HALOWERK Medien

HALOWERK provides paid endpoints that AI agents call and pay for per request via x402 on Base. No account, no API key, no signup.

DataLiveeip155:8453Exactvia cdp
OssOpencvP009
Settlements · 30d
5,237↑ 54%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$22.11
Verified settled volume
A floor: summed over 5,000 of 6,901 verified settlements.
$0.0030
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.
2
Unique payers · 30d
Last called 2026-10-25 19:39Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E

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.

{
  "docs": "https://medien.halowerk.com/llms.txt",
  "name": "oss_opencv_robot_hand_eye_calibrate",
  "error": "payment_required",
  "accepts": [
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      "extra": {
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        "asset": "USDC",
        "version": "2",
        "eip712Domain": {
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          "chainId": 8453,
          "version": "2",
          "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
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        "assetTransferMethod": "eip3009"
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      "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
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  ],
  "pricing": "https://medien.halowerk.com/pricing",
  "resource": {
    "url": "https://medien.halowerk.com/v1/oss-opencv-robot-hand-eye-calibrate",
    "tags": [
      "oss",
      "opencv",
      "p009"
    ],
    "mimeType": "application/json",
    "description": "Solves the hand-eye problem: given a series of gripper-to-base poses read from the robot and the matching target-to-camera poses seen by the camera, it recovers the rigid transform between camera and gripper that stays constant as the arm moves. This is what lets a robot act on what its camera sees. The poses must be genuinely synchronized — a pairing that is off by one sample produces a confident and entirely wrong transform, and nothing in the data reveals it.",
    "serviceName": "HALOWERK Medien",
    "outputSchema": {
      "$ref": "https://medien.halowerk.com/v1/oss-opencv-robot-hand-eye-calibrate/schema#/outputSchema"
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        "output": {
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          "example": {
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              "pose_count": 6,
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        "required": [
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                "$schema": "https://json-schema.org/draft/2020-12/schema",
                "required": [
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                "properties": {
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                "additionalProperties": false
              },
              "type": {
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                "const": "http"
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                  "PATCH"
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              "bodyType": {
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            },
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            "properties": {
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              "example": {
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                "required": [
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                  "result",
                  "upstream",
                  "runtime_ms"
                ],
                "properties": {
                  "result": {
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                      "pose_count",
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                    "properties": {
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                      "pose_count": {
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                      "camera_to_gripper": {
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                    "additionalProperties": false
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                  "upstream": {
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                    "required": [
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                      "package_version",
                      "binary_sha256",
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                    "properties": {
                      "project": {
                        "const": "OpenCV"
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                      "version": {
                        "const": "4.13.0"
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                      "components": {
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                          "calibrateHandEye"
                        ]
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                      "binary_sha256": {
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                      },
                      "numpy_version": {
                        "const": "2.5.0"
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                      "package_version": {
                        "const": "4.13.0.92"
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                    },
                    "additionalProperties": false
                  },
                  "operation": {
                    "const": "robot-hand-eye-calibrate"
                  },
                  "runtime_ms": {
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                },
                "additionalProperties": false
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        }
      }
    }
  },
  "price_usdc": "0.003",
  "description": "Solves the hand-eye problem: given a series of gripper-to-base poses read from the robot and the matching target-to-camera poses seen by the camera, it recovers the rigid transform between camera and gripper that stays constant as the arm moves. This is what lets a robot act on what its camera sees. The poses must be genuinely synchronized — a pairing that is off by one sample produces a confident and entirely wrong transform, and nothing in the data reveals it.",
  "inputSchema": {
    "type": "object",
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "required": [
      "gripper_to_base",
      "target_to_camera"
    ],
    "properties": {
      "gripper_to_base": {
        "type": "array",
        "items": {
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        "maxItems": 32,
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      },
      "target_to_camera": {
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    },
    "description": "Numeric JSON arrays only. Additionally enforce equal paired dimensions, nondegenerate geometry, maximum 32768 pixels/image, 131072 scalars/array, and 1048576 encoded bytes. No paths or network resources.",
    "additionalProperties": false
  },
  "price_model": "per_call",
  "x402Version": 2,
  "instructions": "Sign the accepted terms with an x402 client and repeat the request with the payment header.",
  "payment_header": "PAYMENT-SIGNATURE",
  "capability_request": {
    "url": "https://bedarf.halowerk.com/capabilities/request",
    "cost": "free",
    "method": "POST",
    "description": "Missing a capability, or does the scope not fit? Report the need here - no payment required. Similar reports are bundled; the response returns an id you can check back on.",
    "body_example": {
      "max_price": 0.01,
      "description": "what exactly is needed",
      "requested_capability": "short label"
    }
  }
}

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 0x2880…C4E5E. The signed payment is good for 5 minutes.

USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
3000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "asset": "USDC",
      "version": "2",
      "eip712Domain": {
        "name": "USD Coin",
        "chainId": 8453,
        "version": "2",
        "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
      },
      "network_name": "Base Mainnet",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
    "amount": "3000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

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}

Provenance

Seen in the source catalog
2026-10-25 19:39Z
Last indexed by Roundhouse
2026-10-26 20:00Z
Last enriched (probe, favicon, geo)
2026-10-26 12:15Z
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

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 HALOWERK Medien 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=HALOWERK%20Medien'
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://medien.halowerk.com/v1/oss-opencv-robot-hand-eye-calibrate, 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.