Keycard

Keycard is a provider of identity infrastructure for managing and securing access to AI agent tools and large language model capabilities. The platform offers a system for authorizing tool calls based on agent identity, task, and user context, issuing scoped, just-in-time credentials and logging every access decision. This enables developers to build AI agents with secure delegation patterns while giving security teams full visibility into how AI tools are being accessed and used. The infrastructure supports building secure AI experiences with dynamic access controls, facilitating trusted interactions through task-scoped tokens and federated authentication. Keycard addresses the emerging security challenge of AI agents that need to access external tools, APIs, and data sources by providing granular access control that limits what each agent can do based on its specific task and the user who initiated it. The system ensures that AI agents operate with least-privilege access, reducing the risk of unauthorized actions or data exposure. Founded in 2025 and headquartered in Wilmington, United States, Keycard has raised 8 million at the Series A stage with investors including Andreessen Horowitz, Boldstart Ventures, Acrew Capital, Mantis VC, Tapestry VC, Essence VC, Exceptional Capital, Modern Technical Fund, and Vermilion Cliffs Ventures.