# io.github.AetherAI3/agent-browser (pypi · aether-browser)

Self-hosted Chrome for AI agents, with a live noVNC view a human can take over.

- Trust score: 76/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- npm · `aether-browser`: 89/100, [markdown](https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser.md), [page](https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser)
- pypi · `aether-browser`: 76/100 (this document), [markdown](https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser-2.md), [page](https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser-2)

## Channel facts

- Registry: `pypi`
- Package: `aether-browser`
- Version: `0.2.2`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised native-build step with no shell scripting around it.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 35/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 15 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 85/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 654 tokens (~72/item across 9 items; 9 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 53/100
  - Stability observed for 16 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the io.github.AetherAI3/agent-browser MCP server?

io.github.AetherAI3/agent-browser runs locally as a PyPI package, launched with uvx aether-browser. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add aetherai3-agent-browser -- uvx aether-browser
```

### Cursor

```json
{
  "mcpServers": {
    "aetherai3-agent-browser": {
      "command": "uvx",
      "args": [
        "aether-browser"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "aetherai3-agent-browser": {
      "command": "uvx",
      "args": [
        "aether-browser"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add aetherai3-agent-browser -- uvx aether-browser
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "aetherai3-agent-browser": {
      "type": "local",
      "command": [
        "uvx",
        "aether-browser"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add aetherai3-agent-browser --command uvx --arg aether-browser
```

### Hermes

```yaml
mcp_servers:
  aetherai3-agent-browser:
    command: "uvx"
    args: ["aether-browser"]
```

### Netclaw

```json
{
  "McpServers": {
    "aetherai3-agent-browser": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "aether-browser"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add aetherai3-agent-browser -t stdio -c uvx -a aether-browser
```

### Other

```json
{
  "mcpServers": {
    "aetherai3-agent-browser": {
      "command": "uvx",
      "args": [
        "aether-browser"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-19 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 72, +3)

- [functional improvement] Stability: unverified → 0.27

### 2026-09-04 (score 69)

First indexed and scored.

## MCP tools (9)

### `browser_open` (~60 tokens)

Start the one headed Chrome session and return the live view URL. Give that URL to the human: they can watch this exact session, and take over in it, while you drive. Safe to call twice -- it reuses the session that is already open.

### `browser_navigate` (~55 tokens)

Navigate the session to an http(s) URL and return the page title, final URL and readable text. The server validates the destination and refuses blocked address classes.

Input parameters:

- `url` (string, required): Absolute http(s) URL to open.

### `browser_read` (~81 tokens)

Read the current page: title, URL, readable text and a bounded accessibility tree. Prefer this over a screenshot -- it is structure, not pixels, and it does not spend a vision step unless you ask for the image.

Input parameters:

- `include_screenshot` (boolean): Also return the PNG as base64. Costs one vision step from the session budget. Default false.

### `browser_click` (~61 tokens)

Click a CSS selector, or an x/y point in the viewport. Provide one, not both.

Input parameters:

- `selector` (string): CSS selector to click.
- `x` (integer): Viewport x coordinate.
- `y` (integer): Viewport y coordinate.

### `browser_type` (~96 tokens)

Type text into a CSS selector, or at an x/y point. Text is sent byte for byte. Do not use this for a secret a human should enter -- ask them to take over in the live view instead.

Input parameters:

- `selector` (string): CSS selector to type into.
- `text` (string, required): Text to type.
- `x` (integer): Viewport x coordinate.
- `y` (integer): Viewport y coordinate.

### `browser_press` (~89 tokens)

Press one allowlisted key or combination. Allowed: Enter, Escape, Tab, Backspace, Delete, Space, ArrowUp, ArrowDown, ArrowLeft, ArrowRight, Home, End, PageUp, PageDown, Control+A, Control+Z, Control+Shift+Z, Meta+A, Meta+Z, Meta+Shift+Z.

Input parameters:

- `key` (string, required): Key to press.

### `browser_scroll` (~48 tokens)

Scroll the page by a nonzero pixel delta.

Input parameters:

- `delta_x` (integer): Horizontal pixels. Positive scrolls right.
- `delta_y` (integer): Vertical pixels. Positive scrolls down.

### `browser_status` (~38 tokens)

Report whether the runtime is up, whether a session is open, how many vision steps remain, and the live view URL to hand to a human.

### `browser_close` (~35 tokens)

End the session and release the browser. Idempotent. Call this when the task is finished so the single session slot is free.

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser-2#diagnostics

## Score history

- 2026-09-20: 76
- 2026-09-19: 76
- 2026-09-18: 75
- 2026-09-17: 75
- 2026-09-16: 74
- 2026-09-15: 74
- 2026-09-14: 73
- 2026-09-13: 73
- 2026-09-12: 72
- 2026-09-11: 69
- 2026-09-10: 69
- 2026-09-09: 69
- 2026-09-08: 69
- 2026-09-07: 69
- 2026-09-06: 69
- 2026-09-05: 69
- 2026-09-04: 69

## Common questions

### What is the io.github.AetherAI3/agent-browser MCP server?

io.github.AetherAI3/agent-browser is an MCP server listed in the public MCP registry as io.github.AetherAI3/agent-browser. Self-hosted Chrome for AI agents, with a live noVNC view a human can take over. This page covers its PyPI package (aether-browser).

### Is the io.github.AetherAI3/agent-browser MCP server safe to use?

io.github.AetherAI3/agent-browser scores 76 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the io.github.AetherAI3/agent-browser MCP server expose?

io.github.AetherAI3/agent-browser exposes 9 tools: browser_open, browser_navigate, browser_read, browser_click, browser_type, and 4 more. Their descriptions and schemas cost roughly 563 tokens of context every time the server is loaded.

### Is the io.github.AetherAI3/agent-browser MCP server still maintained?

io.github.AetherAI3/agent-browser is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- PyPI project: https://pypi.org/project/aether-browser/
- Socket report: https://socket.dev/pypi/package/aether-browser
- Repository: https://github.com/AetherAI3/agent-browser
- Website: https://aetherai3.github.io/agent-browser/
- Changelog RSS feed: https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser-2.xml
- Changelog JSON feed: https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser-2.json
- HTML version of this page: https://verifymcp.io/servers/aetherai3-agent-browser/aether-browser-2