---
title: "CIBA · Highflame Glossary"
description: "Client-Initiated Backchannel Authentication: an out-of-band flow that pauses a sensitive agent action for explicit, attributable human approval."
doc_version: "0.1.0"
last_updated: "2026-07-27T05:42:48.105Z"
canonical: "https://www.highflame.com/glossary/ciba"
---

[Home](/index.md)·[Glossary](/glossary.md)·CIBA

# CIBA

Client-Initiated Backchannel Authentication: an out-of-band flow that pauses a sensitive agent action for explicit, attributable human approval.

Part of [the Agent Control Fabric](/platform.md): Highflame's identity, policy, and enforcement substrate for AI agents.

[Book a demo](/contact.md) [All terms](/glossary.md)

## Keep exploring the glossary.

[

### Code agent

Autonomous software that reads code, runs commands, calls tools, and changes systems on a developer's behalf. Securing one means controlling what it can access while it runs, and proving afterward what it did.

Read →](/glossary/code-agent.md)[

### Confused deputy

An attack where a low-privilege agent tricks a higher-privilege one into acting on its behalf. Scope attenuation prevents it: a sub-agent provably cannot exceed its parent's authority.

Read →](/glossary/confused-deputy.md)[

### Delegated authority

The model where an agent acts on behalf of a human or another agent, holding strictly less authority than the principal that authorized it, and provably distinct from that principal.

Read →](/glossary/delegated-authority.md)[

### Delegation depth

How many on-behalf-of hops a credential sits from its original human authorizer. Highflame enforces depth as a first-class policy primitive.

Read →](/glossary/delegation-depth.md)[

### DPoP

Demonstrating Proof-of-Possession (RFC 9449): binds a token to a proof key so a stolen token is inert without it.

Read →](/glossary/dpop.md)[

### Enterprise Managed Authorization (EMA)

An MCP extension that lets a company's identity provider decide, through corporate SSO, which MCP servers an agent may connect to. It governs admission, not what the agent does once inside.

Read →](/glossary/ema.md)

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