syphin.dev

Get an email when its DNS, website or certificate changes.

syphin.dev serves a website of its own over HTTPS. It answers on IPv4 only, with a valid TLS certificate.

1,102,886 other domains share an IP address with it.

The most recent crawl returned the page title “Syphin — AI Agent Skill, Rule & Prompt Management Platform” and 59,220 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.dev	Statistics for all domains we know under this TLD.
Has website	yes	A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record	no	The domain has an MX record.
External redirect	no	The domain redirects to another domain.
Redirect to https	yes	The domain redirects to https.
Redirect to www.	no	The domain redirects to www.domain.
Only with www.	no	The domain can only be reached with the subdomain "www".
Only DNS, no website	no	There are no A or AAAA records in DNS.
IP-Address	only IPv4	Shows whether the domain only has IPv4 or IPv6 or both.
SSL-Certificate	valid	Shows whether the domain has a valid SSL certificate.
Redirects	0	Number of domains that redirect to this domain.
Reverse IP	1,102,886	Number of domains with the same IP(s).

This data through the API

The data on this page is also available as JSON: /lookup for the key facts, /reverseip, /redirect and /similar for the lists, and /dnshistory with Basic and Premium. A free account comes with an API key and 100 calls a day.

curl -X POST https://api.webxtrend.com/v1.0/lookup \
  -H 'Content-Type: application/json' \
  -d '{"token": "YOUR_TOKEN", "query": "syphin.dev"}'

Create a free account Read the API docs

Similar websites

Website	Similarity
skill-manager.fr SkillManager: AI agents for Claude Code, Codex, Cursor and Gemini CLI Install and sync AI agents, skills, and rules into Claude Code, Codex, Cursor, and Gemini CLI with one CLI. Free for one machine and up to 10 agents. Pro for...	85 %
contexts.md contexts.md - the directory of AI agent context and rules files contexts.md is a directory of agent context files - browse community CLAUDE.md, AGENTS.md, .cursorrules, .cursor/rules, copilot-instructions.md, Windsurf rul...	85 %
agentplaybookpro.com Agent Playbook Pro — Ship Production Code With AI Agents The practical playbook for building production-grade software with AI coding agents. Real patterns from a real SaaS — 37,000 lines of clean, maintainable cod...	85 %
knwlge.com Knwlge — context your AI coding agent can trust Knwlge captures the implicit rules, decisions and dangerous patterns your team already knows, and serves them as verified, source-cited context cards inside...	84 %
rulz.io Rulz - One source of truth for AI coding rules Centralize your team's AI coding standards. Pull into every repo with one command. Generate configs for Claude, Cursor, Copilot, Windsurf, and 40+ tools.	84 %
postmq.com postmq — durable messaging and session state for AI agents Durable messages between AI coding agents and session state that survives restarts — sessions, decisions, rules — one MCP server, a REST API, a dashboard.	84 %
superclawd.com SuperClawd \| Claude Code, supercharged Bring your team's coding standards, skills, and guardrails into Claude Code — delivered on demand, every session. Define your rules once; Claude follows them.	84 %
useagentbrain.com Deployment Paused	84 %
ruleskein.com Production-ready agent rules from your brief · Ruleskein Turn a project brief into a production-ready Markdown pack—README, rules, skills, and integration paths for Cursor, Claude Code, Copilot, and your stack.	84 %
getvortic.com Company Brain: memory for AI coding teams Agent memory that writes itself. Company Brain turns your team's Claude Code, Codex and Cursor sessions into rules, lessons and skills that every agent is to...	84 %
metaskill.md metaskill.md — Organize your AI agent skills across every project Keep your AI agent skills, prompts, and agents organized and in sync across every project, device, and team. One reference file. Six commands. No dependencies.	84 %
masterskills.dev MasterSkills — The private skill registry for your AI coding agents A private skill registry for developer teams. Publish, secure, and sync agent skills across 70+ coding agents — Claude Code, Codex, Cursor, and more — with h...	84 %
tryfridaywork.com Friday Work: Multiplayer Workspace for Coding Agents and Teams Friday Work is a multiplayer AI workspace where your team and AI agents share one session, one context and one record. Steer agents together and ship faster.	84 %
retain7.com Shared memory for AI coding agents, over MCP - Retain7 Shared memory for your team's AI coding agents, over MCP. Decisions and failed attempts saved in Cursor are found in Claude Code, Codex and ChatGPT.	84 %
sekixu.dev AI Coding Agent Consultant for Claude Code & Codex Teams \| Seki Xu Claude Code and Codex setup for engineering teams at about $40 per engineer a month, plus pre-launch security audits for AI-built apps. Fixed prices.	83 %
maind.dev MAIND — The context layer for AI-native development AI-readiness infrastructure for your codebase. Structure your repo, control your context budget, and feed your agents curated lessons through a single MCP en...	83 %
agenticjumpstart.com Agentic Jumpstart — Claude Code & Cursor Course for Developers Master agentic coding with Claude Code and Cursor by building a real production app. One-time purchase, lifetime access. Taught by Web Dev Cody.	83 %
vibecodetextbook.com Vibe Code Textbook Field notes on coding with AI agents: harness walkthroughs, repeatable workflows, the repos worth reading, and honest measurements of what the tools actually...	83 %
memkith.com Shared memory for AI coding agents \| Memkith Give your engineering team’s coding agents shared, code-scoped context across Cursor, Claude Code, Windsurf, Codex, and Zed.	83 %
lorvel.dev Lorvel — Your team's lore, at agent velocity Lorvel stores your team's conventions, decisions, and gotchas as atomic, governed knowledge — and serves them to every AI coding agent over MCP.	83 %

Websites whose start page offers something similar, found by comparing the text of their start pages, across languages. Near-identical copies, parking pages and error pages are left out. The full list of up to 100 comes through the API: similar websites.

Last SSL certificate

Issuer	Let's Encrypt
Valid from	9/10/2026
Valid to	12/9/2026
Time until expiry	50 days

Last successful crawl

Title	Syphin — AI Agent Skill, Rule & Prompt Management Platform
Description	Manage skills, rules, and prompts for AI coding agents in one place. Centralize your CLAUDE.md files, Cursor rules, and coding standards. Deliver them automatically to Claude Code, Cursor, Windsurf, and any MCP-compatible agent.
Content-Length	59,220 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

DNS history

IPv4 address	Last updated
76.76.21.21	5/19/2026

Name server	Last updated
nash.ns.cloudflare.com	5/19/2026
veronica.ns.cloudflare.com	5/19/2026

The five most recent states of each record type. The full history comes through the API: DNS history.

Most recent redirect domains

No domains found.

Reverse IP neighbours

76.76.21.21 1,102,886 domains · here since 9/13/2026

Domain	On this IP since
zzzzzem.tech	9/17/2026
zzzzzebra.com	9/13/2026
zzzzhi.com	9/17/2026
zzzyyp.cn	9/23/2026
zzzygh.cn	9/19/2026
zzzybzsb.com	9/15/2026
zzzy1688.com	9/18/2026
zzzwd.com	9/19/2026
zzzventurescapital.com	9/19/2026
zzztimer.com	9/13/2026
zzztgjg.cn	9/14/2026
zzzsyl.com	9/23/2026
and 1,102,873 more

Sharing an address does not always mean sharing a server: on a CDN or a large hosting platform, millions of unrelated domains answer on the same few addresses. We measured how far that goes in Half the web sits on 276 IP addresses. The complete list of neighbours, also for an IP address, comes through the API: reverse IP lookup.

Dive into our data, search now!