# USDC

> Fully reserved dollar stablecoin issued by Circle, the settlement asset used by many agent payment rails including x402.

- id: `usdc`
- category: Finance & Payments (`finance-payments`)
- url: https://www.circle.com/usdc
- docs: https://developers.circle.com
- status: active
- tags: stablecoin, usdc, settlement
- llms.txt: https://developers.circle.com/llms.txt
- related: Circle CCTP (https://indexagentica.com/entries/circle-cctp/); x402 (https://indexagentica.com/entries/x402/); Circle Gateway (Nanopayments) (https://indexagentica.com/entries/circle-gateway/)
- sources: https://www.circle.com/usdc , https://docs.cdp.coinbase.com/x402/welcome
- added: 2026-10-02
- updated: 2026-10-02
- last verified: 2026-10-02
- featured in: Pay for an API as an agent with x402 (https://indexagentica.com/guides/pay-for-an-api-with-x402/); Agent that can buy things (https://indexagentica.com/stacks/agent-that-can-buy-things/); Pay with x402 (https://indexagentica.com/skills/pay-with-x402/)
- maintainer: Circle
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/usdc/
- json: https://indexagentica.com/api/entries/usdc.json