space.halowerk.com
Propagates a circular two-body orbit from altitude, inclination, RAAN, and initial orbital phase; rotates Earth at a fixed sidereal rate; and samples ground-station elevation. It ignores eccentricity, perturbations, epoch-dependent Greenwich angle, refraction, ellipsoid shape, terrain, and antenna masks, so it is a planning estimate rather than operational ephemeris.
OtherLiveeip155:8453Exactvia cdp
Calls · 30d
2↑ 86%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 snapshots so far.
$11.48
Verified settled volume
2,660 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0040
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.
2
Unique payers · 30d
Last called 2026-09-19 15:57Z
—
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://space.halowerk.com/llms.txt",
"name": "spacewerk_satellite_pass",
"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": "4000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://space.halowerk.com/pricing",
"resource": {
"url": "https://space.halowerk.com/v1/satellite-pass",
"mimeType": "application/json",
"description": "Propagates a circular two-body orbit from altitude, inclination, RAAN, and initial orbital phase; rotates Earth at a fixed sidereal rate; and samples ground-station elevation. It ignores eccentricity, perturbations, epoch-dependent Greenwich angle, refraction, ellipsoid shape, terrain, and antenna masks, so it is a planning estimate rather than operational ephemeris."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"raan_deg": 15,
"altitude_km": 550,
"step_seconds": 30,
"inclination_deg": 53,
"duration_seconds": 43200,
"initial_phase_deg": 210,
"ground_latitude_deg": 52.52,
"ground_longitude_deg": 13.405,
"minimum_elevation_deg": 10
},
"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": [
"altitude_km",
"inclination_deg",
"raan_deg",
"initial_phase_deg",
"ground_latitude_deg",
"ground_longitude_deg",
"duration_seconds",
"step_seconds",
"minimum_elevation_deg"
],
"properties": {
"raan_deg": {
"type": "number",
"maximum": 360,
"minimum": -360,
"description": "Right ascension of ascending node relative to Greenwich at t=0."
},
"altitude_km": {
"type": "number",
"maximum": 100000,
"minimum": 100,
"description": "Circular altitude above a spherical Earth."
},
"step_seconds": {
"type": "integer",
"maximum": 3600,
"minimum": 10
},
"inclination_deg": {
"type": "number",
"maximum": 180,
"minimum": 0
},
"duration_seconds": {
"type": "integer",
"maximum": 172800,
"minimum": 10
},
"initial_phase_deg": {
"type": "number",
"maximum": 360,
"minimum": -360,
"description": "Argument of latitude at t=0."
},
"ground_latitude_deg": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"ground_longitude_deg": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"minimum_elevation_deg": {
"type": "number",
"maximum": 90,
"minimum": -5
}
},
"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": "0.004",
"description": "Propagates a circular two-body orbit from altitude, inclination, RAAN, and initial orbital phase; rotates Earth at a fixed sidereal rate; and samples ground-station elevation. It ignores eccentricity, perturbations, epoch-dependent Greenwich angle, refraction, ellipsoid shape, terrain, and antenna masks, so it is a planning estimate rather than operational ephemeris.",
"inputSchema": {
"type": "object",
"required": [
"altitude_km",
"inclination_deg",
"raan_deg",
"initial_phase_deg",
"ground_latitude_deg",
"ground_longitude_deg",
"duration_seconds",
"step_seconds",
"minimum_elevation_deg"
],
"properties": {
"raan_deg": {
"type": "number",
"maximum": 360,
"minimum": -360,
"description": "Right ascension of ascending node relative to Greenwich at t=0."
},
"altitude_km": {
"type": "number",
"maximum": 100000,
"minimum": 100,
"description": "Circular altitude above a spherical Earth."
},
"step_seconds": {
"type": "integer",
"maximum": 3600,
"minimum": 10
},
"inclination_deg": {
"type": "number",
"maximum": 180,
"minimum": 0
},
"duration_seconds": {
"type": "integer",
"maximum": 172800,
"minimum": 10
},
"initial_phase_deg": {
"type": "number",
"maximum": 360,
"minimum": -360,
"description": "Argument of latitude at t=0."
},
"ground_latitude_deg": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"ground_longitude_deg": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"minimum_elevation_deg": {
"type": "number",
"maximum": 90,
"minimum": -5
}
},
"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.
0.004USDC≈ $0.004 USD
on Base · exact scheme
Pay 0.004 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 4000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "4000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"raan_deg": 15,
"altitude_km": 550,
"step_seconds": 30,
"inclination_deg": 53,
"duration_seconds": 43200,
"initial_phase_deg": 210,
"ground_latitude_deg": 52.52,
"ground_longitude_deg": 13.405,
"minimum_elevation_deg": 10
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$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": [
"altitude_km",
"inclination_deg",
"raan_deg",
"initial_phase_deg",
"ground_latitude_deg",
"ground_longitude_deg",
"duration_seconds",
"step_seconds",
"minimum_elevation_deg"
],
"properties": {
"raan_deg": {
"type": "number",
"maximum": 360,
"minimum": -360,
"description": "Right ascension of ascending node relative to Greenwich at t=0."
},
"altitude_km": {
"type": "number",
"maximum": 100000,
"minimum": 100,
"description": "Circular altitude above a spherical Earth."
},
"step_seconds": {
"type": "integer",
"maximum": 3600,
"minimum": 10
},
"inclination_deg": {
"type": "number",
"maximum": 180,
"minimum": 0
},
"duration_seconds": {
"type": "integer",
"maximum": 172800,
"minimum": 10
},
"initial_phase_deg": {
"type": "number",
"maximum": 360,
"minimum": -360,
"description": "Argument of latitude at t=0."
},
"ground_latitude_deg": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"ground_longitude_deg": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"minimum_elevation_deg": {
"type": "number",
"maximum": 90,
"minimum": -5
}
},
"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
- 2026-09-19 15:57Z
- Last indexed by Roundhouse
- 2026-09-25 05:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 05:46Z
- 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. 23 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 space.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=space.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://space.halowerk.com/v1/satellite-pass, 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.