# Lumen Agent Utilities

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

- name: io.github.Dansgit2b/lumenworks-decoder
- version: 1.4.0
- connection class: unknown (unknown)
- trust: 64/100 flags: unreachable
- quality: 63/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.Dansgit2b%2Flumenworks-decoder
- tools: https://api.protogrid.dev/v1/servers/io.github.Dansgit2b%2Flumenworks-decoder/tools

**Not classified yet.** The remote endpoints have not been probed successfully, or the listing has nothing to connect to.

## Connection (mcpServers)

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


## Trust

- hygiene: 100
- liveness: 0
- freshness: 100
- provenance: 80
- drivers: +repository +namespace-matches-repo -unreachable(5 failures) +updated-10d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 63/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: eip712_decode (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); web_markdown (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); x402_lint (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,970 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 8 tool changes in 30 days
- fail `stability.rug_pull`: 1 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 14, about 1,970 tokens to load them all
- tool set hash: 158b5b969276437b883bdb17422764b8
- tools last changed: 2026-10-10T18:06:35.708Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.Dansgit2b/lumenworks-decoder.svg)](https://protogrid.dev/servers/io.github.Dansgit2b/lumenworks-decoder)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-10 `calldata_decode` changed (description, inputSchema) **meaning changed**
  - before: Decode Ethereum calldata: selector, 4byte/openchain signature lookup, ABI-decoded args for each matching candidate. Optional {signature} override.
  - after: 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.
- 2026-10-10 `polymarket_markets` added
  - 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.
- 2026-10-10 `weather_forecast` added
  - 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}.
- 2026-10-10 `sec_filings` added
  - 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).
- 2026-10-10 `arxiv_search` added
  - Search arXiv preprints: id, title, abstract, authors, categories, dates, PDF link. Supports arXiv field prefixes (ti:, au:, cat:). {query, limit<=50, sort:relevance|date}.
- 2026-10-10 `pubmed_search` added
  - Search PubMed (36M+ biomedical citations): PMID, title, journal, date, authors, DOI, URL and abstract. {query, limit<=50, sort:relevance|date, abstracts:true}.
- 2026-10-10 `explain_before_sign` added
  - 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.
- 2026-10-10 `web_markdown` changed (description, inputSchema)
  - before: Fetch a public web page and return clean LLM-ready Markdown (Readability main-content extraction, nav/scripts stripped) plus title, byline, excerpt and OpenGraph metadata. {fullPage:true} keeps the whole body; {maxChars} caps output (default 100k). No JS rendering.
  - after: 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.

Full history: https://api.protogrid.dev/v1/servers/io.github.Dansgit2b%2Flumenworks-decoder/changes

## Remotes

- https://lumenworks-x402-decoder.onrender.com/mcp (streamable-http, auth none, reachable false, uptime30d 0.44444445)

## Packages

_none_

## Tools (14)

- `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_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_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_decode`: Decode EIP-712 typed data: domain separator, signing digest, message, and plain-language risk notes (Permit, Permit2, EIP-3009, unlimited values).
- `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_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_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_search`: Search PubMed (36M+ biomedical citations): PMID, title, journal, date, authors, DOI, URL and abstract. {query, limit<=50, sort:relevance|date, abstracts:true}.
- `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_unfurl`: Unfurl a URL: final URL after redirects, HTTP status, title, description, OpenGraph/Twitter image, site name, canonical, favicon, language, published time.
- `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_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.
- `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.