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 agentmods add mcp/jkheadley/instar/playwrightgit clone --depth 1 https://github.com/JKHeadley/instarGrade A, and why
playwright 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.
This is a copy
100% identical to playwright — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
{
"playwright": {
"command": "npx",
"args": [
"-y",
"@playwright/mcp@latest"
]
}
}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 First seen · 9 lines scan A 4f77e1895895
playwright is an MCP server published in the GitHub repository JKHeadley/instar (77 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. It is 100% identical to playwright, differing in 0 lines, and is treated as a copy.
Other mcp servers, from other repositories
apify
Apify MCP Server. Runs locally from the @apify/actors-mcp-server npm package. Needs 2 environment variables to run.
expect
Let agents test your code in a real browser. Runs locally from the expect-cli npm package.
helmdeck
Self-hosted MCP server: sandboxed browser, desktop, vision, code-edit packs for any agent. Runs locally from the @helmdeck/mcp-bridge npm package. Needs 2 environment variables to run.
mcp
Permanent identity + encrypted, quantum-ready memory that outlives the session, for any AI agent. Runs locally from the @uuaid/mcp npm package. Needs 4 environment variables to run.
playwright
Lets the agent drive a real browser: open pages, click, type, take screenshots and read the accessibility tree, using Playwright. Runs locally from the @playwright/mcp npm package.
playwright
Lets the agent drive a real browser: open pages, click, type, take screenshots and read the accessibility tree, using Playwright. Runs locally from the @playwright/mcp npm package.