Roundhouse

APKCube APK Signing Cert Lookup

Every Android app signed by one signing certificate: look up a SHA-256 certificate fingerprint to find all packages and publishers that key has signed. Finds repackaged apps and related malware families, since a key that signed one repackaged app has usually signed others. Keyless pay-per-call in USDC on Base or Solana: no account or API key.

Otherofflineeip155:8453Exactvia cdp
https://apkcube.com/api/v1/lookup/certificate/:fingerprint
Apk-signingCertificateAndroidThreat-intelMalware
Settlements · 30d
33
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$1.34
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-24 09:30Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xaf4ed8d6d780d15e0937e7fbe65627ed451e9c09

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.

Accepts

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

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0xaf4e…e9c09. The signed payment is good for 5 minutes.

Paid to
0xaf4e…e9c09
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
50000units
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
GXEo7n…z4Apj
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xaf4ed8d6d780d15e0937e7fbe65627ed451e9c09",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
    },
    "payTo": "GXEo7ndykiNcvZPzBJqA6rugdkhKXGrKbpx1te6z4Apj",
    "amount": "50000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {
          "fingerprint": "fb920d381bee1b2093f27dc8f13d994da629dc91887d0529b35c9a2dc4f4a6c2"
        },
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "note": "string",
          "page": 0,
          "items": [
            {
              "appName": "string",
              "trusted": false,
              "addedVia": "string",
              "firstSeenAt": "string",
              "packageName": "com.whatsapp"
            }
          ],
          "total": 0,
          "blocked": false,
          "perPage": 0,
          "subject": "string",
          "algorithm": "sha256",
          "totalPages": 0,
          "fingerprint": "39:84:2a:0f:4d:2b:8e:11:7c:93:25:6e:dc:1a:5b:f0:94:7d:c2:3e:81:6a:59:0b:fd:44:72:9e:13:c6:a8:57",
          "blockedCount": 0
        }
      }
    },
    "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"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object",
              "required": [
                "fingerprint"
              ],
              "properties": {
                "fingerprint": {
                  "type": "string",
                  "description": "SHA-256 fingerprint of the DER certificate, 64 hex characters, with or without colons."
                }
              }
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "per": {
                  "type": "integer",
                  "maximum": 96,
                  "minimum": 1,
                  "description": "Rows per page, 1–96. Defaults to 24."
                },
                "page": {
                  "type": "integer",
                  "minimum": 1,
                  "description": "1-based page. Defaults to 1."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": "/api/v1/lookup/certificate/:fingerprint"
  }
}

Provenance

Seen in the source catalog
2026-10-24 09:30Z
Last indexed by Roundhouse
2026-10-26 17:20Z
Last enriched (probe, favicon, geo)
2026-10-24 10:47Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 0
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 APKCube APK Signing Cert Lookup 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=APKCube%20APK%20Signing%20Cert%20Lookup'
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://apkcube.com/api/v1/lookup/certificate/:fingerprint, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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