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Chain API

The Chain API provides standard REST endpoints for querying blockchain state — blocks, transactions, accounts, balances, validators, and token metadata.

Base URL

This is the Light Client Daemon (LCD) REST interface running on the primary validator node. All endpoints return JSON.

Authentication

All read endpoints are public. No API key or authentication is required for queries. Transactions must be signed client-side before broadcasting. See the SDK docs for signing helpers.

Rate Limits

For higher throughput, run your own node.

Common Patterns

Pagination

Most list endpoints support cursor-based pagination:

Error Responses

Errors return a standard structure:

Available Endpoints