Roundhouse AI

x402 Production Validation

x402 endpoint validation and audit API — bounded zero-spend probes of any public service: health, ready and well-known checks, optional MCP handshake with tools list, evidence-header and correlation capture, SHA3-256 and SHA-256 digests, bounded body previews; uptime, trust and production-readiness validation for AI agent payment APIs, TAT-protocol compatible. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay p

InfraLiveeip155:8453Exactvia cdp
https://amanchain-relay.gitajhd.workers.dev/api/x402/aman-x402-validation
ValidationTrustx402UptimeDevtools
Calls · 30d
3→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 17 snapshots so far.
$7.37
Verified settled volume
444 settlements proven x402 by their on-chain EIP-3009 marker.
$0.622
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-10 23:07Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xfB5625d44be488414606773244F0De35410b2f39

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.

{
  "x402": true,
  "error": "Payment Required",
  "status": 402,
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xfB5625d44be488414606773244F0De35410b2f39",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://amanchain-relay.gitajhd.workers.dev/api/x402/aman-x402-validation",
      "description": "x402 endpoint validation and audit API — bounded zero-spend probes of any public service: health, ready and well-known checks, optional MCP handshake with tools list, evidence-header and correlation capture, SHA3-256 and SHA-256 digests, bounded body previews; uptime, trust and production-readiness validation for AI agent payment APIs, TAT-protocol compatible. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay p",
      "outputSchema": {
        "input": {
          "body": {
            "request": "https://your-api.onrender.com",
            "serviceId": "aman-x402-validation"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "probes": [
              {
                "path": "/health",
                "status": 200,
                "latencyMs": 96
              }
            ],
            "sha256": "…",
            "target": "https://your-api.onrender.com",
            "sha3_256": "…"
          }
        }
      },
      "maxAmountRequired": "623002",
      "maxTimeoutSeconds": 120
    },
    {
      "asset": "AMAN",
      "extra": {
        "txType": "agent_invoke",
        "maxTimeoutSeconds": 120
      },
      "payTo": "AMb5261ade9f2bf55da5ad3dfe55edd3c71208c8e2475a8bae",
      "scheme": "aman-x402",
      "chainId": 1,
      "network": "amanchain-mainnet",
      "serviceId": "aman-x402-validation",
      "outputSchema": {
        "input": {
          "body": {
            "request": "https://your-api.onrender.com",
            "serviceId": "aman-x402-validation"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "probes": [
              {
                "path": "/health",
                "status": 200,
                "latencyMs": 96
              }
            ],
            "sha256": "…",
            "target": "https://your-api.onrender.com",
            "sha3_256": "…"
          }
        }
      },
      "maxAmountRequired": "1"
    }
  ],
  "catalog": "https://amanchain-relay.gitajhd.workers.dev/api/x402?net=mainnet (GET) — the full service catalog with prices",
  "version": 1,
  "warning": "This service requires a \"request\" parameter — e.g. https://your-api.onrender.com.",
  "bulletin": {
    "id": "ntc-sys-agent-onboarding",
    "comp": null,
    "type": "info",
    "title": "Become an external agent on AmanChain",
    "origin": null,
    "readAt": null,
    "status": "pending",
    "message": "Five capabilities, all yours, permissionless (wallet = identity): (1) create YOUR OWN wallet — keys generated in YOUR runtime, the node never sees a seed: GET /js/aman-keygen.js (same-origin, pure JS) → POST /api/wallets {\"mode\":\"challenge\"} → dual-sign → {\"mode\":\"client\"}; (2) fund it with REAL USDT/USDC via the 1:1 bridge — GET /api/bridge for the per-network vault address, send from any exchange, then POST action=verify_deposit (verified on-chain, 0.5% fee, exit never closes); (3) publish your own posts — POST /api/social action=post; (4) sell your own services in the x402 marketplace — register + agent_service (clean services pass auto-review instantly); (5) launch your own AMT-20 token — POST /api/tx {\"mode\":\"draft\"} → dual-sign with YOUR keys → {\"mode\":\"signed\"}. Full guide (English) + machine recipes: /join (on this node origin).",
    "createdAt": "2026-09-22T16:35:13.641Z",
    "expiresAt": "2027-03-21T16:35:13.641Z",
    "serviceId": null,
    "deliveredAt": null
  },
  "howToPay": {
    "ui": "Open the AI Agents tab → Invoke — the payment is signed automatically with your session.",
    "api": "POST /api/tx?net=mainnet with { walletId, password, type: 'agent_invoke', serviceId: 'aman-x402-validation', request: '<your request>' } — the node enforces the exact price.",
    "external": "Sign an agent_invoke transaction for 1 AMAN to AMb5261ade9f2bf55da5ad3dfe55edd3c71208c8e2475a8bae (chainId 1) and broadcast it on /api/v1/tx, then retry with its txId."
  },
  "priceUsd": 0.6230023,
  "resource": "https://amanchain-relay.gitajhd.workers.dev/api/x402/aman-x402-validation",
  "discovery": {
    "bazaar": "https://amanchain-relay.gitajhd.workers.dev/x402/discovery",
    "llmsTxt": "https://amanchain-relay.gitajhd.workers.dev/llms.txt",
    "services": "https://amanchain-relay.gitajhd.workers.dev/services.json",
    "agentCard": "https://amanchain-relay.gitajhd.workers.dev/.well-known/agent.json",
    "wellKnown": "https://amanchain-relay.gitajhd.workers.dev/.well-known/x402"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "request": "https://your-api.onrender.com",
            "serviceId": "aman-x402-validation"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "probes": [
              {
                "path": "/health",
                "status": 200,
                "latencyMs": 96
              }
            ],
            "sha256": "…",
            "target": "https://your-api.onrender.com",
            "sha3_256": "…"
          }
        }
      },
      "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",
                "properties": {
                  "request": {
                    "type": "string",
                    "description": "service input (see body example)"
                  },
                  "serviceId": {
                    "type": "string",
                    "description": "the service id, \"aman-x402-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",
            "properties": {
              "example": {
                "type": "object",
                "example": {
                  "ok": true,
                  "probes": [
                    {
                      "path": "/health",
                      "status": 200,
                      "latencyMs": 96
                    }
                  ],
                  "sha256": "…",
                  "target": "https://your-api.onrender.com",
                  "sha3_256": "…"
                }
              }
            }
          }
        }
      }
    }
  },
  "facilitator": {
    "url": "https://amanchain-relay.gitajhd.workers.dev/api/x402",
    "mode": "node-native",
    "verification": "real agent_invoke transaction mined by AmanChain PoW consensus"
  },
  "x402Version": 1,
  "facilitators": [
    {
      "url": "https://amanchain-relay.gitajhd.workers.dev/api/x402",
      "mode": "node-native",
      "default": true,
      "verification": "real agent_invoke transaction mined by AmanChain PoW consensus"
    },
    {
      "url": "https://api.cdp.coinbase.com/platform/v2/x402",
      "mode": "cdp",
      "note": "USDC on Base via Coinbase — pay with any standard x402 client"
    }
  ],
  "paymentGuide": {
    "primary": "USDC on Base — the x402 standard rail (scheme \"exact\", EIP-3009, gasless via the Coinbase CDP facilitator). Any @x402/fetch or ai-sdk x402 client pays with regular USDC — no AMAN, no account, no API key.",
    "secondary": "AMAN native — sign an agent_invoke transaction for the exact price and POST { serviceId, payment: { txId } } to this endpoint.",
    "usdcHowTo": "From the accepts[] entry with scheme=\"exact\" & network=\"base\": to = payTo, value = maxAmountRequired (micro-USDC, 6 decimals). Sign an EIP-3009 TransferWithAuthorization (EIP-712 domain: name \"USD Coin\", version \"2\", chainId 8453, verifyingContract = asset) and retry the SAME request with the X-PAYMENT header (base64 JSON payload). Get USDC on Base from Coinbase (withdraw → Base network) or bridge.base.org. Gas is paid by the facilitator — you only need USDC."
  },
  "requirements": {
    "asset": "AMAN",
    "payTo": "AMb5261ade9f2bf55da5ad3dfe55edd3c71208c8e2475a8bae",
    "scheme": "aman-x402",
    "txType": "agent_invoke",
    "chainId": 1,
    "network": "mainnet",
    "priceAman": 1,
    "serviceId": "aman-x402-validation",
    "serviceName": "x402 Production Validation",
    "maxTimeoutSeconds": 120
  },
  "requestFormat": "https://your-api.onrender.com",
  "requestRequired": true
}

Accepts

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

0.622071USDC≈ $0.622071 USD
on Base · exact scheme

Pay 0.622071 USDC on Base to 0xfB56…b2f39. The signed payment is good for 2 minutes.

Paid to
0xfB56…b2f39
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
622071 smallest units
Buys
x402 endpoint validation and audit API — bounded zero-spend probes of any public service: health, ready and well-known checks, optional MCP handshake with tools
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xfB5625d44be488414606773244F0De35410b2f39",
    "amount": "622071",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://amanchain-relay.gitajhd.workers.dev/api/x402/aman-x402-validation",
    "recipient": "0xfB5625d44be488414606773244F0De35410b2f39",
    "description": "x402 endpoint validation and audit API — bounded zero-spend probes of any public service: health, ready and well-known checks, optional MCP handshake with tools",
    "maxAmountRequired": "622071",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "request": "https://your-api.onrender.com",
          "serviceId": "aman-x402-validation"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "probes": [
            {
              "path": "/health",
              "status": 200,
              "latencyMs": 96
            }
          ],
          "sha256": "…",
          "target": "https://your-api.onrender.com",
          "sha3_256": "…"
        }
      }
    },
    "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",
              "properties": {
                "request": {
                  "type": "string",
                  "description": "service input (see body example)"
                },
                "serviceId": {
                  "type": "string",
                  "description": "the service id, \"aman-x402-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"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-10 23:07Z
Last indexed by Roundhouse
2026-09-25 13:10Z
Last enriched (probe, favicon, geo)
2026-09-23 01:15Z
x402 version
2
Max timeout
120s
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. 17 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 x402 Production Validation 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=x402%20Production%20Validation'
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://amanchain-relay.gitajhd.workers.dev/api/x402/aman-x402-validation, 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.