Verify a package: does it exist, is it deprecated or yanked, and does it have known vulner

Verify a package: does it exist, is it deprecated or yanked, and does it have known vulnerabilities? Checked against the npm/PyPI/crates.io registry plus OSV.dev advisories.

Do you run goodsong.dev? This listing was mirrored from Coinbase's public Bazaar. Claim it in 30 seconds — no account required — and it becomes verified, permanently overriding the mirrored copy.

Claim this listing
5000 (raw units)
price
6
calls / 30d
1
unique payers
2026-09-04
updated

Provider

goodsong.dev · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xf3b36a95913eb2676fcdedb2ba6b0c96ade58de1",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "ecosystem": "npm",
          "name": "chalk",
          "version": "5.3.0"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "canonical": {
            "ecosystem": "npm",
            "latest_version": "5.3.0",
            "name": "chalk",
            "version": "5.3.0",
            "vulnerabilities": []
          },
          "checks": {
            "deprecated": false,
            "exists": true,
            "vulnerable": false
          },
          "cost": {
            "amount": "0.005",
            "currency": "USDC"
          },
          "evidence": [
            {
              "retrieved_at": "2026-08-30T12:00:00Z",
              "source": "npm",
              "url": "https://registry.npmjs.org/chalk"
            },
            {
              "retrieved_at": "2026-08-30T12:00:00Z",
              "source": "osv",
              "url": "https://api.osv.dev/v1/query"
            }
          ],
          "latency_ms": 210,
          "verdict": "confirmed"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "description": "Provide an ecosystem and package name; version is optional and defaults to latest.",
              "properties": {
                "ecosystem": {
                  "description": "Which package registry to check.",
                  "enum": [
                    "npm",
                    "pypi",
                    "crates"
                  ],
                  "type": "string"
                },
                "name": {
                  "description": "The package name.",
                  "type": "string"
                },
                "version": {
                  "description": "Optional specific version; defaults to latest if omitted.",
                  "type": "string"
                }
              },
              "required": [
                "ecosystem",
                "name"
              ]
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "canonical": {
                  "type": [
                    "object",
                    "null"
                  ]
                },
                "checks": {
                  "type": "object"
                },
                "cost": {
                  "type": "object"
                },
                "evidence": {
                  "type": "array"
                },
                "latency_ms": {
                  "type": "integer"
                },
                "verdict": {
                  "enum": [
                    "confirmed",
                    "contradicted",
                    "unknown"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://goodsong.dev/verify/package"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://goodsong.dev/verify/package");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://goodsong.dev/verify/package")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/7669.json, and this resource appears in /discovery/resources and /discovery/search.