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Activity API

Read account history and decoded Stellar events.

Assets API

Read balances, token holders and the token registry.

Webhooks

Receive signed events at your HTTPS endpoint.

RPC

Query state, simulate and submit transactions.

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Get started

Quickstart

Sign up, copy your key and make your first call.

Set up with an agent

One prompt for Claude Code, Cursor or Codex.

Plans and pricing

Testnet is free. Credits are for Mainnet.
Sign up at app.lumeus.dev to get a Testnet key in under a minute. No card is needed, and Testnet is free.

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Try it

With a Testnet key, one request lists the three largest XLM holders on Testnet:
Output
The quickstart takes you from sign-up to your first Activity, Assets and RPC calls, in curl, JavaScript and Python, in about five minutes.

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Base URLs

Activity, Assets and RPC share one API key per network. Webhooks uses a separate key. All four accept Authorization: Bearer <key>. See authentication.

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Plans

Build and test on Testnet for free: up to 10,000 requests a day, reset at 00:00 UTC, on every plan (unlimited on Enterprise). Credits are for Mainnet. Every workspace starts on Free, with 250,000 Mainnet credits a month and one Testnet webhook endpoint. Starter, Growth and Scale add credits, higher rate limits and webhooks on both networks. Upgrade any time in the dashboard. See plans and billing.

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History and retention

Activity covers the full history of supported events, back to genesis on Mainnet. RPC keeps about seven days of recent ledgers; use the Activity API for anything older. See event coverage and health checks.