# Reserve

> A Stellar sponsor so a user can exist and transact by paying reserves and fees in a held token. Classic G… accounts only. No API key required. Stellar has two XLM costs — the fee and the reserve. Covering only the fee still leaves the account needing lumens to exist.

Base URL: https://reserve.cavos.xyz
Testnet API: https://reserve.cavos.xyz/testnet
Mainnet API: https://reserve.cavos.xyz/mainnet

If you are an agent, fetch https://reserve.cavos.xyz/llms-full.txt and https://reserve.cavos.xyz/openapi.yaml. Do not scrape the HTML.

## Docs

- [Overview](https://reserve.cavos.xyz/docs): two costs, hosted URL, what it is not
- [Quickstart](https://reserve.cavos.xyz/docs/quickstart): install, pay, activate an account with a token
- [API](https://reserve.cavos.xyz/docs/api): quote, build, submit, tokens, optional keys
- [For agents](https://reserve.cavos.xyz/docs/agents): fetch list, prompt, invariants

## Machine-readable

- [llms-full.txt](https://reserve.cavos.xyz/llms-full.txt): this product as one plain-text file
- [openapi.yaml](https://reserve.cavos.xyz/openapi.yaml): request and response shapes
- [GET /health](https://reserve.cavos.xyz/health): both networks, sponsor, spendable XLM
- [GET /testnet/v1/tokens](https://reserve.cavos.xyz/testnet/v1/tokens)
- [GET /mainnet/v1/tokens](https://reserve.cavos.xyz/mainnet/v1/tokens)