Circle Agent Stack Gains Discovery API

August 6, 2026

Circle Agent Stack now offers a Discovery API that gives builders programmatic access to a curated discovery layer for agentic services. Developers can query the full Agent Marketplace catalog through a single public endpoint with no API key, authentication, or Circle account required. The feature lowers the barrier for discovering and integrating agent-based services into applications.

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Circle Agent Stack now gives builders programmatic access to a curated discovery layer for agentic services. With the new Discovery API, builders can query the full Agent Marketplace catalog through a single public endpoint, with no API key, auth, or Circle account required. https://t.co/zE5rC26vKax.com ↗

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