Lumen Works

Endpoints (26 live)

• POST /v1/calldata/decode — Decode Ethereum calldata: selector, 4byte/openchain signature lookup, ABI-decoded args for each matching candidate. Optional {signature} override. (0.002 USDC on Base)
• POST /v1/pubmed/search — Search PubMed (36M+ biomedical citations): PMID, title, journal, date, authors, DOI, URL and abstract. {query, limit<=50, sort:relevance|date, abstracts:true}. (0.001 USDC on Base)
• POST /v1/web/markdown — 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. (0.001 USDC on Base)
• GET /v1/weather/forecast (0.001 USDC on Base)
• GET /v1/polymarket/markets (0.001 USDC on Base)
• GET /v1/x402/lint (0.002 USDC on Base)
• GET /v1/web/markdown (0.001 USDC on Base)
• GET /v1/sec/filings (0.001 USDC on Base)
• GET /v1/calldata/decode (0.002 USDC on Base)
• GET /v1/pubmed/search (0.001 USDC on Base)
• GET /v1/web/unfurl (0.001 USDC on Base)
• GET /v1/evm/address (0.002 USDC on Base)
• GET /v1/eip712/decode (0.002 USDC on Base)
• GET /v1/arxiv/search (0.001 USDC on Base)
• GET /v1/domain/lookup (0.002 USDC on Base)
• GET /v1/tx/explain (0.002 USDC on Base)
• POST /v1/evm/address — 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. (0.002 USDC on Base)
• POST /v1/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}. (0.001 USDC on Base)
• POST /v1/tx/explain — 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. (0.002 USDC on Base)
• POST /v1/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}. (0.001 USDC on Base)

+6 more endpoints.