Borrowing it
Nothing to install: this file belongs to ishan-parihar/facebook-lyr. 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/ishan-parihar/facebook-lyr/main/CLAUDE.mdgit clone --depth 1 https://github.com/ishan-parihar/facebook-lyrWrote 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/ishan-parihar/facebook-lyr/claude-md)<a href="https://agentmods.dev/instructions/ishan-parihar/facebook-lyr/claude-md"><img src="https://agentmods.dev/badge/instructions/ishan-parihar/facebook-lyr/claude-md/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/instructions/ishan-parihar/facebook-lyr/claude-md"><img src="https://agentmods.dev/badge/instructions/ishan-parihar/facebook-lyr/claude-md.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 | $0.00711 | $0.00711 |
| Opus 5 | $0.00356 | $0.00356 |
| Sonnet 5 | $0.00142 | $0.00142 |
| Haiku 4.5 | $0.00071 | $0.00071 |
Grade A, and why
facebook-lyr CLAUDE.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 9d 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 — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — development guide
Project
Cookie-scraping MCP server for Facebook / Messenger / Threads, mirroring
instagram-lyr. Auth = browser cookies (c_user + xs), transport =
curl_cffi Chrome impersonation against www.facebook.com private-web
endpoints + anonymous threads.net.
File map
| File | Purpose |
|---|---|
scraping/identity.py |
Shared UA / chrome131 impersonation / client hints |
scraping/parsers.py |
fb_dtsg extraction, login-wall detection, embedded-JSON deep-scan |
scraping/api_client.py |
FacebookScrapeClient — profiles, posts, messenger, comments, groups, composer uploads, Threads |
cookie_import.py |
Browser registry + SQLite cookie extraction |
drivers/browser.py |
load_cookies / validate_session |
session_state.py |
Source/runtime state + portable cookies.json (0600) |
bootstrap.py |
Auth gating + FACEBOOK_COOKIES env bootstrap + login flow |
dependencies.py |
get_ready_client + cookie write-back sink |
error_handler.py |
Exception → ToolError mapping + diagnostics |
tools/ |
tool_guard + 8 modules registering 25 tools |
cli_main.py |
AXI CLI (home view, --login, --status, direct tool calls) |
tool_registry.py |
Tool list for direct CLI execution |
Key endpoints
- Homepage (fb_dtsg):
GET https://www.facebook.com/ - Profiles/pages/groups:
GET /{username}/GET /groups/{id}(embedded JSON) - Messenger:
GET /ajax/mercury/threadlist_info.php,GET /ajax/mercury/thread_info.php,POST /ajax/mercury/send_messages.php - Writes:
POST /ajax/updatestatus.php(posts),POST /ajax/ufi/ufi_composer.php(comments),POST /ajax/composer/attachment/create/upload/(photos, best-effort) - Threads:
GET https://www.threads.net/@{username}(anonymous)
Rules
- Keep the fingerprint bundle coherent — never mix UA/TLS pairings for one session.
- Extend parsers via deep-scan predicates, not hardcoded key paths.
- All write tools:
confirm=truegate + write pacing. - Cookies are credentials — 0600 on disk, never logged or returned.
- Don't add Graph API / token code back; this is a cookie-scraping project.
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.
- 9d ago First seen · 61 lines · 711 tokens per session scan A 9ab38d662e78
facebook-lyr CLAUDE.md is an instructions file published in the GitHub repository ishan-parihar/facebook-lyr (1 stars, last pushed 29d ago), licensed MIT. It adds 711 tokens to every session, about $0.0036 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 2026-08-31.
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