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// Glossary

The vocabularyof running agents.

This category invented a lot of words quickly, and plenty of them get used to mean different things. These are the definitions we use, written to be useful whether or not you ever buy anything.

// Plain definitions, written to stand on their own without a product pitch.

// Cross-cutting

Protocol and platform

Terms that apply across both products and the wider agent tooling ecosystem.

Model Context Protocol (MCP)

Full entry

The open protocol that lets an AI agent discover and call external tools in a standard way.

Control plane

A coordination layer that carries state and control signals without executing the work itself.

MCP tools

Full entry

The named capabilities an MCP server exposes, discovered at connect time and called during a session without bespoke integration code.

MCP server

A service that exposes a set of tools an MCP-compatible agent can discover and call.

MCP memory server

Full entry

A service exposing memory operations as MCP tools, so any compatible agent can write and retrieve context with no per-tool integration.

Context engineering

Full entry

Deciding what an agent has in front of it for a task: what to retrieve, what to leave out, and where it came from.

AI driving AI

Full entry

One agent supervising or orchestrating another, answering its decisions through the same interfaces a person would use.

Interactive CLI vs Agent SDK

Full entry

Two ways to reach the same model: a supervised session under the local subscription, or a programmatic entry point billed as metered API usage.

Device flow

A sign-in pattern where a terminal authorises through a browser rather than a pasted token.

Seat

The per-member, per-product grant that gives someone access to a product.

Tenant isolation

Keeping one organization data unreachable from another, enforced in storage rather than application code.

// Virex Remote

Agent oversight

Terms for watching and steering a coding agent that is running on a machine you own.

Permission gates

Full entry

The pause where a coding agent asks before taking an action, and waits until somebody answers.

Plan mode

Full entry

A working mode where an agent proposes what it intends to do and waits for approval before acting on any of it.

AI coding agent observability

Full entry

Seeing what a running agent is doing, what it is blocked on, and what it did afterwards, at the level of sessions and decisions.

Async coding agents

Full entry

Agents that keep working when nobody is watching, which makes their blocking moments the thing that decides whether the time gets used.

Session

One continuous run of a coding agent on a machine, with its own activity and decisions.

Message injection

Sending an instruction into a session that is already running.

Remote control for AI coding agents

Full entry

Following and steering a session running on your own machine from a different device, including answering what it stops on.

Session context injection

Full entry

Putting a correction or a missing constraint into a running session, so the agent adjusts without the run being restarted.

Agent fleet

Full entry

Every session an organization has running at once, treated as one thing to observe rather than as unrelated processes.

Interrupt

Stopping a session current activity immediately, without answering its pending question.

Daemon

The lightweight local process that reports session activity and maintains the live link.

// Where to go next

Once the words make sense.

Start from a problem

The use-case pages are organised by the situation you are in rather than by product name.

Start from your team shape

The solutions pages cover teams, enterprise, agencies, and solo developers separately.

Start from your tools

The integrations directory covers which coding tools work with which product.

Definitions are free. So is deciding later.

When you are ready, an organization, a subscription, and one seat is the whole setup.