medien.halowerk.com
HALOWERK provides paid endpoints that AI agents call and pay for per request via x402 on Base. No account, no API key, no signup.
InferenceLiveeip155:8453Exactvia cdp
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 18 snapshots so far.
$11.47
Verified settled volume
2,655 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-11 15:47Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5EThe 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": "bg_remove",
"error": "payment_required",
"accepts": [
{
"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": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://medien.halowerk.com/pricing",
"resource": {
"url": "https://medien.halowerk.com/v1/bg-remove",
"mimeType": "application/json",
"description": "Takes an image by URL or inline base64 and returns it with the background removed, as PNG or WebP with a real alpha channel, together with the share of the frame that survived, the bounding box of the remaining subject and the option to crop to it. The whole computation runs locally with rembg and the U2-Net model: the image is not sent anywhere, no provider sees it, nothing is retained, and there is consequently no purchase price and no third-party terms to accept — for a product photo not yet…"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"format": "png",
"source": {
"filename": "blue-circle.png",
"content_base64": "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"
},
"crop_to_subject": false
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"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": [
"source"
],
"properties": {
"format": {
"enum": [
"png",
"webp"
],
"type": "string",
"default": "png",
"description": "Output format. Both carry an alpha channel; WebP is markedly smaller."
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"description": "Public http(s) URL of the image."
},
"filename": {
"type": "string",
"maxLength": 260
},
"content_base64": {
"type": "string",
"maxLength": 12000000,
"description": "The image inline, base64."
}
},
"description": "The image. Either url or content_base64.",
"additionalProperties": false
},
"quality": {
"type": "integer",
"default": 90,
"maximum": 100,
"minimum": 1,
"description": "For WebP output."
},
"max_width": {
"type": "integer",
"maximum": 4000,
"minimum": 32,
"description": "Scale the result down so the width fits. Never scales up."
},
"alpha_matting": {
"type": "boolean",
"default": false,
"description": "Refine the edge for hair and fur. Slower, and not always better — compare before using it by default."
},
"crop_to_subject": {
"type": "boolean",
"default": false,
"description": "Crop the result to the bounding box of what remained."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
},
"price_usdc": "0.01",
"description": "Takes an image by URL or inline base64 and returns it with the background removed, as PNG or WebP with a real alpha channel, together with the share of the frame that survived, the bounding box of the remaining subject and the option to crop to it. The whole computation runs locally with rembg and the U2-Net model: the image is not sent anywhere, no provider sees it, nothing is retained, and there is consequently no purchase price and no third-party terms to accept — for a product photo not yet published or a picture of a person, that is the whole point. Optional alpha matting refines the edge for hair and fur at a noticeably higher compute cost, and is off by default because it is slower and not always better. The limits are stated: the model finds the salient subject, so an image with no clear subject, several equally prominent ones, or a subject the same colour as its background produces a poor mask, and the returned foreground share is the number that shows it — a result near zero or near one almost always means the cut-out failed rather than that the picture was unusual. Glass, smoke, fine mesh and motion blur are the known hard cases. The result is a suggestion, not a measurement, and nothing here decides whether the image may be used.",
"inputSchema": {
"type": "object",
"required": [
"source"
],
"properties": {
"format": {
"enum": [
"png",
"webp"
],
"type": "string",
"default": "png",
"description": "Output format. Both carry an alpha channel; WebP is markedly smaller."
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"description": "Public http(s) URL of the image."
},
"filename": {
"type": "string",
"maxLength": 260
},
"content_base64": {
"type": "string",
"maxLength": 12000000,
"description": "The image inline, base64."
}
},
"description": "The image. Either url or content_base64.",
"additionalProperties": false
},
"quality": {
"type": "integer",
"default": 90,
"maximum": 100,
"minimum": 1,
"description": "For WebP output."
},
"max_width": {
"type": "integer",
"maximum": 4000,
"minimum": 32,
"description": "Scale the result down so the width fits. Never scales up."
},
"alpha_matting": {
"type": "boolean",
"default": false,
"description": "Refine the edge for hair and fur. Slower, and not always better — compare before using it by default."
},
"crop_to_subject": {
"type": "boolean",
"default": false,
"description": "Crop the result to the bounding box of what remained."
}
},
"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.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"format": "png",
"source": {
"url": "https://example.com/produkt.jpg"
},
"crop_to_subject": false
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$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": [
"source"
],
"properties": {
"format": {
"enum": [
"png",
"webp"
],
"type": "string",
"default": "png",
"description": "Output format. Both carry an alpha channel; WebP is markedly smaller."
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"description": "Public http(s) URL of the image."
},
"filename": {
"type": "string",
"maxLength": 260
},
"content_base64": {
"type": "string",
"maxLength": 12000000,
"description": "The image inline, base64."
}
},
"description": "The image. Either url or content_base64.",
"additionalProperties": false
},
"quality": {
"type": "integer",
"default": 90,
"maximum": 100,
"minimum": 1,
"description": "For WebP output."
},
"max_width": {
"type": "integer",
"maximum": 4000,
"minimum": 32,
"description": "Scale the result down so the width fits. Never scales up."
},
"alpha_matting": {
"type": "boolean",
"default": false,
"description": "Refine the edge for hair and fur. Slower, and not always better — compare before using it by default."
},
"crop_to_subject": {
"type": "boolean",
"default": false,
"description": "Crop the result to the bounding box of what remained."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-11 15:47Z
- Last indexed by Roundhouse
- 2026-09-10 15:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 05:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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. 18 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service medien.halowerk.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=medien.halowerk.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://medien.halowerk.com/v1/bg-remove, 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.