Space Markets Index (SMI), published by Space Markets, Inc
Space Markets Index (SMI), published by Space Markets, Inc.: orbital launch activity from public data. Weekly 2026 launch series, per-launch records (rocket, mission, payloads, mass status) and SMI prints, as small JSON. Each read costs $0.01 test USDC via x402 on Base Sepolia (testnet). Data: GCAT (J. McDowell, planet4589.org), CC BY 4.0, modified by Space Markets. Not affiliated with or endorsed by SpaceX. Data only, not advice. Free: https://smx.space/smi-api/latest
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://smx.space/smi-api/launch/2026-221
| Category | Everything else |
|---|---|
| Provider host | smx.space |
| Networks | eip155:84532 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.01 | 188 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"id": "2026-221"
},
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"properties": {
"id": {
"description": "GCAT launch id YYYY-NNN, e.g. 2026-221 (listed on https://smx.space/smi/)",
"examples": [
"2026-221"
],
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"agency": {
"type": "string"
},
"attribution": {
"properties": {
"dataset": {
"type": "string"
},
"license": {
"type": "string"
},
"notice": {
"type": "string"
}
},
"type": "object"
},
"date_utc_gcat": {
"type": "string"
},
"id": {
"type": "string"
},
"mass_status": {
"type": "string"
},
"mission": {
"type": "string"
},
"payload_count": {
"type": "integer"
},
"payloads": {
"type": "array"
},
"rocket": {
"type": "string"
},
"schema_version": {
"type": "string"
}
},
"required": [
"schema_version",
"id",
"attribution"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}