Roundhouse

Tiered payment receipt (tier 3)

Tiered payment receipt (tier 3): pay once with x402 and get back a short-lived receipt token that /pay/verify checks for you. The tier is fixed by the path - you do not send it. Optional ?ref= carries your own opaque reference, such as a query hash, straight through to the receipt. This mints a receipt rather than returning data, so there is no lookup that can come back empty.

DataLiveeip155:8453Exactvia cdp
https://aeml-x402.zeabur.app/pay/tier3
PayTier3
Calls · 30d
12↓ 4.5%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 snapshots so far.
$741.73
Verified settled volume
3,230 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
Listed price
As published in the catalog. Always read the live 402 before paying.
12
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-08-16 12:51Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3

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": "X-PAYMENT header is required",
  "rails": {
    "available": [
      "base",
      "solana"
    ],
    "advertised": [
      "base"
    ],
    "optin_hint": "Send \"X-Payment-Network: solana\" (or ?rails=all) to receive every available rail in accepts.",
    "optin_header": "X-Payment-Network",
    "also_advertised_as": {
      "note": "This same 402 is offered twice: the v1 challenge in this body, and a v2 challenge in the PAYMENT-REQUIRED header. They are the SAME offer - identical price, asset and payTo - not two competing ones. Pay with whichever version your client speaks; you do not need both.",
      "rails": "The v2 challenge lists the Solana rail without an opt-in, while this v1 body does not. That is deliberate, not a discrepancy: a v1 network:\"solana\" entry makes some v1 clients reject the WHOLE accepts array, so v1 advertises it only on request. A v2 client matches on solana:5eykt4Us... and is unaffected.",
      "header": "PAYMENT-REQUIRED",
      "naming": "The v2 challenge uses CAIP-2 network ids (eip155:8453, solana:5eykt4Us...) where this v1 body uses the legacy short names (base, solana). Same chains, different identifier scheme - CDP couples the naming to the version, so it cannot be mixed.",
      "encoding": "base64 JSON",
      "x402_version": 2
    }
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x2d16a243ba9fAcC6AC85519d5efad2149DC4C6c3",
      "amount": "100000",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://aeml-x402.zeabur.app/pay/tier3",
      "extensions": {
        "bazaar": {
          "info": {
            "input": {
              "type": "http",
              "method": "GET",
              "queryParams": {
                "ref": "optional - opaque reference such as a query hash",
                "tier": "optional - ignored; fixed to 3 by this path"
              }
            },
            "output": {
              "type": "json"
            }
          },
          "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "properties": {
              "input": {
                "type": "object",
                "required": [
                  "type",
                  "method"
                ],
                "properties": {
                  "type": {
                    "const": "http"
                  },
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  },
                  "queryParams": {
                    "type": "object",
                    "properties": {
                      "ref": {
                        "type": "string",
                        "description": "optional - opaque reference such as a query hash"
                      },
                      "tier": {
                        "type": "string",
                        "description": "optional - ignored; fixed to 3 by this path"
                      }
                    },
                    "additionalProperties": false
                  }
                }
              },
              "output": {
                "type": "object",
                "required": [
                  "type"
                ],
                "properties": {
                  "type": {
                    "const": "json"
                  }
                }
              }
            }
          },
          "priceUsd": "$0.10",
          "discoverable": true,
          "outputSchema": {
            "type": "object",
            "properties": {
              "ok": {
                "type": "boolean"
              },
              "exp": {
                "type": "integer"
              },
              "ref": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "tier": {
                "type": "integer"
              },
              "receipt": {
                "type": "string"
              },
              "paid_via": {
                "type": "string"
              }
            }
          },
          "routeTemplate": "/pay/tier3",
          "priceUsdNumber": 0.1
        }
      },
      "description": "Tiered payment receipt (tier 3): pay once with x402 and get back a short-lived receipt token that /pay/verify checks for you. The tier is fixed by the path - you do not send it. Optional ?ref= carries your own opaque reference, such as a query hash, straight through to the receipt. This mints a receipt rather than returning data, so there is no lookup that can come back empty. $0.10 per call.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "required": [],
          "properties": {
            "ref": {
              "type": "string",
              "description": "optional - opaque reference such as a query hash"
            },
            "tier": {
              "type": "string",
              "description": "optional - ignored; fixed to 3 by this path"
            }
          },
          "queryParams": {
            "ref": "optional - opaque reference such as a query hash",
            "tier": "optional - ignored; fixed to 3 by this path"
          },
          "discoverable": true
        },
        "output": {
          "type": "object",
          "properties": {
            "ok": {
              "type": "boolean"
            },
            "exp": {
              "type": "integer"
            },
            "ref": {
              "type": [
                "string",
                "null"
              ]
            },
            "tier": {
              "type": "integer"
            },
            "receipt": {
              "type": "string"
            },
            "paid_via": {
              "type": "string"
            }
          }
        }
      },
      "maxAmountRequired": "100000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Accepts

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

0.1USDC≈ $0.1 USD
on Base · exact scheme

Pay 0.1 USDC on Base to 0x2d16…4c6c3. The signed payment is good for 30 seconds.

Paid to
0x2d16…4c6c3
USD Coin contract
0x8335…02913
Payment window
30 seconds
As published
100000 smallest units
100000units
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
8qEn3Y…QAY3n
Token contract
EPjFWd…TDt1v
Payment window
30 seconds
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 30
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
    },
    "payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
    "amount": "100000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 30
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "ref": "optional - opaque reference such as a query hash",
          "tier": "optional - ignored; fixed to 3 by this path"
        }
      },
      "output": {
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "ref": {
                  "type": "string",
                  "description": "optional - opaque reference such as a query hash"
                },
                "tier": {
                  "type": "string",
                  "description": "optional - ignored; fixed to 3 by this path"
                }
              },
              "additionalProperties": false
            }
          }
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "const": "json"
            }
          }
        }
      }
    },
    "routeTemplate": "/pay/tier3",
    "outputSchemaRef": "/manifest"
  }
}

Provenance

Seen in the source catalog
2026-08-16 12:51Z
Last indexed by Roundhouse
2026-09-15 12:20Z
Last enriched (probe, favicon, geo)
2026-09-12 20:15Z
x402 version
2
Max timeout
30s
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. 23 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 Tiered payment receipt (tier 3) 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=Tiered%20payment%20receipt%20(tier%203)'
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://aeml-x402.zeabur.app/pay/tier3, 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.