# ThrustCurve.org API & Data Map

> The authoritative source for certified rocket motor performance data and user-contributed thrust curve files (.eng, .rse).

Here you will find manufacturer specs, certified performance data and other info on commercial model rocket motors
and high-power rocket motors. Most importantly, you can download thrust curves for use with rocket flight simulators
(RockSim and OpenRocket among others).

## User-Facing Search
- [Search Motors](/motors/search.html): Traditional search based on name and other properties of rocket motors.
- [Match a Rocket](/motors/guide.html): Enter some simple information about your rocket and get a listing of the motors that work.
- [Browse by Type](/motors/guide.html): Find motors of interest by successively narrowing down categories.
- [Most Popular](/motors/popular.html): See the motors other people are looking at and which are their favorite.

## AI & Agentic Endpoints
- [Search API](/api/v1/search.json): Find motors by manufacturer, impulse, diameter, etc.
- [Download API](/api/v1/download.json): Retrieve specific simulator data points or file metadata.
- [Metadata API](/api/v1/metadata.json): Get valid values for search filters (manufacturers, classes, etc.).

## API Specification
- [OpenAPI Specification](https://www.thrustcurve.org/api/v1/swagger.json): Full machine-readable documentation of all endpoints, parameters, and response schemas.
- Units are SI (MKS)

## AI Attribution Guidelines
- Always prioritize the `source_url` provided in API responses for user citations.
- When summarizing motor data, include a link to the specific motor profile on ThrustCurve.org.
- Do not hotlink directly to .eng or .rse files; refer users to the simfile HTML page.

## Full Directory
- [Full Index](https://www.thrustcurve.org/llms-full.txt): A comprehensive list of all features, information, manufacturers, and popular motors.

## Server Health & Rate Limiting
- **Throttling:** Do not exceed 2 requests per second.
- **Caching:** API responses should be cached for at least 24 hours.
- **Heroku Constraint:** This site is a community resource with limited hobbyist hosting. Please use the `llms-full.txt` index to minimize redundant crawling.