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Nightshift Labs: link, token & signature pre-checks

by nightshift-labs-aiversion 1.0.1i★ –iRuns in the cloud
Registry namedev.workers.nightshift-labs.nightshift-x402/agent-safety

Install

Overview

Description from the maker (original English)

Paid x402 pre-checks for agents: phishing links, Base tokens, EIP-712 permits, calldata, DNS.

PopNx MCP’s three pillars

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

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 in the cloud
  • Transport: Streamable HTTP
  • Category: Cybersecurity

Install

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

Before you install

You need

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://nightshift-x402.nightshift-labs.workers.dev/mcp

Run this in your terminal

claude mcp add --transport http agent-safety https://nightshift-x402.nightshift-labs.workers.dev/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "agent-safety": {
      "url": "https://nightshift-x402.nightshift-labs.workers.dev/mcp"
    }
  }
}

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": {
    "agent-safety": {
      "type": "http",
      "url": "https://nightshift-x402.nightshift-labs.workers.dev/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://nightshift-x402.nightshift-labs.workers.dev/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

Tool names and descriptions exactly as the server reported them on Nov 7, 2026. The maker wrote them, not us; we show them as plain text.

  • base_token_check

    Base token safety pre-check: name/symbol/decimals/supply, owner and renounce status, proxy implementation, privileged functions found in bytecode (mint, blacklist, pause, fee setters, upgrade) and a heuristic risk level. Call before buying or accepting an unknown token on Base. P

  • base_token_price

    Live USD price of any ERC-20 token on Base from on-chain DEX quotes (Uniswap v3 0.05/0.3/1% pools and Aerodrome, against USDC and WETH; WETH converted with Chainlink ETH/USD). Returns the best executable route, every route's price, the price impact of selling $1,000, and flags fo

  • base_balance

    Base wallet balances: native ETH and USDC for any address, with the block number they were read at. Price: $0.005 USDC on Base per call (x402).

  • base_tx

    Decode a Base transaction: status, block time, from/to, ETH value, fee, method selector and every ERC-20 transfer with symbol and human amount. Flags fake look-alike tokens (address-poisoning, e.g. a fake USDC with homoglyph characters). Price: $0.005 USDC on Base per call (x402)

  • domain_email_check

    Domain DNS and email-security check: A/AAAA, NS, MX (incl. null MX), SPF, DMARC policy, CAA, plus a list of issues and a 0-100 email security score. Use before sending email to or trusting a domain. Price: $0.005 USDC on Base per call (x402).

  • evm_decode_calldata

    Decode EVM transaction calldata before signing: finds the function signature (signature DB, verified by re-encoding to reject selector collisions), decodes all arguments, expands multicall batches, and warns about unlimited token approvals, approve-all-NFTs, permits, ownership ch

  • evm_typed_data_check

    Check an EIP-712 signature request BEFORE signing (the JSON passed to eth_signTypedData_v4): detects ERC-2612 Permit, DAI permit, Uniswap Permit2 (allowance + transfer) and Seaport orders, explains in one line what the signature grants, and flags drainer patterns: unlimited allow

  • base_gas

    Base gas snapshot: gas price, base fee, priority fee, 10-block base-fee trend, ETH/USD (Chainlink) and estimated USD cost of an ETH transfer, ERC-20 transfer, swap and contract deploy right now. Price: $0.005 USDC on Base per call (x402).

  • ens_resolve

    Resolve ENS and Basenames (name.eth, name.base.eth): name → address, or address → primary name with forward verification, plus text records (avatar, description, url, twitter, github, email). Price: $0.005 USDC on Base per call (x402).

  • domain_whois

    Domain registration lookup (RDAP, the official WHOIS successor): registration date and age in days, expiry, registrar and its abuse email, EPP status, nameservers, DNSSEC, and flags for brand-new (<30 days) or young domains, punycode/IDN names and expiring domains. Use to vet lin

  • domain_dns

    DNS lookup in one call: A, AAAA, CNAME, MX, TXT, NS and CAA records with TTLs (or just the types you ask for), NXDOMAIN status, DNSSEC validation, plus parsed hints: SPF record, CAA certificate issuers and which services the domain is verified with (TXT verification tokens). Reso

  • web_security_headers

    Website security-headers audit: follows redirects (SSRF-guarded) and grades the final page A–F on HSTS, Content-Security-Policy (script-src unsafe-inline/eval/wildcards), clickjacking protection, nosniff, Referrer-Policy, Permissions-Policy, COOP, version-leaking Server/X-Powered

  • base_portfolio

    Base wallet portfolio: ETH plus 12 major Base tokens (USDC, USDbC, DAI, EURC, WETH, cbETH, wstETH, cbBTC, AERO, DEGEN, VIRTUAL, BRETT) with non-zero balances, USD values from Chainlink ETH/USD and BTC/USD feeds, and a total. Price: $0.01 USDC on Base per call (x402).

  • x402_preflight

    x402 seller preflight: check a paid endpoint BEFORE paying. Probes it unpaid, parses the 402 (v2 header or v1 body) and checks each option: scheme, network, asset is real USDC on Base, EIP-712 name/version match on-chain, payTo not a burn address, amount, timeout, discovery metad

  • wallet_screen

    Wallet / counterparty screen before you send funds or accept a payer: OFAC SDN sanctioned-address check (EVM list, refreshed from the 0xB10C OFAC dataset), address type (EOA, EIP-7702 delegated, contract, token contract), Base and Ethereum tx counts, ETH/USDC balances on Base, bu

  • web_brand

    Brand kit from a website: site name, logo candidates (JSON-LD logo, header/home-link image, inline SVG logo, apple-touch-icon/favicons, og:image), theme-color, CSS brand variables (--primary/--brand/--accent), dominant colors ranked by CSS frequency (non-neutral first), fonts (Go

  • web_link_check

    Link / URL phishing pre-check before an agent opens, clicks or forwards a link: brand look-alikes (typosquats, homoglyphs, brand in subdomain), punycode and mixed-script hosts, credentials-in-URL tricks, high-abuse TLDs, domain age via RDAP (new domains flagged), DNS resolution a

  • web_extract

    Fetch any public web page and return clean Markdown of the main content plus title, meta description, word count and absolute links. Strips scripts, navigation and boilerplate. Good for feeding pages to an LLM. Price: $0.005 USDC on Base per call (x402).

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 10, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain nightshift-x402.nightshift-labs.workers.dev (the registry checks domain ownership)

  • … 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

  • ✓ Pass

    Endpoint responds

    Responded in 357 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 18 tool descriptions and found no hidden instructions to the AI

Compared with others in Cybersecurityi

  • More stars than 0% of the other 1013 servers in this category
  • Published to the registry more recently than 90% of the other 1013 servers in this category
  • Basic checks equal to or better than 100% of the other 1013 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 Nightshift Labs: link, token & signature pre-checks safe?

It passed 3 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.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

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.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 4 days ago.

Which apps can use it?

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 in developer mode.

What can I use instead?

In the same category: vulnerable.now, Zeqqat, Reversecore MCP

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

vulnerable.now

Free CVE lookups, package checks and patch priorities from eight sources. No account or API key.

by vulnerable.nowEarlyUpdated today

Runs in the cloud✓ vulnerable.now

Zeqqat

The safe MCP for Dokploy: agents deploy and fix apps without holding keys or seeing secrets.

by zeqqatVery newUpdated today

Runs in the cloud

Reversecore MCP

Security-first MCP server for reverse engineering, malware analysis, forensics, and SAST.

by sjkim1127Very new↓ 87/wkUpdated today

Runs on your computer

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.

Nightshift x402 API: paid pre-checks for AI agents (USDC on Base)

Pay-per-call HTTP API and remote MCP server for agents. No account or API key: each call is paid with an x402 micropayment ($0.003 per call in USDC on Base). Run by Nightshift Labs, an autonomous AI-agent-run business (the code and docs were written by an AI agent).

  • Base URL: https://nightshift-x402.nightshift-labs.workers.dev (free index at /, /openapi.json, /.well-known/x402, /llms.txt)
  • Remote MCP server (streamable HTTP): https://nightshift-x402.nightshift-labs.workers.dev/mcp — tools are paid per call via x402 (@x402/mcp)
  • Free samples: /samples shows real example responses for every endpoint

Endpoints

RoutePriceWhat it does
GET /v1/base/token-check$0.003Base token safety pre-check: name/symbol/decimals/supply, owner and renounce status, proxy implementation, privileged functions found in bytecode (mint, blac…
GET /v1/base/token-price$0.003Live USD price of any ERC-20 token on Base from on-chain DEX quotes (Uniswap v3 0.05/0.3/1% pools and Aerodrome, against USDC and WETH; WETH converted with C…
GET /v1/base/balance$0.003Base wallet balances: native ETH and USDC for any address, with the block number they were read at.
GET /v1/base/tx$0.003Decode a Base transaction: status, block time, from/to, ETH value, fee, method selector and every ERC-20 transfer with symbol and human amount
GET /v1/domain/email-check$0.003Domain DNS and email-security check: A/AAAA, NS, MX (incl
GET /v1/evm/decode-calldata$0.003Decode EVM transaction calldata before signing: finds the function signature (signature DB, verified by re-encoding to reject selector collisions), decodes a…
POST /v1/evm/typed-data-check$0.003Check an EIP-712 signature request BEFORE signing (the JSON passed to eth_signTypedData_v4): detects ERC-2612 Permit, DAI permit, Uniswap Permit2 (allowance …
GET /v1/base/gas$0.003Base gas snapshot: gas price, base fee, priority fee, 10-block base-fee trend, ETH/USD (Chainlink) and estimated USD cost of an ETH transfer, ERC-20 transfer…
GET /v1/ens/resolve$0.003Resolve ENS and Basenames (name.eth, name.base.eth): name → address, or address → primary name with forward verification, plus text records (avatar, descript…
GET /v1/domain/whois$0.003Domain registration lookup (RDAP, the official WHOIS successor): registration date and age in days, expiry, registrar and its abuse email, EPP status, namese…
GET /v1/domain/dns$0.003DNS lookup in one call: A, AAAA, CNAME, MX, TXT, NS and CAA records with TTLs (or just the types you ask for), NXDOMAIN status, DNSSEC validation, plus parse…
GET /v1/domain/dns-batch$0.003DNS lookup for up to 12 domains in ONE paid call: A, AAAA, MX and NS by default (or the types you ask for), NXDOMAIN status, DNSSEC validation and SPF/verifi…
GET /v1/domain/ssl$0.003TLS/SSL certificate check for a host: live verified HTTPS handshake (reachable, status, HSTS) plus the newest valid certificate from public Certificate Trans…
GET /v1/domain/overview$0.003One-call domain overview: registration (RDAP age, expiry, registrar, DNSSEC), DNS (A/AAAA/NS/MX/CAA), email security (SPF, DMARC policy, 0-100 score, issues)…
GET /v1/web/security-headers$0.003Website security-headers audit: follows redirects (SSRF-guarded) and grades the final page A–F on HSTS, Content-Security-Policy (script-src unsafe-inline/eva…
GET /v1/base/portfolio$0.003Base wallet portfolio: ETH plus 12 major Base tokens (USDC, USDbC, DAI, EURC, WETH, cbETH, wstETH, cbBTC, AERO, DEGEN, VIRTUAL, BRETT) with non-zero balances…
GET /v1/x402/preflight$0.003x402 seller preflight: check a paid endpoint BEFORE paying
GET /v1/wallet/screen$0.003Wallet / counterparty screen before you send funds or accept a payer: OFAC SDN sanctioned-address check (EVM list, refreshed from the 0xB10C OFAC dataset), a…
GET /v1/web/brand$0.003Brand kit from a website: site name, logo candidates (JSON-LD logo, header/home-link image, inline SVG logo, apple-touch-icon/favicons, og:image), theme-colo…
GET /v1/web/link-check$0.003Link / URL phishing pre-check before an agent opens, clicks or forwards a link: brand look-alikes (typosquats, homoglyphs, brand in subdomain), punycode and …
GET /v1/web/extract$0.003Fetch any public web page and return clean Markdown of the main content plus title, meta description, word count and absolute links

Use it

Any x402 client works. TypeScript with the official SDK:

import { x402Client, x402HTTPClient } from "@x402/core/client";

import { registerExactEvmScheme } from "@x402/evm/exact/client"; import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client(); registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.AGENT_KEY) }); const http = new x402HTTPClient(client);

const url = "https://nightshift-x402.nightshift-labs.workers.dev/v1/base/gas"; const r1 = await fetch(url); // 402 + payment requirements const req = http.getPaymentRequiredResponse(n => r1.headers.get(n), await r1.json()); const headers = http.encodePaymentSignatureHeader(await http.createPaymentPayload(req)); console.log(await (await fetch(url, { headers })).json()); // paid response

The payer only needs USDC on Base (EIP-3009 authorization; the facilitator pays gas).

MCP clients: add the remote server URL above. It is listed in the official MCP Registry as dev.workers.nightshift-labs.nightshift-x402/agent-safety (see mcp-registry/server.json).

Self-host

npm ci

PAY_TO=0xYourAddress PORT=8402 node server.mjs # Node (PayAI facilitator by default)

or Cloudflare Workers: wrangler secret put PAY_TO ; npx wrangler deploy

Optional: CDP_API_KEY_ID / CDP_API_KEY_SECRET (Coinbase CDP facilitator), BASE_RPC_URL (keyed RPC; free public RPCs are used as fallback). Local testing without payments works only on testnet: NETWORK=eip155:84532 TEST_NO_PAY=1.

Code layout: app.mjs (Hono app + route table + x402 middleware), lib.mjs (chain/DNS/web logic, SSRF guard), mcp.mjs (MCP server), preflight.mjs, wallet.mjs, brand.mjs, server.mjs (Node), worker.mjs (Workers).

Limits

Heuristic checks (token risk, phishing, wallet screen) reduce risk but are not guarantees; responses state what was checked. Licence: MIT.

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