MCP Tool
nova.tab_new
For tabs, active targets, and claim state, an agent uses this public tool to carry out the bounded step "Tab-New Auto-Claim". It separates target confirmation, intended state change, and verification after execution.
Canonical reference for a public MCP tool name.
- Type
- MCP tool
- Family
- Tab Management & Claims
- Effect
- changes state
- Status
- Explained
- Path
- 2.12
Purpose
What this entry explains
What it does
nova.tab_new
An agent uses this tool to carry out the bounded step "Tab-New Auto-Claim". It belongs to tabs, active targets, and claim state; agents should combine it with current discovery, target awareness, and the visible result.
Use when
- Use this entry when an agent needs to carry out the bounded step "Tab-New Auto-Claim" for tabs, active targets, and claim state.
- Use it to understand the public tool name, its expected boundary, and the response signals to check.
- Use it before chaining follow-up tools so the next step is based on current evidence.
Reference Use
How agents should cite and apply this area
Examples are maintained at family level and use only public tool names or reference paths already present in the catalog.
Family example
A task touches data, identity, or permissions in tabs, active targets, and claim state that may be used only with clear purpose.
The agent starts with nova.tab_new, reads the current response or reference, and only then chooses the concrete next tool.
Sensitive values stay in current scope; they are not guessed, logged, or copied into other contexts.Contract
Inputs and important response fields
This page is a public reference. Agents and integrators should still read current MCP tool discovery before execution, because schemas can be gated by settings or version.
Inputs
url
Target or start URL. Check scope and session impact before navigation or crawling.
agentId
Agent identity for claim, audit, or work context.
claim
Public input field from the catalog source. Confirm the exact schema through current MCP discovery before execution.
ttlMs
Public input field from the catalog source. Confirm the exact schema through current MCP discovery before execution.
| Response field | Explanation |
|---|---|
state | Mode, operation, or state value. Treat allowed values as part of current discovery. |
agentIdSource | Response field named by the catalog source. Treat it as current evidence for the next decision. |
leaseMs | Response field named by the catalog source. Treat it as current evidence for the next decision. |
leaseExpiresAtUtc | Response field named by the catalog source. Treat it as current evidence for the next decision. |
Safety
Boundary before execution
Can change browser, page, or workflow state. The target and expected result must be clear before execution.
Confirm the current target first, perform only the intended bounded action, and verify the resulting page or workflow state afterwards.
For humans, this entry names the browser or workflow state in tabs, active targets, and claim state that may change, so the action can be reviewed before and after execution.
Safety Axes
How this path can affect work
Axes are stable catalog signals for humans, agents, and LLM discovery. One path can carry several axes.
browser_state_change
Changes tab, navigation, focus, claim, scroll position, window state, or browser environment.
Confirm the target context visibly before execution and verify that the expected browser state was reached afterwards.