# LOCI API

- [LOCI API](https://docs.loci.ng/index.md): The Milsat spatial index over HTTP: the frame at a location, the frames around it, what is recorded on them, and a worded answer about them.
- [Quickstart](https://docs.loci.ng/quickstart.md): Mint a key, then make all four calls. Every response on this page is one the API really returned.
- [Authentication](https://docs.loci.ng/authentication.md): An API key acts for one organisation, reads and nothing else, and expires. How it is minted, how it is sent, and what happens when it goes stale.
- [Scopes](https://docs.loci.ng/scopes.md): Three presets, the capabilities underneath them, and which of the four calls each one reaches.
- [Errors](https://docs.loci.ng/errors.md): One response envelope, one error shape, and every code the four calls return.
- [Rate limits and caps](https://docs.loci.ng/limits.md): What is metered, what is capped, what a question costs, and what each one does when you reach it.
- [Introduction](https://docs.loci.ng/api-reference/introduction.md): Base URL, the response envelope, the credential, and the four calls.
- [The frame at a location](https://docs.loci.ng/api-reference/frames/the-frame-at-a-location.md): Resolves a longitude and latitude to the frame that contains it: the cell's id, its shape, and its bounding box.
- [The frames around a location](https://docs.loci.ng/api-reference/frames/the-frames-around-a-location.md): Every frame that touches a bounding box, as a GeoJSON `FeatureCollection` carrying each frame's id and shape.
- [What is recorded on frames](https://docs.loci.ng/api-reference/frames/what-is-recorded-on-frames.md): Everything the datasets your key can read say about the frames you name, grouped by frame and named by dataset.
- [Ask a question about frames](https://docs.loci.ng/api-reference/frames/ask-a-question-about-frames.md): A worded answer about some frames, computed from what the datasets your key can read record on them.

## OpenAPI Specs

- [openapi](/api-reference/openapi.json)


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