Alter

Alter provides privileged access management designed for AI agents, helping organizations control how agents use credentials and act on behalf of users. Its platform places an authorization layer between agents and external services, checking requests against policy and recording each call.

Alter Vault stores credentials and injects them when needed, keeping tokens and API keys out of application code and prompts. The Policy Engine supports default-deny rules, scope restrictions, and checks down to individual parameters. Agent Identity gives each agent its own keys and permissions, while human-in-the-loop approvals can hold sensitive requests for review by a named person. Alter also offers tamper-evident audit records, revocation controls, and SIEM streaming to support security reviews and compliance work.

The platform connects with 138 providers, including Google, Slack, GitHub, Salesforce, Notion, and Linear. Alter offers an embeddable authorization widget through Alter Connect, end-user visibility and revocation through Wallet, and integrations for LangChain, MCP, and AWS.