Contracts API

Deploy and interact with smart contracts using Circle’s managed infrastructure, including event monitoring and contract templates.

Smart Contract Platform lets you ship onchain logic without writing deploy scripts, running your own indexer, or building tooling around contract calls.

Get started

API keys

Authenticate your requests with an API key.

Postman collection

Try the Contracts API with Circle’s Postman collection.

Webhooks

Set up webhook subscriptions for contract events.

Endpoint categories

Templates

Deploy ERC-20, ERC-721, and ERC-1155 contracts from prebuilt templates.

Deploy / Import

Deploy custom bytecode or import existing contracts.

View / Update

List, retrieve, and update managed contracts.

Interact

Query contract state and submit transactions.

Event Monitors

Subscribe to onchain events and read event logs.