Local MCP capabilities provider for Expo
Nightshift Labs: link, token & signature pre-checks is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
What it does
Paid x402 pre-checks for agents: phishing links, Base tokens, EIP-712 permits, calldata, DNS.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http nightshift-labs-link-token-signature-pre-chec-mcp https://nightshift-x402.nightshift-labs.workers.dev/mcp
# 2 — ask your agent for something these tools do
# base_token_check, base_token_price, base_balance and 15 more
Nightshift Labs: link, token & signature pre-checks costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http nightshift-labs-link-token-signature-pre-chec-mcp https://nightshift-x402.nightshift-labs.workers.dev/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
18 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
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. Price: $0.01 USDC on Base per call (x402).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | ERC-20 token contract on Base |
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 for thin liquidity or disagreeing pools. Price: $0.005 USDC on Base per call (x402).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | ERC-20 token contract on Base |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | — |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hash | string | yes | — |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| domain | string | yes | domain name, e.g. example.com |
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 changes and upgrades. Works for any EVM chain. Price: $0.005 USDC on Base per call (x402).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| data | string | yes | hex calldata (selector + ABI-encoded args), max 16 KB |
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 allowances, spender that is a plain wallet (EOA, checked on Base), zero-payment NFT listings, bulk listings, never-expiring g
| Parameter | Type | Required | Notes |
|---|---|---|---|
| types | object | yes | EIP-712 type definitions |
| domain | object | no | EIP-712 domain (name, version, chainId, verifyingContract) |
| primaryType | string | yes | — |
| message | object | yes | the message to be signed |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gasLimit | string | no | optional: gas units of your own transaction; adds estimatedCost.custom (ETH + USD) |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| q | string | yes | ENS/Basename (e.g. vitalik.eth, jesse.base.eth) or a 0x address for reverse lookup |
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 links, senders and counterparties (phishing domains are usually days old). Price: $0.005 USDC on Base per call (x402).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| domain | string | yes | domain or host name, e.g. github.com or www.github.com |
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). Resolved via DNS-over-HTTPS. Price: $0.003 USDC on Base per call (x402).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| name | string | yes | domain or host name |
| types | string | no | optional comma list of A,AAAA,CNAME,MX,TXT,NS,CAA,SOA (default: all but SOA) |
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-By headers and cookie Secure/HttpOnly/SameSite flags. Returns a score, a list of failed checks with severity, and every
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | http(s) URL of a public site |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | wallet address on Base |
x402 seller preflight: check a paid endpoint BEFORE paying it. Fetches it unpaid, parses the 402 (v2 payment-required header or v1 body) and checks every payment option: scheme, network/testnet, asset is real native USDC on Base, EIP-712 extra.name/version match the token on-chain (prevents invalid_exact_evm_token_name_mismatch), payTo not a burn address (plus contract/tx-count/USDC balance), amou
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | https URL of the x402-paid endpoint |
| method | string | no | HTTP method to probe (default GET) |
| days | integer | no | on-chain payer history window in days (default 3) |
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, burn-address detection and an optional address-poisoning look-alike check against the address you expected (same first/las
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | string | yes | EVM address to screen |
| expected | string | no | optional: the address you meant to use (detects address-poisoning look-alikes) |
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 (Google Fonts + CSS font families, system fonts removed) and social profile links. No rendering; flags bot-protected pages.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | http(s) URL of the site (home page works best) |
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 and the full redirect chain. Returns a verdict, a 0-100 risk score and the flags. Price: $0.01 USDC on Base per call (x40
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | the URL to check (http/https) |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| url | string | yes | http(s) URL of a public page |
| maxChars | string | no | max markdown characters (default 20000, max 100000) |
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Nightshift Labs: link, token & signature pre-checks or to call it, at any volume.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| base_token_check | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_token_price | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_balance | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_tx | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| domain_email_check | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| evm_decode_calldata | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| evm_typed_data_check | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_gas | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| ens_resolve | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| domain_whois | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| domain_dns | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| web_security_headers | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| base_portfolio | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| x402_preflight | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| wallet_screen | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| web_brand | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| web_link_check | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| web_extract | untrusted-input | untrusted-input: keyword "fetch", declares openWorldHint: true (interacts with entities outside the server) |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 1.0.1.
No release note was published with this version.
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Any signed-in account that does not publish Nightshift Labs: link, token & signature pre-checks can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.