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Answer: Was this bounty award actually paid, when, and with which transaction? Join an owned BountyBook or Taskmarket award observation to a Base transaction receipt. A paid result requires a successful receipt and a Base USDC Transfer log to the stored winner. If the award has no confirmed transfer, state that no payout proof was observed. Coverage includes only award IDs in the owned wallet-win store. Taskmarket does not expose payout transaction hashes. BountyBook settlement proof requires a stored payout hash and a matching Base USDC Transfer. Live owned-store depth: 1889 award observations over 53 award subjects from 2026-08-28T09:55:53.360976+00:00 to 2026-08-29T02:31:49.111815+00:00. The store has 532 Base observations over 28 award subjects from 2026-08-28T18:01:07.137047+00:00 to 2026-08-29T02:31:49.111815+00:00.

Real-time crypto news headlines with sentiment, ranked by importance. Aggregates keyless RSS feeds (CryptoPanic, CoinDesk, CoinTelegraph, Decrypt, Bitcoin Magazine) into deduplicated, freshness-and-source-weighted top headlines, each scored with a lexical bull/bear sentiment (very_bullish..very_bearish) plus an overall market sentiment. Filter by asset (BTC, ETH, SOL, XRP, and more) to get only headlines about that coin. Built for trading and quant agents that need a cheap, fast crypto news + sentiment pulse. Ed25519-signed. 0.001 USDC on Base.

Returns verified, citation-backed facts about new AI model releases, benchmark scores, and protocol changes, each with source URLs and confidence.

Risk screening for EVM wallet addresses. Returns a 0–100 risk score and individual flags: sanctions (OFAC/other), phishing activity, cybercrime, money laundering, darkweb transactions, mixer usage, stolen funds, fake KYC, and 12 more categories. Sourced from GoPlusLabs (free, no key, chain_id optional — defaults to checking cross-chain). Use before sending funds to an unknown address, before accepting a payment, or when validating a counterparty wallet in a DeFi workflow. Distinct from evm-toke

Search airports and cities by keyword, IATA code, or city name. Returns IATA/ICAO codes, coordinates, country, and timezone for each match — useful for travel planning, routing, and geographic enrichment.

Stack Overflow question search. Returns top-scored questions matching the query with answer counts, accepted-answer status, tags, and body excerpts. Filter by tags (comma-separated). Sort by votes, relevance, activity, or creation date. Useful for developer agents debugging errors or researching library patterns.

Get weather forecast (TAF) for a specific airport

Get weather forecast (TAF) for a specific airport

Get weather observations (METAR) for a specific airport

Get weather forecast (TAF) for a specific airport

Get weather observations (METAR) for a specific airport

Earnings calendar for upcoming US stock reports — earnings date, EPS estimate, pre/post-market timing. Filter by ticker for per-company lookups, or scan a date window (1–90 days ahead) for calendar-driven research automation. Data: Alpha Vantage 3-month calendar, cached 2 hr.

Search arXiv preprints by query, filtered by field (title/abstract/author/all) and category. Returns title, authors (up to 6), abstract (first 600 chars), arXiv ID, PDF link, publish date, and subject categories. arXiv is the canonical source for AI/ML, CS, physics, math, and quantitative biology preprints — typically months ahead of peer-reviewed journals. Useful for AI research agents, literature scouts, competitive technique tracking, and grant-writing support. No API key required.

Multi-chain DeFi portfolio scanner. Returns token holdings and USD values for any EVM wallet across Ethereum, Base, Polygon, and Arbitrum mainnet. Covers ETH, major stablecoins (USDC, USDT, DAI), WBTC, ARB, cbETH, and chain-native assets. Collapses the defi.hugen.tokyo/defi/address seam — 41 payers. $0.010/call.

Real-time movers and volume-spike leaders across all KRW-denominated markets on Upbit (South Korea's largest crypto exchange). Returns top risers, top fallers, and top volume leaders ranked by 24h change or accumulated trade value. Korean exchange data is a leading indicator frequently observed by institutional agents — the 'kimchi premium' and local retail sentiment often precede global price moves. Free upstream source (Upbit public API), covers 260+ KRW markets.

Global equity snapshot: 9 major indices (Nikkei 225, Hang Seng, ASX 200, Nifty 50, Shanghai, FTSE 100, DAX, CAC 40, Euro Stoxx 50) plus DXY. Returns current level, daily % change, 52-week range context, and region posture (bullish/mixed/bearish). Free Yahoo Finance data. No API key. Overnight context for global macro agents and forex positioning. $0.010/call.

Forward and reverse geocoding via OpenStreetMap Nominatim. Forward: convert an address or place name to latitude/longitude, bounding box, and OSM metadata. Reverse: convert lat/lon to a structured street address. Supports any location worldwide. Useful for location enrichment, address validation, coordinate lookup, and building location-aware agent flows.

Returns historical OHLCV (open/high/low/close/volume) candlestick data for a stock, ETF, or index. Supports intervals from 1-minute to monthly and ranges from 1 day to max history. Use for chart analysis, trend detection, and quantitative backtesting. $0.010/call — free upstream, no API key.

Polymarket whale intelligence for a given proxy wallet address. Returns recent prediction-market trades (market title, outcome, side, size in USDC, price, timestamp) and current open positions (title, size, avg price, current value, unrealized PnL). Infers whale tier (whale/shark/dolphin/minnow) from trade sizes. Use for copy-trading signal generation, market-sentiment cross-reference, or on-chain agent behavior profiling. Free upstream: Polymarket public data API.

Get tweet details with signed proof

Classify text (and optional image URLs) for harmful content — hate speech, harassment, self-harm, sexual content, violence, and illicit instructions. Returns flagged status, risk level (NONE/LOW/MEDIUM/HIGH), flagged categories, per-category confidence scores, and an optional AI-generated safe rewrite.

Wall Street analyst consensus and price targets for any US equity. Returns buy/hold/sell breakdown, mean recommendation score (1=Strong Buy, 5=Strong Sell), analyst count, and price target range (low/mean/median/high) with upside-to-target. Free Yahoo Finance data, no API key. Complements us-stock-price and equity-technicals with the analyst conviction layer.

Seven-lens systems theory analysis of the Bitcoin network. Returns: (1) difficulty feedback loop state + regulator lag, (2) mempool stock-flow ratio and queue depth, (3) confirmation delay at economy/priority fee tiers, (4) fee nonlinearity index and hash-rate growth curvature, (5) Nakamoto coefficient (min pools for 51% consensus), (6) self-organization score for fee market equilibrium, (7) HHI mining concentration index and decentralization grade A–F. Sourced from mempool.space — no API key r

Email address validation and quality scoring. Checks RFC-5322 syntax, detects disposable/throwaway domains (via Kickbox free API), and verifies DNS MX record presence (via Cloudflare DoH). Returns a quality score (0-100) and verdict: DELIVERABLE | RISKY | UNDELIVERABLE | INVALID. Useful for lead qualification, form validation, and filtering bot signups.