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 instructions/the-syntax-slayer/browser-mcp/agents-mdgit clone --depth 1 https://github.com/The-Syntax-Slayer/browser-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/instructions/the-syntax-slayer/browser-mcp/agents-md)<a href="https://agentmods.dev/instructions/the-syntax-slayer/browser-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/the-syntax-slayer/browser-mcp/agents-md.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 | $0.00209 | $0.00209 |
| Opus 5 | $0.00105 | $0.00105 |
| Sonnet 5 | $0.00042 | $0.00042 |
| Haiku 4.5 | $0.00021 | $0.00021 |
Grade A, and why
browser-mcp AGENTS.md 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
88% identical to windows-operations-mcp AGENTS.md — 9 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
browser-mcp — Agent Guide
Overview
FastMCP 3.2 server for Playwright browser automation — browse, click, screenshot, extract
Entry Points
uv run browser-mcp→browser_mcp.__main__:main
Standards
- FastMCP 3.2+ portmanteau tool pattern — tools use
operationenum param - Responses: structured dicts with
success,message, domain-specific fields - Dual transport: stdio (Claude Desktop) + HTTP (
MCP_TRANSPORT=http) - See mcp-central-docs for fleet-wide coding standards
Key Files
README.md— full documentationpyproject.toml— build config and entry pointsCLAUDE.md— Claude Code context (if present)
Install docs: follow mcp-central-docs/standards/AGENT_INSTALL_REFERENCE.md
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 · 22 lines · 209 tokens per session scan A e5f526912127
browser-mcp AGENTS.md is an instructions file published in the GitHub repository The-Syntax-Slayer/browser-mcp (1 stars, last pushed 2mo ago), licensed MIT. It adds 209 tokens to every session, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to windows-operations-mcp AGENTS.md, differing in 9 lines, and is treated as a copy.
Other instructions, from other repositories
apitap CLAUDE.md
Instructions for n1byn1kt/apitap, covering claude.md, using apitap as an mcp tool, commands, architecture and module map.
browserkit AGENTS.md
AGENTS.md instructions for browserkit-dev/browserkit, covering agents.md — workspace memory, project: browserkit, browser lifecycle, browser control and design process preferences.
moli AGENTS.md
AGENTS.md instructions for lexmount/moli: Before committing changes that modify Rust source code or Rust build metadata (such as Cargo.toml, Cargo.lock, or rust-toolchain), run all of the following from the repository root and ensure they pass.
apitap copilot-instructions.md
Instructions for n1byn1kt/apitap, covering copilot instructions for apitap, build and test commands, high-level architecture and key repository conventions.
web-developer-mcp CLAUDE.md
Instructions for Artmann/web-developer-mcp, covering claude instructions for webdev mcp server, development guidelines, code style & organization, project structure and browser management.
fanqie-publisher-skill AGENTS.md
Instructions for amm10090/fanqie-publisher-skill, covering fanqie-publisher-skill — codex cli agent adapter, read first, prerequisites, entry points and utf-8 / unicode safeguards.