Lumen Agent Utilities MCP Server

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not responding

Lumen Agent Utilities is listed as active in the registry but did not answer our last check. It exposes 14 tools. Last commit 11 Oct 2026.

x402 agent tools: calldata/EIP-712/x402 decoders, web→MD, ENS, DNS, PubMed, arXiv, SEC, weather

Uptime history 29 days of history · worst day 0%

29 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

233 ms

Response time

average over 24h

Stars

last commit 11 Oct 2026

Lumen Agent Utilities does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add lumenworks-decoder --transport http https://lumenworks-x402-decoder.onrender.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://lumenworks-x402-decoder.onrender.com/mcp

~/.codex/config.toml

[mcp_servers.lumenworks-decoder]
url = "https://lumenworks-x402-decoder.onrender.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "lumenworks-decoder": {
      "url": "https://lumenworks-x402-decoder.onrender.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "lumenworks-decoder": {
      "type": "http",
      "url": "https://lumenworks-x402-decoder.onrender.com/mcp"
    }
  }
}

Available tools 14

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

x402

x402_lint

Decode and lint an x402 PAYMENT-REQUIRED / PAYMENT-SIGNATURE / PAYMENT-RESPONSE header (base64 or JSON): kind, decoded object, errors/warnings (CAIP-2, checksum, EIP-712 domain, expiry).

x402_payment_safety_check

FREE, deterministic pre-payment check for an x402 endpoint. Give {url} (we fetch its unpaid 402) and/or {payment_required} (402 JSON or base64 header), plus optional expected_pay_to, expected_network, max_price_usdc, listed_price_usdc, facilitator_url, client_config {max_per_call_usdc, max_daily_usdc, idempotency_key, allow_any_pay_to}. Returns verdict ok/review/do_not_pay with checks: HTTPS/health, payTo validity & mismatch, unknown asset/network, price sanity vs cap/listing, timeout/replay window, multiple payTo, unknown facilitator, missing spend caps/idempotency. Nothing is stored; inputs that look like private keys are rejected.

arxiv

arxiv_search

Search arXiv preprints: id, title, abstract, authors, categories, dates, PDF link. Supports arXiv field prefixes (ti:, au:, cat:). {query, limit<=50, sort:relevance|date}.

calldata

calldata_decode

Use when you hold raw EVM calldata and need to know what function it calls: returns selector, matching signatures (built-in + openchain/4byte) and ABI-decoded args for each candidate; unknown selectors return signaturesFound:0 instead of an error. Optional {signature} override. Example: 0xa9059cbb… -> transfer(address,uint256) with args. $0.002, no signup; not charged if the call errors.

domain

domain_lookup

Domain intelligence: DNS A/AAAA/CNAME/MX/NS/TXT/CAA (DNS-over-HTTPS), SPF + DMARC, RDAP registration/expiry/registrar/status, domain age in days. Useful for phishing/fraud checks and lead qualification.

eip712

eip712_decode

Decode EIP-712 typed data: domain separator, signing digest, message, and plain-language risk notes (Permit, Permit2, EIP-3009, unlimited values).

evm

evm_address_lookup

Look up an EVM address or ENS name on Ethereum + Base: ENS forward/reverse + text records, EOA vs contract (EIP-7702 delegation flag), native balance, tx count, USDC/USDT balances, and ERC-20 name/symbol/decimals/supply if it is a token.

explain

explain_before_sign

Lumen Pre-Sign Check. Use before signing any EVM transaction or EIP-712 message: returns {summary, flags[], verdict} with verdict looks_ok | review | do_not_sign_unless_intended. Flags unlimited approve/increaseAllowance, EIP-2612 Permit and Permit2 (typed data and on-chain), setApprovalForAll, unknown spender, admin calls (upgradeTo/transferOwnership), zero-price Seaport orders, long deadlines, chain mismatch and x402 payTo mismatch; decodes multicall/aggregate3 inner calls one level. Example: USDC approve(spender, 2^256-1) -> do_not_sign_unless_intended, UNLIMITED_APPROVAL. Agent policy: abort on do_not_sign_unless_intended, escalate review. Informational, not a security guarantee; looks_ok does not mean safe; no simulation. $0.002, no signup, free tier 20/h; not charged if the call errors.

polymarket

polymarket_markets

Read-only Polymarket prediction-market data: search by {query} or top active markets by 24h volume. Returns question, outcomes with implied probabilities, 24h/total volume, liquidity, end date, URL. Data only, no trading.

pubmed

pubmed_search

Search PubMed (36M+ biomedical citations): PMID, title, journal, date, authors, DOI, URL and abstract. {query, limit<=50, sort:relevance|date, abstracts:true}.

sec

sec_filings

SEC EDGAR company lookup by ticker or CIK: company profile, recent filings (filter by form e.g. 10-K, 10-Q, 8-K, 4) with document links, and latest annual XBRL facts (revenue, net income, assets, liabilities, equity, EPS, cash).

url

url_unfurl

Unfurl a URL: final URL after redirects, HTTP status, title, description, OpenGraph/Twitter image, site name, canonical, favicon, language, published time.

weather

weather_forecast

Weather for any place name or lat/lon (Open-Meteo): current conditions plus up to 16-day daily forecast (temp min/max, precipitation and probability, wind, UV, sunrise/sunset). {location | latitude+longitude, days, units:metric|imperial}.

web

web_markdown

Use when you need to read a public web page as clean LLM-ready Markdown: Readability main-content extraction (nav/scripts stripped) plus title, byline, excerpt, OpenGraph metadata. {fullPage:true} keeps the whole body; {maxChars} caps output (default 100k). No JavaScript rendering, no PDFs. Example: {url:"https://example.com"} -> {title:"Example Domain", markdown:"# Example Domain …"}. $0.001, no signup; not charged if the fetch fails.

Endpoints

URL	Transport	State	Latency	Checked
https://lumenworks-x402-decoder.onrender.com/mcp	streamable-http	answering	233 ms	10 min ago

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Lumen Agent Utilities — questions

Answers built from our own checks of this server.

What can Lumen Agent Utilities do?

It exposes 14 tools, read directly from the server on our last check. Among them: arxiv_search, calldata_decode, domain_lookup, eip712_decode, evm_address_lookup, explain_before_sign and 8 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Lumen Agent Utilities working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 233 ms. The bar chart above shows every period we have measured.

The registry lists Lumen Agent Utilities as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Lumen Agent Utilities?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Lumen Agent Utilities need an API key?

No. Lumen Agent Utilities completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 14 of them are readable on this page. This is what we observed, not what the docs claim.

Is Lumen Agent Utilities open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 2 open issues. The licence covers the code in the repository, not the hosted service at lumenworks-x402-decoder.onrender.com, which runs on its operator's own terms.