WithZero
Create media, research companies and people, publish to the web, remember context, deploy apps, and schedule work-on demand, without vendor accounts or API keys.
SearchLiveeip155:8453Exactvia cdp
MediaResearchPublishingAutomationMemory
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$30.69
Verified settled volume
182 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 2026-09-14 19:57Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x9811c0900fcb719bbc363a3846d2d6db2771dea8The 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.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x9811…1dea8. The signed payment is good for 5 minutes.
- Paid to
- 0x9811…1dea8
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"billing": {
"model": "prepaid",
"description": "amount is the price and is charged in full when you pay, and is not returned if delivery fails: this rail settles once and cannot give change. (Exact entries appear only on fixed-price requests - ceiling-priced requests are offered the reserve-and-pay-actual entry instead.)"
},
"version": "2",
"zeroclick": {
"kind": "transaction",
"zcRequestId": "zcreq_WyemYtmlHk64TKP1OKJrr",
"agentPaymentId": "apay_QSkJpXu2LB-JuXdYf8U-u"
}
},
"payTo": "0x9811c0900fcb719bbc363a3846d2d6db2771dea8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"loop": true
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"loop"
],
"properties": {
"fps": {
"type": "integer",
"maximum": 60,
"minimum": 1,
"description": "Playback rate for animation consumers."
},
"game": {
"type": "object",
"properties": {
"clips": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"fromFrame",
"toFrame"
],
"properties": {
"fps": {
"type": "integer",
"maximum": 60,
"minimum": 1
},
"loop": {
"type": "boolean"
},
"name": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"toFrame": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": 0
},
"fromFrame": {
"type": "integer",
"maximum": 9007199254740991,
"minimum": 0
}
},
"additionalProperties": false
},
"maxItems": 64,
"description": "Named animation ranges within this canvas."
},
"facing": {
"enum": [
"left",
"right",
"none"
],
"type": "string",
"description": "Native facing direction of the authored art."
},
"frames": {
"type": "object",
"description": "Metadata keyed by canonical zero-based frame index.",
"propertyNames": {
"type": "string",
"pattern": "^(0|[1-9]\\d*)$"
},
"additionalProperties": {
"type": "object",
"properties": {
"boxes": {
"type": "array",
"items": {
"type": "object",
"required": [
"kind",
"x",
"y",
"width",
"height"
],
"properties": {
"x": {
"type": "number"
},
"y": {
"type": "number"
},
"kind": {
"enum": [
"hit",
"hurt",
"collision",
"interaction"
],
"type": "string"
},
"name": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"width": {
"type": "number",
"exclusiveMinimum": 0
},
"height": {
"type": "number",
"exclusiveMinimum": 0
}
},
"additionalProperties": false
},
"maxItems": 64,
"description": "Gameplay geometry associated with this frame."
},
"pivot": {
"type": "object",
"required": [
"x",
"y"
],
"properties": {
"x": {
"type": "number",
"description": "Horizontal pixel coordinate from the left edge of the frame."
},
"y": {
"type": "number",
"description": "Vertical pixel coordinate from the top edge of the frame."
}
},
"description": "Per-frame pivot override. Omit to use defaultPivot.",
"additionalProperties": false
},
"events": {
"type": "array",
"items": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"payload": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
}
]
}
}
},
"additionalProperties": false
},
"maxItems": 64,
"description": "Events emitted when playback enters this frame."
},
"sockets": {
"type": "object",
"description": "Named attachment points such as feet, muzzle, hand, or weapon.",
"propertyNames": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"additionalProperties": {
"type": "object",
"required": [
"x",
"y"
],
"properties": {
"x": {
"type": "number",
"description": "Horizontal pixel coordinate from the left edge of the frame."
},
"y": {
"type": "number",
"description": "Vertical pixel coordinate from the top edge of the frame."
}
},
"additionalProperties": false
}
},
"durationMs": {
"type": "integer",
"maximum": 60000,
"minimum": 1,
"description": "Per-frame duration override. Omit to use the clip or canvas FPS."
}
},
"additionalProperties": false
}
},
"rootMotion": {
"anyOf": [
{
"type": "string",
"const": "none"
},
{
"type": "object",
"properties": {
"socket": {
"type": "string",
"maxLength": 64,
"minLength": 1,
"description": "Socket whose movement represents root motion."
}
},
"additionalProperties": false
}
],
"description": "Whether movement is in-place or derived from a named socket."
},
"defaultPivot": {
"type": "object",
"required": [
"x",
"y"
],
"properties": {
"x": {
"type": "number",
"description": "Horizontal pixel coordinate from the left edge of the frame."
},
"y": {
"type": "number",
"description": "Vertical pixel coordinate from the top edge of the frame."
}
},
"description": "Default render pivot shared by frames without an override.",
"additionalProperties": false
}
},
"description": "Optional engine metadata: pivots, facing, root motion, clips, sockets, boxes, and events.",
"additionalProperties": false
},
"loop": {
"type": "boolean",
"default": true,
"description": "Whether playback loops (false = play once)."
},
"name": {
"type": "string",
"maxLength": 100,
"description": "Human-readable label for this canvas."
},
"width": {
"type": "integer",
"default": 64,
"maximum": 256,
"minimum": 8,
"description": "Canvas width in pixels (8–256). Default: 64."
},
"height": {
"type": "integer",
"default": 64,
"maximum": 256,
"minimum": 8,
"description": "Canvas height in pixels (8–256). Default: 64."
},
"initData": {
"type": "string",
"maxLength": 349528,
"minLength": 1,
"description": "Base64-encoded RGBA pixel data to initialise the canvas. Must be exactly width × height × 4 bytes after decoding. Omit to start with a transparent (empty) canvas."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
},
"zeroclick": {
"info": {
"payment": {
"id": "apay_QSkJpXu2LB-JuXdYf8U-u",
"amountUsd": "0.010000"
},
"service": "canvas-create",
"requestId": "zcreq_WyemYtmlHk64TKP1OKJrr"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"payment"
],
"properties": {
"agentId": {
"type": "string"
},
"payment": {
"type": "object",
"required": [
"id",
"amountUsd"
],
"properties": {
"id": {
"type": "string"
},
"amountUsd": {
"type": "string"
}
}
},
"service": {
"type": "string"
},
"requestId": {
"type": "string"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-14 19:57Z
- Last indexed by Roundhouse
- 2026-09-24 19:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 07:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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. 30 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 WithZero 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=WithZero' 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://agents.withzero.xyz/api/v1/pixelart/canvas, 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.