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 greekr4/rever-browser --skill revergit clone --depth 1 https://github.com/greekr4/rever-browserWrote 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/greekr4/rever-browser/rever)<a href="https://agentmods.dev/skills/greekr4/rever-browser/rever"><img src="https://agentmods.dev/badge/skills/greekr4/rever-browser/rever/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/greekr4/rever-browser/rever"><img src="https://agentmods.dev/badge/skills/greekr4/rever-browser/rever.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00082 | $0.01103 |
| Opus 5 | $0.00041 | $0.00551 |
| Sonnet 5 | $0.00016 | $0.00221 |
| Haiku 4.5 | $0.00008 | $0.00110 |
Grade A, and why
rever scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rever Browser
Drive a running Rever Browser app from this Claude Code session to reverse-engineer web APIs. Rever captures a real Chromium tab's network traffic and exposes ~140 MCP tools (browser control, traffic store, bundle analysis, interception, crypto tracing) that you use here.
Prerequisite
The Rever Browser app must be running — it publishes its MCP endpoint on startup to:
~/Library/Application Support/rever-browser/mcp-endpoint.json
The port is OS-assigned (changes each launch), so always resolve it from that file. If the file is missing, tell the user to launch Rever Browser first.
Connect
Preferred — register as native MCP tools (tools appear as mcp__rever__*):
claude mcp add --transport http rever "$(python3 -c "import json,os;print(json.load(open(os.path.expanduser('~/Library/Application Support/rever-browser/mcp-endpoint.json')))['url'])")"
Re-run this whenever Rever Browser restarts (the port changes). MCP servers load at session start, so if the tools aren't visible yet, start a fresh claude session.
Quick calls without registration — use the bundled helper (works immediately, reads the endpoint each call):
python3 "$(dirname "$0")/rever.py" --list # list tools
python3 rever.py browser_navigate '{"url":"https://example.com"}'
python3 rever.py list_requests
Tool map
- Browser —
browser_navigate,browser_snapshot(accessibility tree withrNrefs),browser_click/browser_type/browser_scroll(by ref),browser_screenshot,browser_evaluate,browser_wait_for,browser_tabs. - Traffic —
list_requests,get_request,get_request_initiator,fetch_body,har_export. - Bundle analysis —
list_scripts,grep_script/grep_scripts,extract_context,detect_bundler,deobfuscate_script/deob_auto,get_original_source,list_sources(source maps). - Auth & crypto —
auth_dump,decode_token,crypto_trace_start/stop/list,crypto_chain,hmac_compute,hash_iter. - Reproduce & fuzz —
find_api_base,graphql_introspect,burst_send,intruder_run,crlf_test,lfi_probe,create_macro/export_python_client. - Intercept & override —
intercept_add/intercept_fulfill/intercept_fail,inject_*,header_preset_*,dom_*. - Debugger —
bp_add,bp_eval_in_frame,bp_step_*,bp_resume. - Console / cookies —
console_logs,console_eval,console_exceptions,cookie_list/cookie_set/cookie_delete. - Findings —
finding_add,finding_list,finding_export.
What ships with it
1 file 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.
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.
- 11d ago First seen · 68 lines · 82 tokens per session scan A 2047fe46aea4
rever is a skill published in the GitHub repository greekr4/rever-browser (27 stars, last pushed 8d ago), licensed Apache-2.0. It adds 82 tokens to every session and 1,103 once invoked, about $0.0004 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 2026-08-30.
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