MCP Tool
nova.history_get
For navigation, history, and controlled page changes, an agent uses this public tool to check the state or evidence for "History Snapshot". It explains which current signal can be used as evidence and when a follow-up step needs a fresh target check.
Canonical reference for a public MCP tool name.
- Type
- MCP tool
- Family
- Navigation & SPA Routing
- Effect
- read-only
- Status
- Explained
- Path
- 3.11
Purpose
What this entry explains
What it does
nova.history_get
An agent uses this tool to check the state or evidence for "History Snapshot". It belongs to navigation, history, and controlled page changes; agents should combine it with current discovery, target awareness, and the visible result.
Use when
- Use this entry when an agent needs to check the state or evidence for "History Snapshot" for navigation, history, and controlled page changes.
- 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
An agent needs to change visible state in navigation, history, and controlled page changes without guessing target or result from an earlier session.
The agent starts with nova.navigate, reads the current response or reference, and only then chooses the concrete next tool.
Change only the confirmed target, then check visible state and stop on mismatch.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
targetId
Target reference for a tab or browser context. Confirm it against current tab state before use.
| Response field | Explanation |
|---|---|
currentIndex | Response field named by the catalog source. Treat it as current evidence for the next decision. |
entryId | Identifier or reference value. Do not guess it from memory; read it from the current response. |
transitionType | Response field named by the catalog source. Treat it as current evidence for the next decision. |
canGoBack | Response field named by the catalog source. Treat it as current evidence for the next decision. |
canGoForward | Response field named by the catalog source. Treat it as current evidence for the next decision. |
Safety
Boundary before execution
Reads current state or evidence. It should not be treated as permission to act without a fresh next-step check.
Use the response as current evidence, then choose a more specific next tool only after target, scope, and freshness are clear.
For humans, this entry explains what an agent reads in navigation, history, and controlled page changes and which current signal should be checked before trusting the result.
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.
read_current_state
Reads current state, response signals, or evidence without treating that alone as permission for a follow-up action.
Use the signal as current evidence and re-check target, scope, and visible state before any follow-up action.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.