app.heinrichstech.com

The multi-chain x402 payment gateway for AI agents. 47 paid endpoints. Agents pay USDC or LINK on Base, XRP, RLUSD, or USDC IOU on XRPL, XLM or USDC on Stellar, or native XRP on XRPL EVM Sidechain. Same endpoint, agent picks the chain. No accounts. No API keys. No signup.

OtherLiveeip155:8453Exactvia cdp

https://app.heinrichstech.com/v1/cdp/x402-discover

Settlements · 30d

33↓ 83%

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$0.66

Verified settled volume

119 settlements proven x402 by their on-chain EIP-3009 marker.

$0.0050

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

Last called 2026-07-29 21:54Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xDa2F35d283c42dd60B965322394bc658a5c1769F

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.

0.005USDC≈ $0.005 USD

on Base · exact scheme

Pay 0.005 USDC on Base to 0xDa2F…1769F. The signed payment is good for 5 minutes.

Paid to: 0xDa2F…1769F
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 5000 smallest units

5000units

on xrpl:0 · 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: rfryhe…BkUEy
Token contract: XRP
Payment window: 10 minutes

0.005000units

on xrpl:0 · 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: rfryhe…BkUEy
Token contract: 524C55…00000
Payment window: 10 minutes

0.005000units

on xrpl:0 · 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: rfryhe…BkUEy
Token contract: 555344…00000
Payment window: 10 minutes

5000units

on stellar:pubnet · 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: GCB5WZ…FA2GO
Token contract: XLM
Payment window: 5 minutes

5000units

on stellar:pubnet · 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: GCB5WZ…FA2GO
Token contract: USDC
Payment window: 5 minutes

100000000000000units

on Base · onchain 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: 0xDa2F…1769F
Token contract: 0x88Fb…6e196
Payment window: 5 minutes

400000000000000units

on eip155:1440000 · onchain 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: 0xDa2F…1769F
Token contract: XRP
Payment window: 5 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xDa2F35d283c42dd60B965322394bc658a5c1769F",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "XRP",
    "extra": {
      "invoiceId": "bb-xrpl-e03336f97550b133",
      "sourceTag": 804681468
    },
    "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
    "amount": "5000",
    "scheme": "exact",
    "network": "xrpl:0",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 600
  },
  {
    "asset": "524C555344000000000000000000000000000000",
    "extra": {
      "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
      "invoiceId": "bb-xrpl-cc50127b8477673e",
      "sourceTag": 804681468
    },
    "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
    "amount": "0.005000",
    "scheme": "exact",
    "network": "xrpl:0",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 600
  },
  {
    "asset": "5553444300000000000000000000000000000000",
    "extra": {
      "issuer": "rcEGREd8NmkKRE8GE424sksyt1tJVFZwu",
      "invoiceId": "bb-xrpl-379071c7281512ac",
      "sourceTag": 804681468
    },
    "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
    "amount": "0.005000",
    "scheme": "exact",
    "network": "xrpl:0",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 600
  },
  {
    "asset": "XLM",
    "extra": {
      "currency": "XLM"
    },
    "payTo": "GCB5WZT5VCBBATGMQMTB6TLUXD6KQC6N5ITRWK3CCP4J3YOCE45FA2GO",
    "amount": "5000",
    "scheme": "exact",
    "network": "stellar:pubnet",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "USDC",
    "extra": {
      "issuer": "GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
      "currency": "USDC"
    },
    "payTo": "GCB5WZT5VCBBATGMQMTB6TLUXD6KQC6N5ITRWK3CCP4J3YOCE45FA2GO",
    "amount": "5000",
    "scheme": "exact",
    "network": "stellar:pubnet",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x88Fb150BDc53A65fe94Dea0c9BA0a6dAf8C6e196",
    "extra": {
      "notes": "Agent submits ERC-20 transfer to payTo on Base, then sends X-PAYMENT with { payload: { transactionHash: \"0x...\" } }. Standard x402 SDKs do not speak this scheme; see /docs/LINK.md for the integration guide.",
      "symbol": "LINK",
      "decimals": 18,
      "facilitator": "self-hosted-link-base",
      "paymentPattern": "onchain-transfer-then-reference"
    },
    "payTo": "0xDa2F35d283c42dd60B965322394bc658a5c1769F",
    "amount": "100000000000000",
    "scheme": "onchain",
    "network": "eip155:8453",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "XRP",
    "extra": {
      "notes": "Send a standard EVM transaction with value=amount + to=payTo on XRPL EVM Sidechain (chainID 1440000), then send X-PAYMENT with { payload: { transactionHash: \"0x...\" } }.",
      "symbol": "XRP",
      "decimals": 18,
      "facilitator": "self-hosted-xrpl-evm",
      "nativeGasToken": true,
      "paymentPattern": "onchain-native-transfer-then-reference"
    },
    "payTo": "0xDa2F35d283c42dd60B965322394bc658a5c1769F",
    "amount": "400000000000000",
    "scheme": "onchain",
    "network": "eip155:1440000",
    "resource": "https://app.heinrichstech.com/v1/cdp/x402-discover",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "url": "https://app.heinrichstech.com/v1/cdp/echo"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "target": {
            "url": "https://app.heinrichstech.com/v1/cdp/echo",
            "status": 402,
            "finalUrl": "https://app.heinrichstech.com/v1/cdp/echo",
            "contentType": "application/json"
          },
          "service": "BitBooth /v1/cdp/x402-discover",
          "summary": {
            "hasBazaar": false,
            "endpointsFound": 1,
            "hasDirectChallenge": true
          },
          "direct402": {
            "error": "X-PAYMENT header is required",
            "accepts": [
              {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0000000000000000000000000000000000000000",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:8453",
                "maxTimeoutSeconds": 300
              }
            ],
            "x402Version": 2
          },
          "bazaarJson": null,
          "discoveryHints": {
            "linkTags": [],
            "metaTags": [],
            "anchorLinks": []
          }
        }
      }
    },
    "tags": [
      "x402",
      "discovery",
      "security",
      "agent-tools"
    ],
    "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": {
              "required": [
                "url"
              ],
              "properties": {
                "url": {
                  "type": "string",
                  "format": "uri",
                  "maxLength": 2048,
                  "description": "Absolute URL of the target to probe for x402 endpoints. The endpoint follows redirects and caps the inspected body at 512KB."
                }
              }
            },
            "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"
            }
          }
        }
      }
    },
    "category": "security",
    "discoverable": true
  }
}

Provenance

Seen in the source catalog: 2026-07-29 21:54Z
Last indexed by Roundhouse: 2026-07-30 00:50Z
Last enriched (probe, favicon, geo): 2026-09-12 16:45Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 403

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.

Show the prompt

Using Roundhouse, look up the x402 service app.heinrichstech.com 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=app.heinrichstech.com'
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://app.heinrichstech.com/v1/cdp/x402-discover, 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.