Roundhouse

PrepLayer.ai

Deterministic JSON-Schema subset validator. Catches malformed JSON before it breaks a pipeline. Supports: type, required, properties, items, minLength, maxLength, pattern, enum, minimum, maximum, additionalProperties. No external dependencies.

MediaUnknowneip155:8453Exactvia cdp
https://api.maximusmediahouse.com/v1/validate_json
Text-processingDeterministicPreprocessingx402Agents
Settlements · 30d
47
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.61
Verified settled volume
47 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-25 02:43Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8cb59b1bffb39c130ab85a8177e93eae9ddbaf10

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.

0.003USDC≈ $0.003 USD
on Base · exact scheme

Pay 0.003 USDC on Base to 0x8cb5…baf10. The signed payment is good for 1 minute.

Paid to
0x8cb5…baf10
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
3000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "endpoint": "https://api.maximusmediahouse.com/v1/validate_json",
      "price_usdc": "0.003",
      "description": "Deterministic JSON-Schema subset validator. Catches malformed JSON before it breaks a pipeline. Supports: type, required, properties, items, minLength, maxLength, pattern, enum, minimum, maximum, additionalProperties. No external dependencies.",
      "requested_network": "eip155:8453",
      "supported_networks": [
        "eip155:8453",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "eip155:137",
        "eip155:42161"
      ]
    },
    "payTo": "0x8cb59b1bffb39c130ab85a8177e93eae9ddbaf10",
    "amount": "3000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "json": "{\"b\":2,\"a\":1}"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "valid": true,
          "canonical": "{\"a\":1,\"b\":2}"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "json"
              ],
              "properties": {
                "json": {
                  "type": "string",
                  "description": "The JSON string to parse and validate."
                },
                "schema": {
                  "type": "object",
                  "properties": {
                    "enum": {
                      "type": "array"
                    },
                    "type": {
                      "enum": [
                        "string",
                        "number",
                        "integer",
                        "boolean",
                        "null",
                        "array",
                        "object"
                      ],
                      "type": "string"
                    },
                    "items": {
                      "type": "object"
                    },
                    "maximum": {
                      "type": "number"
                    },
                    "minimum": {
                      "type": "number"
                    },
                    "pattern": {
                      "type": "string"
                    },
                    "required": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "maxLength": {
                      "type": "integer",
                      "minimum": 0
                    },
                    "minLength": {
                      "type": "integer",
                      "minimum": 0
                    },
                    "properties": {
                      "type": "object"
                    },
                    "additionalProperties": {
                      "type": "boolean"
                    }
                  },
                  "description": "JSON-Schema subset. Omit for parse-only validation."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-25 02:43Z
Last indexed by Roundhouse
2026-10-26 20:00Z
Last enriched (probe, favicon, geo)
—
x402 version
2
Max timeout
60s
Liveness probe
Not probed
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 PrepLayer.ai 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=PrepLayer.ai'
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://api.maximusmediahouse.com/v1/validate_json, 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.