REA
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
Check LLC names, federal trademarks, domains and social handles with dated sources.
Pick the AI app you use, then copy the settings.
Passed 2/3 checks · What you ask goes through the maker’s server (biznamechecker.com) · ✓ Commands checked Nov 13, 2026
First: which AI do you use?
Pick your app and the steps appear below.
Works with Claude · about 2 min
No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it
CustomizeConnectors
Copy each value into the field with the same name in Claude, then click Continue
BizNameCheckerhttps://biznamechecker.com/mcpClick Continue past the sign-in settings Claude detected · under Authentication choose what the maker says (Sign in now, Sign in when needed or No sign in), then click Add
+ConnectorsBizNameChecker
Use BizNameChecker and tell me what you can do for me, then show me one thing✓ If Claude says it is using BizNameChecker or shows a BizNameChecker tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with ChatGPT, depending on your plan
Full MCP: ChatGPT Business, Enterprise or Edu on the web · Pro: connects with read/fetch permissions, so tools that change data may not work · Plus: not confirmed in OpenAI’s docs; if you see an add-custom-MCP option on the Plugins page you can try these steps · web only
Plugins+Add custom MCP server
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
BizNameCheckerhttps://biznamechecker.com/mcpStart a new chat and pick BizNameChecker from your plugins before typing
Use BizNameChecker and tell me what you can do for me, then show me one thing✓ If ChatGPT says it is using BizNameChecker or shows a BizNameChecker tool in the answer, you are connected
Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Claude Code · about 2 min
No key, nothing to install
Mac: press Command+Space and type Terminal · Windows: open PowerShell
claude mcp add --transport http --scope user biznamechecker https://biznamechecker.com/mcpYou should see BizNameChecker listed as connected
Use BizNameChecker and tell me what you can do for me, then show me one thing✓ If Claude Code says it is using BizNameChecker or shows a BizNameChecker tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Cursor · about 2 min
No key, nothing to install
Use BizNameChecker and tell me what you can do for me, then show me one thing✓ If Cursor says it is using BizNameChecker or shows a BizNameChecker tool in the answer, you are connected
Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with VS Code · about 2 min
No key, nothing to install
Use BizNameChecker and tell me what you can do for me, then show me one thing✓ If VS Code says it is using BizNameChecker or shows a BizNameChecker tool in the answer, you are connected
Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.
Address for apps that connect over the web
https://biznamechecker.com/mcpJSON settings are under “For developers” below
Claude Code
claude mcp add --transport http --scope user biznamechecker https://biznamechecker.com/mcpCursor (~/.cursor/mcp.json)
{
"mcpServers": {
"biznamechecker": {
"url": "https://biznamechecker.com/mcp"
}
}
}VS Code (mcp.json)
{
"servers": {
"biznamechecker": {
"type": "http",
"url": "https://biznamechecker.com/mcp"
}
}
}These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Connect over the internet in
ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast
Tool names and descriptions exactly as the server reported them on Nov 10, 2026. The maker wrote them, not us; we show them as plain text.
check_business_nameCan I use this business name, and is anything stopping me? Check all four areas in one pass: LLC availability, federal trademark conflicts, domains, and social handles. Returns dated verdicts, sources, and the full results URL. Start here for a general business-name availability
check_llc_nameIs this LLC name available, and can it be registered in these states? Returns a dated preliminary or live verdict for each state, the source registry portal, and the full results URL. This is not a name reservation; the state confirms at filing. Use check_business_name instead wh
check_trademark_conflictsCould this business name conflict with a federal trademark? Returns matching marks, status, classes, owner, record links, the register date, and the full results URL. Optional filters can narrow or rank the search. This is a conflict screen, not legal advice and not trademark cle
check_domain_availabilityIs this domain available or taken? Check a name across up to five TLDs using a registered-zone index, live DNS, and the registry's RDAP record. Each row names its status and source, and the answer includes the full results URL. Use check_business_name instead for a complete name
check_social_handlesAre these social handles available or taken? Check the handle derived from a business name on 23 social platforms: github, bluesky, twitch, mastodon.social, instagram, youtube, pinterest, snapchat, telegram, tumblr, vimeo, substack, devto, threads, reddit, linkedin, medium, x, fa
get_state_naming_rulesWhat are this state's LLC naming rules? Returns the required designator, restricted-word note, recorded statute citation, state registry search portal, and results site URL. No name availability check is performed.
get_trademarkWhat does this federal trademark serial number identify? Returns the mark, status, owner, dates, classes, goods and services, first use, publication, pseudo mark, register date, and the TSDR record link.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026
The registry lists no source repo, so we cannot match the publisher (biznamechecker.com) to the code
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
No sign-in needed
Read 7 tool descriptions and found no hidden instructions to the AI
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Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (1.1.0) reached the registry 3 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT on the web (full MCP on Business and above; Pro read-only).
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
A powerful toolkit for coding, providing semantic retrieval and editing capabilities.
No README found in the repo