Agent Nonce was built because every AI agent deployment we encountered had the same unsolved problem: how do you give an agent the credentials it needs to act, without those credentials becoming a permanent liability?
When AI agents emerged as a production pattern in 2024, infrastructure and security teams quickly realized that human authentication models don't transfer cleanly. Human users authenticate once and maintain a session. Agents need credentials scoped to a specific task, for a specific duration, and then those credentials should cease to exist.
The status quo — hardcoding API keys into system prompts, creating long-lived service accounts for agents, or passing secrets through environment variables in agent runtimes — creates credential exposure surfaces that are fundamentally incompatible with secure AI deployment.
One leaked conversation log. One misconfigured logging pipeline. One prompt injection attack. That's all it takes to expose credentials that live forever.
Agent Nonce applies the principle of least privilege to AI agent credentials: every nonce is scoped to exactly what the agent needs to do, valid only as long as necessary, and cryptographically destroyed when it expires.
We drew inspiration from several established security patterns: AWS STS temporary credentials, OIDC workload identity federation, and Kubernetes's projected service account tokens. The insight is that the security community has already solved ephemeral credentials for many contexts — we built the service that applies those patterns natively to AI agent workflows.
Credentials that don't exist can't be stolen. We optimize for credential lifetime measured in seconds, not days.
Every nonce is traceable to a specific agent, task, and timestamp. Security teams need answers, not guesses.
We enforce scope at issuance. An agent that only needs to read can't be granted write access — even if it asks.
We make the secure choice the default. You should have to opt out of security, not opt in to it.
A nonce — "number used once" — is a cryptographic term for a value that is only used a single time. It's a foundational concept in protocol security: prevent replay attacks, ensure freshness, and guarantee that a credential can't be recycled. That's exactly the property we're bringing to AI agent credentials.
Every token Agent Nonce issues is tied to a single authorized use context. It expires. It's tracked. And once it's gone, it's gone.
We're in early access. If you're building AI agents and hitting credential security roadblocks, we'd like to talk. Reach us at hello@agentnonce.com.
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