Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add nex-browser/nexbrowser-mcp --skill nexbrowser-automationgit clone --depth 1 https://github.com/nex-browser/nexbrowser-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/nex-browser/nexbrowser-mcp/nexbrowser-automation)<a href="https://agentmods.dev/skills/nex-browser/nexbrowser-mcp/nexbrowser-automation"><img src="https://agentmods.dev/badge/skills/nex-browser/nexbrowser-mcp/nexbrowser-automation/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/nex-browser/nexbrowser-mcp/nexbrowser-automation"><img src="https://agentmods.dev/badge/skills/nex-browser/nexbrowser-mcp/nexbrowser-automation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00091 | $0.03926 |
| Opus 5.5 | $0.00036 | $0.01570 |
| Sonnet 5.5 | $0.00018 | $0.00785 |
| Haiku 4.5 | $0.00009 | $0.00393 |
Grade A, and why
nexbrowser-automation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NexBrowser Automation Skill
Use this skill whenever the user names NexBrowser or needs to manage or automate a live NexBrowser session through the unified NexBrowser MCP tools.
When to Use
- The user explicitly says NexBrowser/nexbrowser, NexBrowser OpenAPI, “使用 NexBrowser”, “查看有多少窗口”, “查询环境”, or “浏览器环境”.
- The user wants to list or count managed NexBrowser windows/environments/profiles. Call
nex_browser_list; do not inspect Chrome, Edge, the Codex in-app browser, operating-system windows, processes, or tabs. - The user wants to control a browser: navigate, click, type, scroll, upload, or scrape.
- The task needs element targets from an accessibility snapshot.
- The task needs help diagnosing a browser-automation failure.
Quick Decision Matrix
| User intent | Tool | Notes |
|---|---|---|
| List/count environments | nex_browser_list |
NexBrowser managed windows only; never OS windows or tabs. |
| Import custom proxies | nex_proxy_import |
Only with proxy lines the user pasted in the current request; credentials are never returned. |
| Create or edit a proxy | nex_proxy_create, nex_proxy_batch_create, nex_proxy_modify, nex_proxy_delete, nex_proxy_detect |
Structured host/port create; delete is destructive. Credentials are never returned. |
| List proxies | nex_proxy_list |
Select a proxyId for create or bind; credentials are never returned. |
| Bind a proxy | nex_browser_bind_proxy |
Closed windows only; proxyId=0 removes the binding. |
| Manage window groups | nex_browser_group_list, nex_browser_group_create, nex_browser_group_modify |
Group 0 is the ungrouped bucket and cannot be renamed or deleted. |
| Manage platform accounts | nex_account_list, nex_account_create, nex_account_batch_create, nex_account_modify, nex_account_delete |
Workspace catalog only; secrets are never returned. Open-window vault fill still uses nex_browser_accounts. |
| Bind a platform account | nex_browser_bind_account |
Closed windows only; replaces the window binding. accountIds=[] removes it. |
| Create environments | nex_browser_create |
Desktop defaults fill every field you omit; only override on request. |
| Open environments | nex_browser_open |
Pass all target IDs in one array when opening multiple windows. |
| Connect to NexBrowser | nex_browser_connect |
Requires a managed window ID; the active team is used by default. |
| Navigate to a URL | nex_browser_navigate |
Use for an initial or explicitly supplied URL. |
| Inspect elements | nex_browser_snapshot |
Preferred over a screenshot for interaction. |
| Click, type, or select | nex_browser_click, nex_browser_type, nex_browser_select_option |
Use snapshot target values. |
| Sign in to a platform | nex_browser_accounts, nex_browser_fill_account, nex_browser_fill_credentials |
Prefer a stored vault credential; use literal values only when the user explicitly supplies or asks to use them. |
| Wait for a page change | nex_browser_wait_for |
Prefer text with timeout over fixed time. |
| Read structured data | nex_browser_evaluate |
Prefer UI tools for state-changing actions. |
| Inspect visual state | nex_browser_take_screenshot |
Use when layout or rendered media matters. |
| Click without a ref | nex_browser_take_screenshot, nex_browser_mouse_click_xy |
Image grids, canvas, extension overlays; map image coordinates with the returned origin and scale. |
| Verify by SMS | nex_sms_project_list, nex_sms_buy, nex_sms_code_fill, nex_sms_release |
nex_sms_buy charges the balance directly for the requested task. |
| Debug failures | nex_browser_console_messages, nex_browser_network_requests |
Inspect after reproducing the issue. |
What ships with it
23 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- examples/aria-mode-workflow.md 655 B
- examples/connect-and-navigate.md 336 B
- examples/debugging-failed-automation.md 617 B
- examples/dynamic-content.md 444 B
- examples/file-upload.md 527 B
- examples/form-fill-submit.md 872 B
- examples/image-grid-and-extension-overlay.md 3.4 KB
- examples/multi-tab-workflow.md 602 B
- examples/navigate-by-clicking.md 637 B
- examples/optimized-mode-workflow.md 557 B
- examples/scrape-data.md 398 B
- examples/sign-in-with-bound-account.md 1.9 KB
- examples/sign-in-with-literal-credentials.md 3.8 KB
- examples/sms-verification-code.md 3.5 KB
- guides/captcha.md 24 KB
- guides/error-handling.md 1.5 KB
- guides/human-like-interaction.md 1.1 KB
- guides/services.md 13 KB
- guides/snapshot-modes.md 987 B
- guides/tool-selection.md 2.0 KB
- guides/waiting-and-timing.md 841 B
- README.md 648 B
- references/tool-catalog.md 32 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago Changed 58aaf4675983
- 7d ago Changed c7a383d77782
- 14d ago Changed · -1 lines 815ae7012b3c
- 17d ago Changed · +4 lines 58d2661f0895
- 21d ago Changed · +3 lines c11a128b8d0e
- 23d ago Changed · +22 lines c89e8e2ce1ba
- 2mo ago First seen · 115 lines · 91 tokens per session scan A 9df966eb4335
nexbrowser-automation is a skill published in the GitHub repository nex-browser/nexbrowser-mcp (0 stars, last pushed yesterday), licensed MIT. It adds 91 tokens to every session and 3,926 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
nexbrowser-automation compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| nexbrowser-automationnex-browser/nexbrowser-mcp | Skill | 0 | yesterday | MIT | A | 91 | Claude Code, Codex |
| interactive-loginyc-software/qm | Skill | 16k | today | MIT | A | 46 | Claude Code, Codex |
| pinchtab-mcppinchtab/pinchtab | Skill | 11k | 10d ago | MIT | A | 52 | Claude Code, Codex |
| azure-messaging-webpubsub-javamicrosoft/skills | Skill | 3.2k | today | MIT | A | 43 | Claude Code |
| cua-driverdavidondrej/skills | Skill | 4.3k | yesterday | MIT | A | 68 | Claude Code, Codex |
| open-design-browsercompozy/compozy | Skill | 2.9k | today | MIT | A | 56 | Claude Code, Codex |
| southwestborski/travel-hacking-toolkit | Skill | 906 | yesterday | MIT | A | 40 | Claude Code |