Keyless Frax L2 (chain 252) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only.
Keyless world-events monitor on the GDELT 2.0 raw event feed (no key). Each 15-minute global batch of world events, filterable by keyword, country, CAMEO event-root and mention count. One JSON item per event (url, country, location, event_root, goldstein, mentions), capped by limit.
Keyless GitHub repository search with quality filters: topic, language, minimum stars, sort by stars/updated/newest. Output: one JSON item per repo (name, description, stars, forks, open issues, license, language, updated_at, url).
Keyless Hyperliquid venue pulse (public /info API, no key): perp + spot universe snapshot, top-N symbols by max leverage, new/removed symbols, leverage-cap changes and universe-size drift vs the last run (stateful KVS). Beats one-shot meta snapshots via stateful diffing. Read-only.
Keyless Solana DEX volume + liquidity monitor (public indexers, no API key): 24h/6h/1h volume, liquidity, and top pairs for major Solana DEXes, plus volume drift vs the last run (stateful KVS). One compact pulse item per run. Read-only public data.
Keyless Jupiter (Solana) price/quote-health monitor (lite-api.jup.ag, no key; NOT contract state - sibling jupiter-dex-pulse owns DEX-volume): USDC price (price/v3) + SOL/USDC swap quote; alerts: price-drift >5% vs KVS median, quote-failure, outAmount-anomaly >10%. 404s: v1&v2, v6 key-required.
Keyless Kamino (Solana lending market) monitor (DefiLlama public data, no API key): protocol TVL trend, top lending pools with APY, and changes vs the last run (stateful KVS deltas). One compact pulse item per run. Read-only public data.
Keyless Kava EVM (chain 2222) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only. EVM facet only; Cosmos-side REST not covered.
Keyless L2/sidechain block-health pulse (Polygon, Base, Optimism, Arbitrum via public Blockscout APIs, no key): per-chain cadence, gas utilization, base-fee + burnt-fee trends, reorg detection via parent-hash links, stateful KVS run-over-run deltas. Read-only public data.
Keyless multi-L2 gas-price pulse (Base, Optimism, Arbitrum, Polygon via public L2 JSON-RPC, no key): per-chain gasPrice/priority-fee/base-fee in gwei + latest block, one fallback host per chain, stateful KVS run-over-run gas/base-fee % deltas + spike & host-flip alerts. Read-only public data.
Keyless Linea L2 zk-rollup (chain 59144) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only.
Keyless Manta Pacific L2 (chain 169) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only.
Keyless Mantle L2 (chain 5000, Manta Network) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only.
Keyless crypto sentiment-ANOMALY pulse on the alternative.me Fear & Greed Index: FGI value + classification, 7d/30d/90d deltas, 7d trend, stateful alerts - classification-flip, |delta|>=15 vs previous KVS run, 7d/30d slope-reversal. Live path /fng/ (/fgi/ 404s). Sentiment, not a price signal.
Keyless Mode L2 (chain 34443) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only.
Keyless exoplanet search over the NASA Exoplanet Archive (5,600+ planets, no API key). Filter by radius, distance, equilibrium temp, discovery year; optional Earth-like habitability score + filter. Per planet: star, size, mass, distance, orbit, temp, method.
Multi-source public headline digest: open BBC / Guardian / NYT world RSS plus Hacker News. Key-free, no login. Output: one JSON item per headline (source, title, link, published, snippet), deduped.
Search 250M+ scholarly works across ALL fields (journals, preprints, reviews) on OpenAlex — key-free, no login. Year range, open-access-only, min-citations, sort by relevance / most-cited / newest. Per work: DOI, OA fulltext, citations, concepts, authors.
Keyless book metadata over OpenLibrary (40M+ titles) — no API key. Search by title, author, subject or ISBN; filter by language; sort by relevance / most editions / newest / oldest. Per book: authors, subject, publish year, editions, pages, fulltext & lending availability, series, cover, detail URL.
Keyless Polkadot node-liveness + runtime pulse (public Polkadot JSON-RPC, no API key): block cadence, runtime specVersion upgrades, reorg + idle-gap + host-flip alerts via stateful KVS. Read-only public data.
Keyless feed of the latest Product Hunt launches from the public Atom feed: title, link, publish time, trimmed description. Filter by age (days).
Keyless biomedical literature search over PubMed (NCBI E-utilities, no API key). Filter by recency. Output: one JSON item per paper (title, journal, pubdate, PMID, PubMed URL, first authors).
Keyless Scroll L2 zk-rollup (chain 534352) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only.
Keyless Sei EVM (chain 1329) network-health pulse (public JSON-RPC, no API key): latest block number + timestamp, live gas price (GWEI), chain-id gate check, and a stateful diff vs the previous run (tip delta + gas drift). One item per run. Read-only public RPC - not an oracle.