What Is an Agent Handle? | ATXP
An agent handle is a persistent, portable identifier for an AI agent — analogous to a username, email address, or Venmo handle. It gives an agent a stable identity across services, enabling it to transact, communicate, and authenticate without human-managed credentials.
Why Agent Handles Matter for AI Agents
Every API key, account, and subscription on the internet was designed for a human. The implicit assumption in every login form, payment form, and credential system is that a person sits behind the request.
That assumption is breaking down. AI agents now operate for hours or days without human involvement — booking, querying, paying, and communicating on behalf of users or other systems. But the identity infrastructure hasn’t caught up. Today’s agents are forced to borrow human credentials: log in with the developer’s API key, pay with the developer’s credit card, and leave no persistent trace of who they were between sessions.
An agent handle changes the assumption. It gives the agent its own name in the system — one it carries across sessions, across services, and across the lifetime of its operation.
How Agent Handles Work
An agent handle functions as the root identity from which all other agent capabilities hang:
- Registration — The agent registers with an identity provider and receives a unique handle: a short, stable string that identifies it to other systems.
- Authentication — When the agent connects to a service, it presents its handle along with a cryptographic credential proving it owns that handle. The service verifies without requiring human login.
- Persistence — Unlike session tokens, an agent handle doesn’t expire at conversation end. The same agent returns a week later, presents the same handle, and is recognized.
- Portability — The handle works across all services that recognize the issuing identity provider, just as an email address works across services that accept email login.
The closest human analogy is an email address: a single identifier that works across services, can receive messages, authenticate to systems, and accumulate a reputation over time.
Agent Handles in ATXP
ATXP issues an agent handle as part of every agent account. One command — npx atxp — creates:
- A unique agent handle
- A payment method funded with IOU tokens for immediate use
- An
@atxp.emailaddress tied to the handle - Access to 14+ tools (image generation, LLM inference, web search, file storage, and more)
The handle persists across sessions. An agent can be shut down and restarted, and it picks up exactly where it left off — same identity, same balance, same tool access.
Try it: npx atxp — one command, no API key registration required.
Frequently Asked Questions
What is an agent handle?
An agent handle is a persistent, portable identifier for an AI agent. It gives the agent a stable name it can use across services to authenticate, transact, and communicate without relying on human-managed credentials for each interaction.
Can one agent have multiple handles?
One agent typically uses one handle — the same way a person typically has one email address for professional communication. Multiple handles for one agent are possible but create identity fragmentation. ATXP issues one handle per account by default.
What happens to an agent’s handle if I stop paying?
ATXP is pay-as-you-go with no subscription. An agent handle persists as long as the account exists. If the IOU token balance reaches zero, tool calls stop until topped up — but the handle and identity remain intact.