Borrowing it
Nothing to install: this file belongs to chongdashu/browserbase-claude-code-stagehand. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/chongdashu/browserbase-claude-code-stagehand/main/.claude/commands/agent_prompts/stagehand_expert_prompt.mdgit clone --depth 1 https://github.com/chongdashu/browserbase-claude-code-stagehandWrote 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/commands/chongdashu/browserbase-claude-code-stagehand/stagehand_expert_prompt)<a href="https://agentmods.dev/commands/chongdashu/browserbase-claude-code-stagehand/stagehand_expert_prompt"><img src="https://agentmods.dev/badge/commands/chongdashu/browserbase-claude-code-stagehand/stagehand_expert_prompt.svg" alt="Measured on agentmods" 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 | $0.00000 | $0.03245 |
| Opus 5 | $0.00000 | $0.01622 |
| Sonnet 5 | $0.00000 | $0.00649 |
| Haiku 4.5 | $0.00000 | $0.00325 |
Grade A, and why
stagehand_expert_prompt 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 8d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 8d ago First seen · 370 lines · 0 tokens per session scan A 2cd0d97e88fd
stagehand_expert_prompt is a command published in the GitHub repository chongdashu/browserbase-claude-code-stagehand (52 stars, last pushed 1y ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 3,245 tokens. 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 2026-08-30.
Other commands, from other repositories
webapp-testing
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
can-i-use
Check browser support for web platform features against the project's browser targets.
gh-issue-use-cypress
Like /gh-issue-use-browser, but pinned to the Cypress MCP — use when your project runs the Cypress MCP for browser automation. Example — /gh-issue-use-cypress "Composer > Save" saving toasts failure but the record persists.
qa
Smoke or browser-walk a running app. Report only. Do not implement. Do not merge.
verify-pr
Verify a PR's frontend changes through browser automation.
capture_full_page
Capture a full-page (entire scrollable page, beyond the viewport) or single-element screenshot through the Chrome debugger and save it under screenshots/. Unlike takescreenshot (viewport only, no debugger), this uses CDP to render the whole page or a specific element.