Print Prototype Engineer
Apply deterministic parameter edits to a self-contained OpenSCAD model, verify preserve constraints against the baseline, slice it with PrusaSlicer, and return checked alternatives (orientations, partial edits) when goals are unmet.
InferenceLiveeip155:8453Exactvia cdp
3d-printingOpenscadPrusaslicerPrototypingOrientation
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far.
$2.45
Verified settled volume
23 settlements proven x402 by their on-chain EIP-3009 marker.
$0.150
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 2026-09-11 20:08Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x26026370fe8b2bb17af9092a17691c76519366daThe 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.
0.15USDC≈ $0.15 USD
on Base · exact scheme
Pay 0.15 USDC on Base to 0x2602…366da. The signed payment is good for 5 minutes.
- Paid to
- 0x2602…366da
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 150000 smallest units
The catalog’s raw entry
[
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"payTo": "0x26026370fe8b2bb17af9092a17691c76519366da",
"amount": "150000",
"scheme": "exact",
"network": "eip155:8453",
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{
"bazaar": {
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"delta": 10
}
],
"goals": {
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220,
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],
"noSupports": true
},
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"maxAlternatives": 3,
"orientationSearch": true
},
"type": "http",
"method": "POST",
"bodyType": "json"
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"output": {
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0,
0
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{
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{
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{
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{
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"status": "passed"
},
{
"code": "SLICER",
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"status": "passed"
},
{
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"status": "passed"
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{
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"status": "failed"
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{
"code": "GOAL_PRINT_TIME",
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},
{
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},
{
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"status": "passed"
},
{
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"status": "passed"
},
{
"code": "PREVIEW",
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"status": "passed"
}
],
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},
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{
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},
"rotation": {
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"yDeg": 0
},
"orientation": "-z"
},
{
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"filament": true,
"printTime": true,
"noSupports": true
},
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30
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},
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},
"orientation": "+x"
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{
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30
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},
"rotation": {
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},
"orientation": "-x"
},
{
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"filament": true,
"printTime": true,
"noSupports": true
},
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},
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"footprintMm": [
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60
],
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"bedContactAreaMm2": 525
},
"rotation": {
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"yDeg": 0
},
"orientation": "+y"
},
{
"goals": {
"fit": true,
"filament": true,
"printTime": true,
"noSupports": true
},
"slice": {
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"layerCount": 150,
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"supportFilamentMm": 0,
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},
"sliced": true,
"overhang": {
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"footprintMm": [
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60
],
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"bedContactAreaMm2": 525
},
"rotation": {
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"yDeg": 0
},
"orientation": "-y"
}
],
"limitations": [
"The service validates CAD, mesh closure, dimensions, preserve constraints, and slicer output only; it does not verify physical printability, strength, tolerances, or material certification.",
"OpenSCAD coordinates are interpreted as millimetres; no automatic unit conversion is performed.",
"Overhang analysis is a pure 45°-surface-normal geometric heuristic; the needsSupport goal is decided by PrusaSlicer's own automatic support generator, which can disagree with the heuristic.",
"G-code is not byte-deterministic across runs (seam placement jitters by a few microns); only the parsed header metrics are treated as stable.",
"This service charges for every outcome it returns — passed, goals_unmet, or rejected — because CAD compilation, mesh inspection, and slicing work is performed before the outcome is known."
],
"alternatives": [
{
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"mesh": {
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"max": [
50,
1.83697019872103e-15,
30.000000000000004
],
"min": [
0,
-60,
0
],
"size": [
50,
60,
30.000000000000004
]
},
"volumeMm3": 15750,
"watertight": true,
"triangleCount": 20
},
"slice": {
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"filamentMm": 3370.97,
"layerCount": 150,
"needsSupport": false,
"supportFilamentMm": 0,
"estimatedPrintTimeMin": 48.06666666666667
},
"artifact": "alternative-1.gcode",
"orientation": "+y",
"editFraction": null,
"meetsAllGoals": true,
"parametersApplied": null
},
{
"kind": "orientation",
"mesh": {
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50,
60,
3.67394039744206e-15
],
"min": [
0,
0,
-30
],
"size": [
50,
60,
30.000000000000004
]
},
"volumeMm3": 15750,
"watertight": true,
"triangleCount": 20
},
"slice": {
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"filamentMm": 3371.2,
"layerCount": 150,
"needsSupport": false,
"supportFilamentMm": 0,
"estimatedPrintTimeMin": 48.1
},
"artifact": "alternative-2.gcode",
"orientation": "-y",
"editFraction": null,
"meetsAllGoals": true,
"parametersApplied": null
},
{
"kind": "orientation",
"mesh": {
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30,
50.00000000000001
],
"min": [
-60,
0,
0
],
"size": [
60,
30,
50.00000000000001
]
},
"volumeMm3": 15750,
"watertight": true,
"triangleCount": 20
},
"slice": {
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"filamentMm": 3326.3,
"layerCount": 250,
"needsSupport": false,
"supportFilamentMm": 0,
"estimatedPrintTimeMin": 55.266666666666666
},
"artifact": "alternative-3.gcode",
"orientation": "+x",
"editFraction": null,
"meetsAllGoals": true,
"parametersApplied": null
}
],
"recommendations": [
{
"code": "BETTER_ORIENTATION",
"message": "A different axis-aligned orientation meets every requested goal; see the orientation alternatives."
}
],
"parametersApplied": {
"height": 60
}
}
}
},
"schema": {
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"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
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],
"properties": {
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"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
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"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
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],
"properties": {
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"items": {
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"oneOf": [
{
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"name",
"value"
],
"properties": {
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},
"name": {
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"pattern": "^[A-Za-z_][A-Za-z0-9_]{0,63}$"
},
"value": {
"anyOf": [
{
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"description": "Maximum 512 UTF-8 bytes."
},
{
"type": "number",
"maximum": 1000000,
"minimum": -1000000
},
{
"type": "boolean"
}
]
}
},
"additionalProperties": false
},
{
"required": [
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"name",
"delta"
],
"properties": {
"kind": {
"const": "offset"
},
"name": {
"type": "string",
"pattern": "^[A-Za-z_][A-Za-z0-9_]{0,63}$"
},
"delta": {
"type": "number",
"maximum": 1000000,
"minimum": -1000000
}
},
"additionalProperties": false
},
{
"required": [
"kind",
"name",
"factor"
],
"properties": {
"kind": {
"const": "scale"
},
"name": {
"type": "string",
"pattern": "^[A-Za-z_][A-Za-z0-9_]{0,63}$"
},
"factor": {
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"maximum": 1000000,
"exclusiveMinimum": 0
}
},
"additionalProperties": false
}
]
},
"default": [],
"maxItems": 16,
"description": "Deterministic edits applied in order to a top-level scalar assignment: set a literal, offset a numeric value, or scale it by a positive factor."
},
"goals": {
"type": "object",
"default": {},
"properties": {
"maxSizeMm": {
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"items": {
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"maximum": 1000,
"exclusiveMinimum": 0
},
"default": [
220,
220,
250
],
"maxItems": 3,
"minItems": 3
},
"noSupports": {
"type": "boolean",
"default": true
},
"maxFilamentG": {
"type": "number",
"maximum": 100000,
"minimum": 0.01
},
"maxPrintTimeMin": {
"type": "number",
"maximum": 100000,
"minimum": 1
}
},
"additionalProperties": false
},
"source": {
"type": "string",
"maxLength": 16384,
"minLength": 1,
"description": "Self-contained OpenSCAD, interpreted in millimetres; maximum 16 KiB UTF-8. External imports are prohibited."
},
"profile": {
"enum": [
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"fdm-petg-0.4"
],
"type": "string",
"default": "fdm-pla-0.4"
},
"preserve": {
"type": "array",
"items": {
"type": "object",
"oneOf": [
{
"required": [
"kind",
"name"
],
"properties": {
"kind": {
"const": "parameter"
},
"name": {
"type": "string",
"pattern": "^[A-Za-z_][A-Za-z0-9_]{0,63}$"
}
},
"additionalProperties": false
},
{
"required": [
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"axis"
],
"properties": {
"axis": {
"enum": [
"x",
"y",
"z"
],
"type": "string"
},
"kind": {
"const": "bounds_axis"
},
"toleranceMm": {
"type": "number",
"default": 0.05,
"maximum": 1000,
"minimum": 0
}
},
"additionalProperties": false
},
{
"required": [
"kind"
],
"properties": {
"kind": {
"const": "volume"
},
"tolerancePercent": {
"type": "number",
"default": 1,
"maximum": 100,
"minimum": 0
}
},
"additionalProperties": false
}
]
},
"default": [],
"maxItems": 16,
"description": "Constraints the revision must not violate: an edit must not target a named parameter, a bounding-box axis must stay within a tolerance, or the volume must stay within a percentage."
},
"parameters": {
"type": "object",
"default": {},
"description": "Overrides must name unique top-level scalar literal assignments, not derived expressions or reserved names.",
"maxProperties": 64,
"propertyNames": {
"pattern": "^[A-Za-z_][A-Za-z0-9_]{0,63}$"
},
"additionalProperties": {
"anyOf": [
{
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"maxLength": 512,
"description": "Maximum 512 UTF-8 bytes."
},
{
"type": "number",
"maximum": 1000000,
"minimum": -1000000
},
{
"type": "boolean"
}
]
}
},
"maxAlternatives": {
"type": "integer",
"default": 3,
"maximum": 4,
"minimum": 0
},
"orientationSearch": {
"type": "boolean",
"default": true,
"description": "Evaluate the other five axis-aligned orientations as alternatives."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
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}
},
"eip2612GasSponsoring": {},
"erc20ApprovalGasSponsoring": {}
}Provenance
- Seen in the source catalog
- 2026-09-11 20:08Z
- Last indexed by Roundhouse
- 2026-09-24 10:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 20:16Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
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This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
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Using Roundhouse, look up the x402 service Print Prototype Engineer 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=Print%20Prototype%20Engineer' 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://prototype.api.williamrobinson.dev/v1/prototype/revise, 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.