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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
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.

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  },
  "price_usdc": "0.003",
  "description": "Given paired calibration observations and the intrinsics of both cameras, this computes the rotation and translation between them and derives everything a stereo pipeline needs downstream: rectification transforms for both views, both projection matrices, and the disparity-to-depth mapping. The RMS error in pixels says how well the rig geometry actually fits the data.",
  "inputSchema": {
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  },
  "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",
  "requestExampleUrl": "https://medien.halowerk.com/v1/oss-opencv-stereo-rig-calibrate/schema#/requestExample",
  "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"
    }
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}

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
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Extensions

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                      "maxItems": 3,
                      "minItems": 3
                    },
                    "right_projection": {
                      "type": "array",
                      "items": {
                        "type": "array",
                        "items": {
                          "type": "number"
                        },
                        "maxItems": 4,
                        "minItems": 4
                      },
                      "maxItems": 3,
                      "minItems": 3
                    },
                    "disparity_to_depth": {
                      "type": "array",
                      "items": {
                        "type": "array",
                        "items": {
                          "type": "number"
                        },
                        "maxItems": 4,
                        "minItems": 4
                      },
                      "maxItems": 4,
                      "minItems": 4
                    },
                    "left_rectification": {
                      "type": "array",
                      "items": {
                        "type": "array",
                        "items": {
                          "type": "number"
                        },
                        "maxItems": 3,
                        "minItems": 3
                      },
                      "maxItems": 3,
                      "minItems": 3
                    },
                    "right_rectification": {
                      "type": "array",
                      "items": {
                        "type": "array",
                        "items": {
                          "type": "number"
                        },
                        "maxItems": 3,
                        "minItems": 3
                      },
                      "maxItems": 3,
                      "minItems": 3
                    }
                  },
                  "additionalProperties": false
                },
                "upstream": {
                  "type": "object",
                  "required": [
                    "project",
                    "version",
                    "package_version",
                    "binary_sha256",
                    "numpy_version",
                    "components"
                  ],
                  "properties": {
                    "project": {
                      "const": "OpenCV"
                    },
                    "version": {
                      "const": "4.13.0"
                    },
                    "components": {
                      "const": [
                        "stereoCalibrate",
                        "stereoRectify"
                      ]
                    },
                    "binary_sha256": {
                      "const": "1fd4eb220f9986baa0ea0492cbcbedf85b868e792cbcac5f69e10d067a2f956c"
                    },
                    "numpy_version": {
                      "const": "2.5.0"
                    },
                    "package_version": {
                      "const": "4.13.0.92"
                    }
                  },
                  "additionalProperties": false
                },
                "operation": {
                  "const": "stereo-rig-calibrate"
                },
                "runtime_ms": {
                  "type": "number",
                  "minimum": 0
                }
              },
              "additionalProperties": false
            }
          }
        }
      },
      "additionalProperties": true
    }
  }
}

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-stereo-rig-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.