NASA NeoWs · Rate Limits
Nasa Neows Rate Limits
Rate limiting details for the NASA Near Earth Object Web Service API.
Nasa Neows Rate Limits is the machine-readable rate-limit profile for NASA NeoWs on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 3 rate-limit definitions.
Tagged areas include NASA, Asteroids, Near Earth Objects, Space, and Science.
3 Limits
NASAAsteroidsNear Earth ObjectsSpaceScienceOpen DataPlanetary Defense
Limits
IP address
The DEMO_KEY is shared across all unauthenticated users. Limits are applied per originating IP address rather than per key.
IP address
Daily ceiling for DEMO_KEY access, enforced per originating IP address. The hourly limit (30) will be reached before the daily cap (50) for sustained usage.
API key
Limits apply across all api.nasa.gov API calls made with the same registered key, not solely NeoWs requests. The feed endpoint is further constrained to a maximum 7-day date range per request.
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.