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Alter launches YC S25 platform for privileged access management of AI agents

·2026.10.21 15:42

Key point

The platform provides a credential vault, policy engine, and audit trail to enforce least-privilege access for AI agents across 140 integrations.

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Details

  • Alter is a YC S25 startup offering privileged access management (PAM) specifically for AI agents, solving the problem of shared, over-scoped credentials and lack of auditability.
  • The platform sits in the request path to authenticate, authorize, and log every API call, supporting 140 integrations including GitHub, Slack, and Google.
  • It enforces least privilege by assigning unique identities and scoped grants to each agent, with a default-deny policy engine that can require human approval for sensitive actions.
  • Credentials are stored in a dedicated vault and injected per request, ensuring agents never see the raw secrets, while a tamper-evident audit trail records every action for compliance and security reviews.
  • The system includes first-class integrations for LangChain, MCP, and AWS, and is currently in the process of achieving SOC 2 compliance.
securityinfrastructureai-agentscomplianceaccess-controlyc-s25
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