Roundhouse

USDC Payment Verifier

Verify a USDC payment on Base: tx succeeded, USDC sent to the expected recipient (and from the expected sender), at least min_amount, enough confirmations. Returns verdict + decoded transfers. Unknown tx = not charged.

InfraLiveeip155:8453Exactvia facilitator:payAI
https://gogeta2-u35175.vm.elestio.app/agents/v1/payments/usdc-verify
UsdcPayment-verificationBasex402Agent-payments
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$1.86
Verified settled volume
94 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.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xe414aD5c7542CE63D890526f0e2133ff8da6F22D

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.

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0xe414…6F22D. The signed payment is good for 5 minutes.

Paid to
0xe414…6F22D
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
2000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xe414aD5c7542CE63D890526f0e2133ff8da6F22D",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "to": "0x17cd53c04d707ef0dd615ef56c633f02915a7905",
          "tx_hash": "0x4699c8e64627e085a11b8bdd1097f576e1363c1e11731005d1eb0c296df93d80",
          "min_amount": 0.05
        }
      },
      "output": {
        "type": "json",
        "example": {
          "data": {
            "chain": "base",
            "valid": true,
            "checks": {
              "amount_ok": true,
              "tx_succeeded": true,
              "sender_matches": null,
              "confirmations_ok": true,
              "recipient_matches": true,
              "usdc_transfer_found": true
            },
            "tx_hash": "0x4699c8e64627e085a11b8bdd1097f576e1363c1e11731005d1eb0c296df93d80",
            "verdict": "valid",
            "chain_id": 8453,
            "transfers": [
              {}
            ],
            "tx_sender": "0x64cc42b1ce598e3abcfbb64df4688521ddbf1f0a",
            "block_time": "2026-10-23T08:06:41Z",
            "min_amount": 0.05,
            "block_number": 52976727,
            "confirmations": 3510,
            "matched_amount": 0.05,
            "settlement_method": "transferWithAuthorization (EIP-3009, x402-style)"
          },
          "service": "verify_usdc_payment"
        }
      }
    },
    "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"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "tx_hash"
              ],
              "properties": {
                "to": {
                  "type": "string",
                  "description": "Expected recipient address (0x...)"
                },
                "from": {
                  "type": "string",
                  "description": "Expected payer address (optional)"
                },
                "chain": {
                  "enum": [
                    "base",
                    "base-sepolia"
                  ],
                  "type": "string",
                  "default": "base",
                  "description": "base (default) or base-sepolia"
                },
                "tx_hash": {
                  "type": "string",
                  "description": "Transaction hash, 0x + 64 hex"
                },
                "min_amount": {
                  "type": "number",
                  "minimum": 0,
                  "description": "Minimum USDC amount expected, e.g. 0.05"
                },
                "min_confirmations": {
                  "type": "integer",
                  "default": 1,
                  "maximum": 10000,
                  "minimum": 1,
                  "description": "Required confirmations (default 1)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-24 06:05Z
Last indexed by Roundhouse
2026-10-26 13:16Z
Last enriched (probe, favicon, geo)
2026-10-24 08:45Z
x402 version
2
Max timeout
300s
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. 4 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 USDC Payment Verifier 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=USDC%20Payment%20Verifier'
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://gogeta2-u35175.vm.elestio.app/agents/v1/payments/usdc-verify, 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.