Alienprobe Who MCP

Name: Alienprobe Who MCP
Author: bbrysonelite-max

by bbrysonelite-maxversion 0.1.0i★ –iRuns on your computer

Registry nameio.github.bbrysonelite-max/alienprobe-who-mcp

Install

Overview

Description from the maker (original English)

Company name, domain or LEI to its GLEIF legal entity, $0.05 via x402 on Base. Spend caps.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 45/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Law & government data
You need to fill in: PRIVATE_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: PRIVATE_KEY, MAX_USD_PER_CALL, MAX_USD_PER_SESSION

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "alienprobe-who": {
      "command": "npx",
      "args": [
        "-y",
        "@alienprobe/who-mcp"
      ],
      "env": {
        "PRIVATE_KEY": "your-value",
        "MAX_USD_PER_CALL": "your-value",
        "MAX_USD_PER_SESSION": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add alienprobe-who --env PRIVATE_KEY=your-value --env MAX_USD_PER_CALL=your-value --env MAX_USD_PER_SESSION=your-value -- npx -y @alienprobe/who-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "alienprobe-who": {
      "command": "npx",
      "args": [
        "-y",
        "@alienprobe/who-mcp"
      ],
      "env": {
        "PRIVATE_KEY": "your-value",
        "MAX_USD_PER_CALL": "your-value",
        "MAX_USD_PER_SESSION": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "alienprobe-who": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@alienprobe/who-mcp"
      ],
      "env": {
        "PRIVATE_KEY": "your-value",
        "MAX_USD_PER_CALL": "your-value",
        "MAX_USD_PER_SESSION": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

PRIVATE_KEY secret env
Hex private key of the paying wallet (USDC on Base). Optional: the free who_terms tool works without it.
MAX_USD_PER_CALL env
Per-call spend cap in USD (default 0.10)
MAX_USD_PER_SESSION env
Per-process spend cap in USD (default 1.00)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account bbrysonelite-max, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Law & government datai

More stars than 0% of the other 1747 servers in this category
Published to the registry more recently than 34% of the other 1747 servers in this category
Basic checks equal to or better than 100% of the other 1747 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Alienprobe Who MCP safe?

It passed 1 of 1 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.

What keys or codes does it need?

You need to fill in: PRIVATE_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Private Law Wiki, Compliance, SOS.city public record

Alternatives

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

Private Law Wiki

Sourced answers, search and bank-case assessment for wiki.private.law by the Mothership runtime.

by privatelawattorneysVery newUpdated today

Runs in the cloud

Install

Compliance

Indian business compliance answers: MCA late fees, filing calendar, cheque bounce, MSME interest.

by buildwright.co.inEarlyUpdated today

Runs in the cloud✓ buildwright.co.in

Install

SOS.city public record

Public records for every city: permits, alerts, wildfires, laws and funding, linked to the source.

by Proof-LayerEarlyUpdated today

Runs in the cloud

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

alienprobe-who-mcp

An MCP server that gives any agent one legal-entity fact — LEI, legal name, jurisdiction, entity and registration status — for $0.05 USDC on Base, paid per call over x402. No signup, no API key, no account. The wallet is the account.

Two tools:

Tool	Cost	What it does
`who_terms`	free	Returns the advertised price, network, payee and coverage. Never pays. Works with no wallet.
`who`	$0.05, real money	Returns the entity record. Misses and ambiguities cost nothing.

Client config

Three lines. Claude Desktop (claude_desktop_config.json) or Cursor (.cursor/mcp.json):

{ "mcpServers": { "who": { "command": "npx", "args": ["-y", "@alienprobe/who-mcp"],

"env": { "PRIVATE_KEY": "0x...", "MAX_USD_PER_SESSION": "1.00" } } } }

Drop the env block entirely and the server still starts — who_terms works, who refuses with wallet_not_configured. That is the safe way to try it.

Environment

Var	Default	Meaning
`PRIVATE_KEY`	(none)	A throwaway Base-mainnet wallet holding a little USDC. Optional. Never logged, echoed, or returned in a tool result.
`MAX_USD_PER_CALL`	`0.10`	Hard ceiling on one lookup. The lookup is advertised at $0.05.
`MAX_USD_PER_SESSION`	`1.00`	Hard ceiling on everything this server process spends before restart.

See .env.example. Never commit a real key. Fund a wallet that holds nothing else — about $1 of USDC covers 20 lookups. This repo does not tell you how to get USDC onto Base; see https://docs.base.org/base-chain/tools/bridges/.

Spend caps

The server preflights every who call with a plain, unwrapped fetch — no signer exists on that path — reads the advertised price out of the 402, and only then decides. If the price exceeds MAX_USD_PER_CALL, or would push the running total past MAX_USD_PER_SESSION, it refuses with a result the model can read and act on:

"error": "spend_cap_exceeded", "scope": "per_session", "price_usd": 0.05, "cap_usd": 1.0, "spent_usd_this_session": 1.0, "remaining_usd": 0.0, "hint": "the session budget is spent; raise MAX_USD_PER_SESSION and restart the MCP server to buy more" }

A session is one server process. Restarting the client resets the counter, so the per-session cap is a brake, not a ledger — the wallet balance is the real ceiling. Keep it small.

What comes back

A paid hit is the API's body verbatim plus paid_usd:

"schema_version": "who-lookup.v1", "subject": { "type": "who", "value": "apple.com" }, "answer": { "lei": "HWUPKR0MPOU8FGXBT394", "legal_name": "Apple Inc.", "jurisdiction": "US-CA", "entity_status": "ACTIVE", "registration_status": "ISSUED", "match": { "by": "domain", "rule": "domain_exact" }, "official_website": "https://apple.com/" }, "source": { "name": "...", "vintage": "...", "coverage": "..." }, "paid_usd": 0.05 }

q is a company name, a registrable domain, or a 20-character LEI. To disambiguate a name, append a jurisdiction in the same string: "Acme Corp;US-DE".

`paid_usd` is the authorized price, not the receipt

paid_usd is the amount the server *authorized* — the price the API advertised in its 402 and that the spend caps were judged against. It is not read back from the chain.

One case where it overstates: a wallet's first successful lookup on this pricing shelf settles at $0 (first-can-free; a property of the service, not of this client). That call still reports "paid_usd": 0.05. Every subsequent call actually moves $0.05.

The server's session counter inherits the same overstatement, which is the safe direction — it stops you early, never late. If you need the truth, the on-chain USDC Transfer from your wallet is the only receipt. Do not use paid_usd for accounting.

Free refusals

These never pay, and they come back as ordinary tool results the model can reason about — not exceptions:

Upstream	Result
`400`	`{"error":"invalid_subject","reason":"empty"}`
`404`	`{"error":"not_found","coverage":"..."}`
`409`	`{"error":"ambiguous","candidates":[...],"hint":"re-ask with the exact legal_name, then a ;jurisdiction suffix if it still collides"}`
`503`	`{"error":"source_unavailable"}`

The API only charges once it can commit to one entity, so an ambiguous re-ask is still free while it stays ambiguous.

What this does not do

No street addresses, no officers or directors, no ownership graph.
No guessing. A miss is a 404, not a best-effort answer.
Legal names that normalize to fewer than 2 Latin alphanumerics (CJK, Cyrillic, Greek, Arabic, Hebrew, Thai) are absent from this data vintage entirely — every door, not just the name door.
Domains match only where the source links an LEI to an official website, on the exact registrable domain. A subdomain misses.

Development

npm install

npm test # 28 contract rows over a mocked fetch: no network, no wallet, no payment npm run smoke # spawns the server, drives initialize/tools/list/who_terms over real stdio

npm run smoke hits the live endpoint to fetch the 402. It runs with PRIVATE_KEY blank and asserts the advertised amount is "50000" ($0.05). It cannot pay.

src/core.mjs holds the transport-free logic and takes an injected fetch, which is why the tests never need a wallet. src/index.mjs is only the MCP wiring; @x402/* and viem are imported lazily, on a call already cleared to pay.

Built on @modelcontextprotocol/sdk 1.30.0. See SPEC.md for the full contract and the distribution plan.

Alienprobe Who MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Law & government datai

Common questions

Alternatives

Private Law Wiki

Compliance

SOS.city public record

README from the maker

alienprobe-who-mcp

Client config

Environment

Spend caps

What comes back

paid_usd is the authorized price, not the receipt

Free refusals

What this does not do

Development

License

`paid_usd` is the authorized price, not the receipt