Upcoming rocket launches with countdown + go/no-go API

Next orbital launches worldwide from Launch Library 2, each tagged with a live countdown and seconds-to-launch, a normalized go/tentative/scheduled status, weather probability, rocket, orbit, provider and pad, plus the single next launch surfaced. Answers 'what rocket launches next', 'upcoming SpaceX/ULA/CNSA launches', 'countdown to the next launch'.

Price$0.01per request

MethodPOST

Route/v1/science/upcoming-launches

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache1800s public

sciencespacelaunchrocketcountdownspaceflightschedulelaunch-library

API URLhttps://x402.hexl.dev/v1/science/upcoming-launches

Integration docs

Example request

{
  "limit": 3
}

Example response

{
  "totalUpcoming": 361,
  "returned": 3,
  "nextLaunch": {
    "id": "cfff5e89-af2e-46b1-9446-7b0f18de4ef7",
    "name": "Falcon 9 Block 5 | Starlink Group 10-43",
    "net": "2026-06-04T10:26:30Z",
    "countdown": "imminent/now",
    "secondsToLaunch": 0,
    "status": "Success",
    "goStatus": "go",
    "weatherProbabilityPct": 95,
    "provider": "SpaceX",
    "rocket": "Falcon 9",
    "orbit": "Low Earth Orbit",
    "missionType": "Communications",
    "pad": "Space Launch Complex 40",
    "location": "Cape Canaveral SFS, FL, USA"
  },
  "launches": [
    {
      "id": "cfff5e89-af2e-46b1-9446-7b0f18de4ef7",
      "name": "Falcon 9 Block 5 | Starlink Group 10-43",
      "net": "2026-06-04T10:26:30Z",
      "countdown": "imminent/now",
      "secondsToLaunch": 0,
      "status": "Success",
      "goStatus": "go",
      "weatherProbabilityPct": 95,
      "provider": "SpaceX",
      "rocket": "Falcon 9",
      "orbit": "Low Earth Orbit",
      "missionType": "Communications",
      "pad": "Space Launch Complex 40",
      "location": "Cape Canaveral SFS, FL, USA"
    },
    {
      "id": "5db6b0f1-446d-4209-824f-1187e1b6d212",
      "name": "Long March 6A | SpaceSail Polar Group #11",
      "net": "2026-06-04T11:39:00Z",
      "countdown": "imminent/now",
      "secondsToLaunch": 0,
      "status": "Success",
      "goStatus": "go",
      "weatherProbabilityPct": null,
      "provider": "China Aerospace Science and Technology Corporation",
      "rocket": "Long March 6A",
      "orbit": "Polar Orbit",
      "missionType": "Communications",
      "pad": "Launch Complex 9A",
      "location": "Taiyuan Satellite Launch Center, People's Republic of China"
    },
    {
      "id": "3dd21d77-a37d-419c-86fb-8591fe256583",
      "name": "Long March 8 | Unknown Payload",
      "net": "2026-06-05T06:30:00Z",
      "countdown": "6h 15m",
      "secondsToLaunch": 22550,
      "status": "Go",
      "goStatus": "go",
      "weatherProbabilityPct": null,
      "provider": "China Aerospace Science and Technology Corporation",
      "rocket": "Long March 8",
      "orbit": "Unknown",
      "missionType": "Unknown",
      "pad": "Commercial LC-1",
      "location": "Wenchang Space Launch Site, People's Republic of China"
    }
  ]
}

Input schema

{
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 25,
      "default": 8
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}