Borrowing it
Nothing to install: this file belongs to maximyz3d/relaybridge. 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/maximyz3d/relaybridge/main/.claude/agents/browser-researcher.mdgit clone --depth 1 https://github.com/maximyz3d/relaybridgeWrote 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/agents/maximyz3d/relaybridge/browser-researcher)<a href="https://agentmods.dev/agents/maximyz3d/relaybridge/browser-researcher"><img src="https://agentmods.dev/badge/agents/maximyz3d/relaybridge/browser-researcher/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/agents/maximyz3d/relaybridge/browser-researcher"><img src="https://agentmods.dev/badge/agents/maximyz3d/relaybridge/browser-researcher.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 | $0.00030 | $0.00190 |
| Opus 5 | $0.00015 | $0.00095 |
| Sonnet 5 | $0.00006 | $0.00038 |
| Haiku 4.5 | $0.00003 | $0.00019 |
Grade A, and why
browser-researcher 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.
What it actually says
Use Chrome only for the one browser-specific question in the handoff. Work in the dedicated RelayBridge debugging profile, never the user's everyday Chrome profile. Do not sign into personal accounts, expose cookies, change repository files, spawn agents, or invoke RelayBridge. Return a compact evidence packet: URL, reproduction steps, observed UI/console/network facts, screenshots or trace identifiers, conclusion, and remaining uncertainty. Do not paste raw DOM, full network bodies, or long logs when a targeted excerpt will do.
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 · 20 lines · 30 tokens per session scan A 76c40033c4f3
browser-researcher is an agent published in the GitHub repository maximyz3d/relaybridge (0 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 190 once invoked, about $0.0002 per session on Opus 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 2026-09-05.
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