2s
Search confirmed exoplanets in the NASA Exoplanet Archive (~6,000, updated weekly — past any LLM training cutoff). Filter by name (planet, partial), hostStar (partial), discoveryYear, or method (e.g. "Transit", "Radial Velocity", "Microlensing"). Each planet: name, host star + how many stars/planets in the system, discovery method/year/facility, orbital period, semi-major axis, radius (Earth radii), mass (Earth masses), equilibrium temperature, insolation; host-star spectral type/temperature/radius/mass; distance in parsecs + light-years; and RA/dec. Astronomy, habitability research, science education. Public-domain NASA data.
SearchLiveeip155:8453Exactvia cdp
Public-recordsIdentifiersAi-agentsUs-gov-datax402
Settlements · 30d
1,178↑ 64%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$15.85
Verified settled volume
A floor: summed over 5,000 of 36,082 verified settlements.
$0.0014
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 2026-06-18 05:44Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5The 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.
{
"error": "PAYMENT-SIGNATURE required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
"amount": "3600",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "3600",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://2s.io/api/space/exoplanet",
"tags": [
"public-records",
"identifiers",
"ai-agents",
"us-gov-data",
"x402",
"upto-billing",
"ai-gateway",
"agent-infrastructure"
],
"iconUrl": "https://2s.io/icon-512.png",
"mimeType": "application/json",
"description": "Search confirmed exoplanets in the NASA Exoplanet Archive (~6,000, updated weekly — past any LLM training cutoff). Filter by name (planet, partial), hostStar (partial), discoveryYear, or method (e.g. \"Transit\", \"Radial Velocity\", \"Microlensing\"). Each planet: name, host star + how many stars/planets in the system, discovery method/year/facility, orbital period, semi-major axis, radius (Earth radii), mass (Earth masses), equilibrium temperature, insolation; host-star spectral type/temperature/radius/mass; distance in parsecs + light-years; and RA/dec. Astronomy, habitability research, science education. Public-domain NASA data.",
"serviceName": "2s"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "Kepler-22 b"
}
},
"output": {
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"meta": {
"type": "object",
"properties": {
"query": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"limit": {
"type": "integer"
},
"method": {},
"hostStar": {},
"discoveryYear": {}
}
}
}
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"hostStar": {
"type": "string"
},
"massEarth": {
"type": "number"
},
"radiusEarth": {
"type": "number"
},
"discoveryYear": {
"type": "integer"
},
"discoveryMethod": {
"type": "string"
},
"distanceParsecs": {
"type": "number"
},
"equilibriumTempK": {
"type": "integer"
},
"orbitalPeriodDays": {
"type": "number"
},
"distanceLightYears": {
"type": "number"
}
}
}
},
"total": {},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
},
"example": {
"ok": true,
"meta": {
"query": {
"name": "Kepler-22 b",
"limit": 20,
"method": null,
"hostStar": null,
"discoveryYear": null
}
},
"items": [
{
"name": "Kepler-22 b",
"hostStar": "Kepler-22",
"massEarth": 9.1,
"radiusEarth": 2.1,
"discoveryYear": 2011,
"discoveryMethod": "Transit",
"distanceParsecs": 194.64,
"equilibriumTempK": 279,
"orbitalPeriodDays": 289.86,
"distanceLightYears": 634.8
}
],
"total": null,
"source": {
"url": "https://exoplanetarchive.ipac.caltech.edu/",
"license": "Public domain (NASA Exoplanet Science Institute / Caltech).",
"provider": "NASA Exoplanet Archive (Planetary Systems table)"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"const": "GET"
},
"queryParams": {
"properties": {
"name": {
"type": "string",
"description": "Planet name, partial match (e.g. \"Kepler-22 b\", \"TRAPPIST-1\")."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 100,
"minimum": 1
},
"method": {
"type": "string",
"description": "Discovery method, e.g. \"Transit\", \"Radial Velocity\"."
},
"hostStar": {
"type": "string",
"description": "Host star name, partial match."
},
"discoveryYear": {
"type": "integer",
"maximum": 2030,
"minimum": 1989
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"meta": {
"type": "object",
"properties": {
"query": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"limit": {
"type": "integer"
},
"method": {},
"hostStar": {},
"discoveryYear": {}
}
}
}
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"hostStar": {
"type": "string"
},
"massEarth": {
"type": "number"
},
"radiusEarth": {
"type": "number"
},
"discoveryYear": {
"type": "integer"
},
"discoveryMethod": {
"type": "string"
},
"distanceParsecs": {
"type": "number"
},
"equilibriumTempK": {
"type": "integer"
},
"orbitalPeriodDays": {
"type": "number"
},
"distanceLightYears": {
"type": "number"
}
}
}
},
"total": {},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.00144USDC≈ $0.00144 USD
on Base · exact scheme
Pay 0.00144 USDC on Base to 0x2b6D…C32C5. The signed payment is good for 1 minute.
- Paid to
- 0x2b6D…C32C5
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 1440 smallest units
1440units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- TW6nta…cyWhn
- Token contract
- EPjFWd…TDt1v
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
"amount": "1440",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "1440",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "Kepler-22 b"
}
},
"output": {
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"meta": {
"type": "object",
"properties": {
"query": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"limit": {
"type": "integer"
},
"method": {},
"hostStar": {},
"discoveryYear": {}
}
}
}
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"hostStar": {
"type": "string"
},
"massEarth": {
"type": "number"
},
"radiusEarth": {
"type": "number"
},
"discoveryYear": {
"type": "integer"
},
"discoveryMethod": {
"type": "string"
},
"distanceParsecs": {
"type": "number"
},
"equilibriumTempK": {
"type": "integer"
},
"orbitalPeriodDays": {
"type": "number"
},
"distanceLightYears": {
"type": "number"
}
}
}
},
"total": {},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
},
"example": {
"ok": true,
"meta": {
"query": {
"name": "Kepler-22 b",
"limit": 20,
"method": null,
"hostStar": null,
"discoveryYear": null
}
},
"items": [
{
"name": "Kepler-22 b",
"hostStar": "Kepler-22",
"massEarth": 9.1,
"radiusEarth": 2.1,
"discoveryYear": 2011,
"discoveryMethod": "Transit",
"distanceParsecs": 194.64,
"equilibriumTempK": 279,
"orbitalPeriodDays": 289.86,
"distanceLightYears": 634.8
}
],
"total": null,
"source": {
"url": "https://exoplanetarchive.ipac.caltech.edu/",
"license": "Public domain (NASA Exoplanet Science Institute / Caltech).",
"provider": "NASA Exoplanet Archive (Planetary Systems table)"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"const": "GET"
},
"queryParams": {
"properties": {
"name": {
"type": "string",
"description": "Planet name, partial match (e.g. \"Kepler-22 b\", \"TRAPPIST-1\")."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 100,
"minimum": 1
},
"method": {
"type": "string",
"description": "Discovery method, e.g. \"Transit\", \"Radial Velocity\"."
},
"hostStar": {
"type": "string",
"description": "Host star name, partial match."
},
"discoveryYear": {
"type": "integer",
"maximum": 2030,
"minimum": 1989
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-18 05:44Z
- Last indexed by Roundhouse
- 2026-07-17 19:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 02:45Z
- x402 version
- 2
- Max timeout
- 60s
- 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
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.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service 2s 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=2s' 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://2s.io/api/space/exoplanet, 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.