The Stall — x402 Intelligence Marketplace

Parse and explain any Unix cron expression in plain English. Returns human-readable schedule description, field breakdown, and the next N run times (UTC). Supports @yearly/@monthly/@weekly/@daily/@hourly shortcuts. Zero external calls.

English word lookup: definitions (up to 4 per part of speech), phonetic transcription, audio pronunciation URL, synonyms, antonyms, and example sentences. Supports multiple parts of speech per word (noun, verb, adjective, etc.). Useful for writing agents, NLP preprocessing, vocabulary enrichment, content generation, and semantic pre-flight checks. No API key required.

Real-time Kimchi Premium for any Upbit-listed token: KRW price on Upbit vs USD price on global exchange (Kraken/OKX), FX-adjusted. Returns premium_percent and premium_direction. Matches printmoneylab endpoint at 1/1 price.

Liveness + echo probe. Pays back a timestamp and echoes `msg`. Use to verify the x402 rail and Bazaar listing end to end.

Crypto price direction prediction markets from Polymarket. Returns binary up/down markets for BTC, ETH, SOL, XRP and other assets — current market consensus on near-term price direction. Filter by asset symbol or get all active crypto markets. Use for directional sentiment, agent decision context, or signal feeds.

Returns DeFi protocols ranked by daily fees (revenue generated). Covers 1000+ protocols across chains — DEXes, lending markets, derivatives, stablecoins. Includes 1d/7d/30d trend context, category breakdown, and chain presence. Use to identify which protocols are capturing the most economic activity, screen for fundamental DeFi strength, or compare protocol revenue trajectories.

Historical OHLCV bars for any US stock, ETF, or index. TradingView-compatible resolution (D, W, M, 60, 15, 5, 1). Pass Unix timestamps for from/to. $0.005/call — no API key required. Use us-stock-price for live quotes; equity-technicals for indicators.

Returns current US equity price and intraday metrics (change %, volume, day high/low, 52-week range) for any NYSE/NASDAQ ticker. Sourced from Yahoo Finance public data — no API key, live during market hours. $0.005/call.

Real-time US AQI and pollutant readings for any lat/lon. Returns current AQI with category label (Good/Moderate/Unhealthy/Hazardous), PM2.5, PM10, nitrogen dioxide, ozone, carbon monoxide, dust levels, and UV index. Data from CAMS (Copernicus Atmosphere Monitoring Service), updated hourly. Use for health advisories, outdoor event planning, environment-sensitive routing, or regulatory compliance checks.

Returns block header data (number, hash, timestamp, gas used/limit, base fee, tx count, validator address) for any block on Base, Ethereum, or Arbitrum. Accepts block tag (latest/safe/finalized) or number. Free-RPC alternative to skills.onesource.io at 33% lower price — $0.002 vs $0.003.

Country information lookup by name, ISO code (alpha-2 or alpha-3), or capital city. Returns: official name, ISO codes, capital, population, area (km²), region, languages, currencies (code + symbol), borders, calling code, timezones, and flag image URL. Useful for international business agents, geographic enrichment, currency identification, and compliance workflows.

Returns an Ethereum block header and transaction hashes by block number, hex string, or tag (latest/pending/earliest/safe/finalized). Fields: block_number, hash, parent_hash, miner, timestamp_iso, gas_used, gas_limit, base_fee_gwei (EIP-1559), tx_count, transaction_hashes. Supports Ethereum (default), Base, Polygon, and Arbitrum. $0.004/call.

Returns the current nonce (confirmed transaction count) and pending nonce for any EVM wallet address. Supports Ethereum, Base, Polygon, Arbitrum, and Optimism. Use the pending nonce when building new transactions. $0.002/call — 33% below comparable market rate.

Search the Federal Register for Rules, Proposed Rules, and Notices matching a keyword — returns title, abstract, document type, agencies, significance, effective date, and links. No API key. $0.002/call.

Search HuggingFace Hub for ML models. Specify a keyword (e.g. 'bert', 'llama', 'stable diffusion') and optional task filter (e.g. 'text-classification', 'text-generation', 'image-classification'). Returns top results sorted by downloads or likes, including model ID, author, pipeline task, framework library, download count, likes count, and tags.

Fetch NFT metadata, traits, image URL, and collection floor price for any ERC-721 or ERC-1155 token. Returns name, description, all attributes/traits, cached image CDN URL, collection name, OpenSea floor price, token type, and mint block. Supports Ethereum, Polygon, Base, Arbitrum mainnet. Useful for NFT valuation research, portfolio analysis, content generation, and collection intelligence. Free upstream: Alchemy NFT API.

Timezone intelligence using the IANA database (418 zones) built into Node.js. Returns current local time, UTC offset, DST status, and the long timezone name for any IANA timezone. Can also convert an ISO timestamp to one or more target timezones. Useful for scheduling agents, global operations, and time-aware data enrichment. Zero external API calls — instant response.

Converts between 100+ units across 12 categories: length, weight, temperature, volume, speed, area, energy, pressure, data, time, angle, frequency. Handles mixed-case inputs (km, KM, Km all work). Returns the converted value plus all common units in the same category. Zero external calls — pure math.

Real-time global earthquake events from USGS. Filter by magnitude, depth, location radius, or time window. Returns location, magnitude, depth, PAGER alert, and USGS event URL. Free primary source — no API key.

Returns the native token balance (ETH, POL, BNB) for any EVM wallet address. Supports Ethereum, Base, Polygon, Arbitrum, Optimism, and BSC. Includes optional USD value. $0.010/call. Free upstreams: DRPC + CoinGecko, no API key required.

Wikipedia article lookup and search. Given a search query, returns the top matching Wikipedia articles with title, plain-text extract (~800 chars), description, thumbnail URL, page URL, and last-modified date. Use for rapid factual lookup, entity enrichment, concept explanation, or pre-flight research on any topic. No API key required.

Know Your Agent (KYA) trust score for any EVM wallet. Returns a 0–100 score, tier (trusted/verified/unknown), sanctions screening result, per-dimension score breakdown (wallet age, activity, sanctions, ERC-8004 identity, KYB, tx history, trust bond, endpoint quality), on-chain attestations (Coinbase KYC, Gitcoin Passport, USDC balance), wallet stats (balance, tx count, estimated age), and per-transaction spending limits. Use before accepting payment from an agent or before dispatching a sub-age

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.

Aviation weather (METAR + TAF) for any airport. Returns current conditions (temp, wind, visibility, ceiling, flight category VFR/MVFR/IFR/LIFR) plus 24–30 hour TAF forecast periods. Accepts IATA (JFK) or ICAO (KJFK) codes. Source: NOAA Aviation Weather Center — official, real-time, no API key.

Base chain season snapshot: total chain TVL, top 10 protocols by Base-native TVL, category breakdown, 7d trend, and top Base ecosystem tokens by market cap. No input required — agents use this for pre-trade orientation before DeFi, lending, or liquidity calls on Base.

Extracts structured breadcrumb navigation from a URL. Returns domain, ordered path segments with human-readable labels, query parameters as key-value pairs, and a formatted breadcrumb trail string. Identifies numeric IDs vs. named path segments. Pure URL parsing — zero external calls. Useful for agents that process sitemaps, navigation menus, or need to understand page hierarchy.

Converts commit messages to a keep-a-changelog release block. Groups feat/fix/perf/docs/security commits into Added/Fixed/Changed/Security sections. Returns versioned markdown or structured JSON. No API key — pure transform.

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.

Locale-aware currency formatting and symbol lookup for any ISO 4217 currency. Formats numbers as currency strings (e.g. 1234.56 USD → '$1,234.56', EUR in German locale → '1.234,56 €'), returns currency symbol, decimal separator, grouping separator, and currency name. Pure computation — no API key, no upstream latency. Supports 150+ currencies and custom locale overrides. Use for: financial report generation, invoice display, DeFi amount formatting, cross-regional price display.

Database performance intelligence: current versions, EOL status, and benchmark-grounded performance profiles for PostgreSQL, MySQL, MariaDB, MongoDB, Redis, Elasticsearch, SQLite, Cassandra, CockroachDB, and SQL Server. Useful mid-task for infrastructure audits, database selection, and upgrade urgency checks. Live EOL data from endoflife.date; performance profiles from TPC-C, pgbench, sysbench, and YCSB benchmarks.

DNS record lookup for any domain via Cloudflare DoH. Supports A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, or ALL record types. TXT lookups include SPF/DMARC/DKIM email security signal extraction. Useful for domain audits, email configuration verification, CDN setup checks, and infrastructure reconnaissance.

Check domain name availability across multiple TLDs (com, net, org, io, ai, co, app, dev by default). Returns per-TLD availability status, registrar, and expiry for registered domains. Uses RDAP — authoritative registry data, no API key. Ideal for brand research, startup naming, and domain portfolio work.

Retrieves SEC Form 144 planned insider sale filings for a US public company — earlier signal than Form 4 (post-trade). Returns seller name, role, shares planned for sale, market value, approximate sale date, and acquisition type (RSU, open market, etc.).

Multi-chain gas price oracle: fast/standard/slow Gwei + USD cost for a transfer. Chains: ethereum, base, polygon, arbitrum, bsc. Seam: x402node/myceliasignal gas feeds.

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.

HTTP response headers inspector and security grader. Fetches headers from any public URL and evaluates OWASP-recommended security headers: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. Returns raw headers, per-header security findings, overall grade (A–F), and actionable recommendations. Useful for web app security audits, CDN configuration verification, and compliance checks.

Geolocation and network intelligence for IP addresses or domain names. Returns country, region, city, coordinates, ISP, organization, ASN, reverse DNS, and proxy/VPN/mobile/hosting flags. Accepts IPv4, IPv6, or domain names (auto-resolved to IP). Useful for infrastructure audits, fraud detection, blockchain node geography, and origin enrichment.

Safe regex testing and extraction. Validates a pattern, finds all matches (with capture groups), replaces text, and explains what the pattern matches. Zero external API calls — instant, deterministic. Useful for agents generating or debugging regex patterns mid-task, validating extracted data, or transforming text with precision.

Academic paper search across 250M+ works via OpenAlex (free, no key). Returns top papers with title, authors, year, DOI, citation count, open-access status, and primary research topic. Covers all disciplines: AI/ML, medicine, physics, economics, law, biology, and more. Supports relevance, citation-count, and recency sorting; open-access filtering; and year-range constraints. Use for literature review, prior-art search, citation building, or finding the seminal papers in any field.

Queries the Internet Archive Wayback Machine for historical snapshots of any public URL. Returns the closest archived snapshot URL, capture timestamp (ISO 8601), and HTTP status code at the time of capture. Optionally lists up to 10 recent snapshots to trace how a site evolved over time. Covers 800B+ archived pages spanning 27+ years of web history. Useful for due diligence (when was this domain first archived?), fact-checking, competitor tracking, and retrieving archived regulatory or financia

Active NOAA weather alerts for any US state — tornado warnings, flash flood watches, hurricane warnings, blizzard advisories, heat alerts, and 80+ other NWS event types. Real-time data from api.weather.gov; no API key. Filterable by state, event type, or severity. Returns event, severity, certainty, urgency, affected areas, onset/expiry, headline, and protective action instructions. Complements weather.js (forecasts) — this cap covers active emergencies.

Extract structured company intelligence from any public website. Returns company name, description, logo, emails, phones, address, founded date, social links (Twitter/LinkedIn/GitHub/etc.), and raw OpenGraph + schema.org/Organization data. Pure HTML extraction — no external APIs. $0.003 hedge against orbisapi web-scrape-company at $0.005.

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.

World Bank open data — 1600+ development indicators for 200+ countries. Returns most-recent values and 5-year trend for any indicator by country. Covers GDP, population, inflation, unemployment, FDI, debt, exports, CO₂, life expectancy, Gini, internet penetration, ease of doing business, and more. Accepts ticker-style aliases (gdp, inflation, unemployment) or full WB indicator codes. Sourced from api.worldbank.org — free, no key required. Use for country risk, macro comparisons, policy analysis

Fiber optic chromatic dispersion calculator. Computes dispersion coefficient D(λ) in ps/(nm·km), accumulated dispersion (ps/nm) over a fiber span, and dispersion slope for SMF-28, NZDSF, DSF, LEAF, DCF, and ULLSF fiber types. Optionally sweeps a wavelength range (C-band, L-band, or custom). Pure math — instant, zero API calls. Useful for optical network design, DWDM link budget, and dispersion compensation planning.

Looks up classic and contemporary books by title, author, or ISBN via Open Library (748M+ editions). Returns publication year, subjects/genres, page count, cover images, and links to read online via Project Gutenberg or Internet Archive. Useful for research agents, reading recommendation workflows, literature analysis, and bibliographic data enrichment.

CVE vulnerability lookup via NVD NIST. Query by CVE ID, keyword, or severity. Returns CVSS score, attack vector, CWEs, and references. Covers 260K+ vulnerabilities.

ENS name ↔ Ethereum address resolution. Forward: pass a .eth name to get the address, avatar, and social profile records. Reverse: pass a 0x address to get its primary ENS name and profile. Returns address, ens_primary, avatar_url, description, twitter, github, discord, telegram, url, and content_hash.

Query EVM contract event logs via eth_getLogs. Filter by contract address, event topic (signature hash), and block range. Returns up to 50 decoded log entries with topics, data, tx hash, block number. Supports Ethereum/Base/Polygon/Arbitrum via free DRPC. $0.004/call — 20% below comparable market rate.

US Congressional vote records from official government XML sources (senate.gov + clerk.house.gov). Search by chamber (house/senate), category (passage, amendment, cloture, nomination, procedural, etc.), or limit. Returns vote question, result (Passed/Failed), yea/nay totals, bill number, and description. 119th Congress (2025–2026). No API key required.

Extracts and parses JSON from mixed-content text. Handles LLM output with JSON embedded in prose, code fences (```json), trailing commas, single-quoted strings, JS-style comments, and bare object keys (JSON5-style). Returns the parsed data, a cleaned JSON string, extraction method used, and any repair applied. Pure text processing — zero external API calls.

Today's top market movers — equity gainers, losers, most-active, and crypto gainers/losers by 24h change. Sourced from Yahoo Finance screener and CoinGecko (free, no API key). Returns symbol, name, price, % change, volume, and market cap. Filter by asset class (equities, crypto, or both) and mover type (gainers, losers, active). Use for pre-trade context, on-chain event correlation, and market-regime detection.

Returns global news coverage and sentiment for any company, stock ticker, or topic. Primary source: GDELT Project v2 (250M+ articles, ML tone scoring). Fallback: Google News RSS with keyword heuristic. Returns article count, avg sentiment tone (−100 negative → +100 positive), top positive/negative headlines, and top news domains. Lookback: 1–30 days (default 3). Results cached 10 min.

US NPI registry lookup — find any licensed US healthcare provider or organization by NPI number, name, state, or specialty. Returns NPI, entity type, name, credentials, specialty/taxonomy, license states, practice address, and active status. 7M+ records from CMS. Use for provider credentialing, healthcare due diligence, billing verification, or AML/KYB screening on medical payments.

Extracts structured content from any public URL: page title, meta description, H1-H3 headings, all links (with text and internal/external flag), and a 500-character text preview. Useful for research agents following link chains from on-chain data, auditing page structure, or seeding downstream text-generation calls.

Extracts all hyperlinks from a webpage. Fetches the target URL, resolves relative links to absolute URLs, and classifies each as internal (same domain) or external. Filter by all/external/internal, cap results with limit. Returns page title, total link count before filtering, and a structured array of {href, text, is_external, domain}. Priced at $0.004 — 20% below orbisapi web-scrape-links ($0.005/call). Upstream: direct HTTP fetch, no API key.

Historical Polymarket crowd accuracy score: % of markets where the final crowd majority correctly predicted the outcome, plus Brier score (calibration quality). Breakdowns by category — crypto, politics, sports, macro, equities, ai. Filter by category and lookback days. $0.004/call — 20% below closest x402 competitor. Source: Polymarket public API (no key required).

Polymarket category activity breakdown: volume, liquidity, market count, and top market per category (crypto, politics, sports, ai, macro, equities). Shows where trading activity is concentrated. Optionally filter to one category. $0.004/call — 20% below closest x402 competitor. Source: Polymarket public API (no key required).

Fetches any public URL and returns the full readable article text as clean Markdown, stripped of navigation, ads, and boilerplate. Returns title, published date (if available), and the complete body ready for LLM summarization, analysis, or RAG ingestion. A $0.004 alternative to exa.ai/contents ($0.007) and web-read ($0.016) for the same full-text extraction primitive.

Fetches and parses any public RSS 2.0 or Atom 1.0 feed. Returns feed metadata (title, description, language, last updated) and structured items (title, link, 400-char summary, author, published date, GUID). Useful for monitoring news, blog posts, GitHub release notes, Reddit RSS, arXiv category feeds, or security advisories.

Returns public profile data for any social platform account. Pass a profile URL (platform auto-detected) or platform + username. Supports GitHub, Reddit, HackerNews, Twitter/X, npm, and Open Graph fallback for any URL. Returns name, bio, follower/karma counts, creation date, and platform-specific metrics. Priced at $0.004 — 20% below comparable endpoints.

Live and recent sports scores for NBA, NFL, MLB, NHL, MLS, EPL, La Liga, Bundesliga, Serie A, Champions League, and more. Returns game status, current score, venue, period/clock, and broadcast info. Uses ESPN's free public scoreboard API. Optional date filter (YYYYMMDD) for historical or upcoming schedule.

Inspects the TLS/SSL certificate of any HTTPS host. Returns validity window (not-before, not-after, days remaining), issuer (CA name, organization), subject (CN), Subject Alternative Names, SHA-256 fingerprint, serial number, and an expiry status (HEALTHY/OK/WARNING/CRITICAL/EXPIRED). Useful for monitoring certificate expiry, auditing TLS configuration, and verifying SAN coverage.

Extracts all hyperlinks from any public webpage. Returns href URLs normalized to absolute URLs with visible link text. Filters out javascript:, mailto:, data: schemes. Optionally restrict to same-domain links, deduplicate, or include #anchor links. Useful for crawlers, sitemap builders, link graph analysis, and content audits.

Bitcoin mining economics and fee-market game theory via mempool.space. Returns current fee rates and pressure tier, miner revenue split (subsidy vs fees), next difficulty adjustment (direction, magnitude, blocks remaining), mining pool concentration (top-3 hashrate share), and mempool backlog size. Useful for agents reasoning about BTC transaction timing, miner incentive structures, or on-chain network health.

Search ClinicalTrials.gov for clinical studies by condition, intervention, or keyword. Returns phase, status, enrollment, sponsor, and dates. NIH primary source — no markup. $0.005/call.

Detects testing frameworks and test coverage presence in a code snippet or GitHub repository. For code snippets: identifies test functions, assertions, mocks, fixtures, and frameworks (Jest, pytest, go test, JUnit, RSpec, etc.). For GitHub repos: counts test files vs source files, surfaces config files, and gives a coverage verdict. No code execution — pure static analysis.

Crypto Fear & Greed Index — current score (0=extreme fear, 100=extreme greed), 7-day trend, 30-day min/max/avg, and trading regime signal. Free alternative.me data updated daily. $0.005/call.

Search DEX trading pairs for any token (by symbol, name, or contract address) across 50+ chains including Ethereum, Solana, Base, BSC, Arbitrum, Polygon, and Avalanche. Returns top pairs by liquidity with real-time price, 24h volume, buy/sell transaction counts, price change %, and buy pressure metric. Free via DexScreener. Ideal for agents tracking on-chain trade flow, entry/exit signals, or multi-chain token prices without maintaining DEX integrations.

Prepares a document for question-answering and RAG pipelines. Chunks the input text at paragraph/sentence boundaries, assigns deterministic chunk IDs, estimates token counts, and extracts document metadata (word count, type, headings). Returns ready-to-embed chunks with overlap support. No LLM or external API — pure text processing. Use mid-task when you've fetched a document and need it split before querying a vector store.

Upcoming US stock earnings — report date, EPS estimate, pre/post-market timing. Filter by ticker or look N days ahead (1–90). Data: Alpha Vantage 3-month calendar, cached 2 hr.

Real-time earthquake intelligence from USGS. Fetch recent global significant quakes (M5.0+ last 7 days) or quakes near a lat/lon (M3.0+ within 500 km). Returns magnitude, depth, location, tsunami flag, and shake intensity. Free USGS FDSN API — no key required.

Historical ECB exchange rates — single date lookup or time-series range. Returns rates for up to 30 major currencies (EUR, GBP, JPY, CAD, CHF, CNY, AUD, KRW, etc.) from 1999-01-04 to present. Free, no key, sourced from Frankfurter/ECB. Use for: tax-date FX rates, historical expense reconciliation, multi-year trend analysis, point-in-time currency conversion. Weekends and holidays return the nearest prior business day. Complements forex-rates (real-time) with retrospective data.

Real-time fiat foreign exchange rates. Base currency defaults to USD; returns rates for all 166 supported currencies, or a filtered subset. Sourced from open.er-api.com (free, no key, daily updates ~00:00 UTC). Supports any ISO 4217 base: EUR, GBP, JPY, KRW, CNY, AUD, etc. Use for: USD→KRW conversion when reading Korean exchange data, cross-border payment amounts, international price normalization, or any multi-currency DeFi workflow.

Current gas prices and EIP-1559 fee recommendations across 6 major EVM chains: Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain. Returns base fee, priority fee percentiles (slow/standard/fast), and estimated ETH/MATIC/BNB cost for a standard 21k-gas transfer. All sourced from free public RPC endpoints — no API key needed. Use before sending on-chain transactions, estimating agent operating costs, or comparing chain fees for routing decisions.

Generates a meme image from 211 built-in templates. Returns a direct PNG URL and embed-ready markdown. Input: template ID (default: drake), top line, optional bottom line, optional middle line (for 3-line templates like panik-kalm-panik). Popular templates: drake, buzz (X Everywhere), fry, fine (This Is Fine), success, panik-kalm-panik, boat (I Should Buy a Boat), aag (Ancient Aliens), blb (Bad Luck Brian). $0.005/call — free upstream, no API key.

Classify US equity market regime (BULL/CORRECTION/BEAR/SIDEWAYS/RISK_OFF) from 5 signals: SPY SMA50/200 trend, VIX level and trend, HYG/IEF credit spread, 10-yr yield, and QQQ/IWM momentum divergence. Returns regime label, per-signal scores, composite confidence 0-100, and narrative summary.

Generate a meme image URL from text. Provide text_top and text_bottom (the two lines of the meme), and optionally a template name. If no template is given, supply a topic keyword and a fitting template will be chosen automatically. Returns a direct image URL you can embed in messages, posts, or web pages. 211 templates available including drake, doge, distracted, buzz, fry, success, gru, oprah, and more. Free upstream: memegen.link (no API key, unlimited requests). Common agent use cases: socia

Solana meme coin quality-volume radar. Returns trending tokens ranked by a quality score that rewards organic buy pressure, liquidity depth, and volume consistency. Filters out low-liquidity rugs. Use for meme coin discovery, social-momentum confirmation, or pump detection. Data: DexScreener free API; no API key required.

Pure-math portfolio rebalancing calculator. Given current holdings (asset names and their current USD values) and target allocations (percentages summing to 100), returns the exact buy/sell dollar amounts needed to reach target weights. Handles partial rebalancing with a drift threshold. No external API — deterministic and instant. Useful for DeFi agents, robo-advisory flows, and automated rebalancing triggers.

OFAC SDN sanctions screening — checks whether a person, company, vessel, or aircraft appears on the US Treasury Specially Designated Nationals list. Returns match score, sanctions program(s), and entity type. Covers ~19,000 entries including RUSSIA-EO14024, SDGT, IRAN, DPRK, TCO, and 30+ programs. Use for payment compliance, KYB/KYC, AML checks, and counterparty due diligence.

Returns today's (or a given date's) sports games with team win-loss records, venue, scheduled time, and live score. Supports MLB, NBA, NFL, NHL, NCAAF, NCAAB. Sourced from ESPN public API — no key required. $0.005/call. Use before prediction-markets or sports-content tasks to get accurate team context.

Returns content-change signals for any public URL: ETag, Last-Modified, Content-Length, and Content-Type via HTTP HEAD. Falls back to GET + SHA-256 of the first 32 KB when the server returns no cache markers. Store the snapshot and re-call periodically to detect changes. Useful for monitoring competitor pricing, news, regulatory filings, or any public page.

Returns active DeFi yield farming pools sorted by 30-day average APY. Sourced from DeFiLlama (free, no key). Each pool includes protocol, chain, symbol, TVL, current APY, 30-day mean APY, impermanent-loss risk, and stablecoin flag. Filter by chain, protocol, minimum TVL, minimum APY, or stablecoin-only pools. Use for portfolio yield research, pre-trade DeFi reconnaissance, or capital allocation decisions.

Checks whether a website is accessible and agent-friendly. Fetches robots.txt, .well-known/ai.txt, and sitemap.xml; inspects HTTP headers (CORS, CSP, rate-limit); and returns a readiness verdict. Useful for agents that need to decide whether to scrape, crawl, or interact with a domain before committing to a workflow. Returns allowed/blocked status, disallowed paths, crawl delay, AI-specific rules, and sitemap URL if present.

Transcribe audio from any publicly accessible URL using OpenAI Whisper. Supports mp3, mp4, m4a, wav, webm, ogg, flac, and wma up to 24 MB. Returns the full transcript text, detected language, and estimated duration in seconds. Optionally accepts an ISO 639-1 language hint to improve accuracy. Useful for processing voice memos, meeting recordings, podcast snippets, interview clips, and audio attached to social media. Undercuts orbisapi.com audio-transcription-api by 24%.

Bitcoin mining game theory and systems dynamics in one call. Returns: selfish-mining profitability threshold (Eyal-Sirer), 51%-attack electricity cost estimate, fee-vs-subsidy revenue split, difficulty epoch trajectory (expansion / contraction / neutral), Nash-equilibrium state for honest mining, and current epoch progress. Sourced from mempool.space and CoinGecko — no API key required. Use for miner-incentive analysis, network security assessment, and pre-investment regime detection.

Returns an Ethereum block header + current stablecoin depeg status in one call. Collapses the eth-block → stablecoin-watch 2-hop chain. Block fields: number, hash, miner, timestamp, gas_used, tx_count. Stablecoin fields: symbol, price, peg_deviation, depeg_status, composite alert level. Supports Ethereum, Base, Polygon, Arbitrum. Free upstreams (DRPC + DeFiLlama), no API key required.

Combined DeFi yield intelligence and market momentum in one call — 33% cheaper than separate yield-farming-active + market-movers calls ($0.009). Returns top yield pools from DeFiLlama, crypto and equity market movers, and a cross-signal layer that flags 'boosted' pools (high APY + rising token) vs 'at_risk' pools (high APY + falling token). Use for capital allocation decisions, pre-trade DeFi context, and portfolio rebalancing signals.

DeFi yield strategy planner. Given a portfolio size and risk tolerance, returns an optimized allocation across top DeFi yield opportunities. Risk tiers: low (stablecoins only, APY < 30%, TVL ≥ $50M), medium (TVL ≥ $10M, APY < 80%), high (TVL ≥ $1M, all assets). Output includes per-position allocation, APY, weekly yield estimate, chain, and 7-day APY trend. Covers 16K+ pools across 400+ DeFi protocols via DeFiLlama.

Domain WHOIS/RDAP lookup. Returns registration date, expiration date, last updated, registrar, nameservers, status flags, and registrant/admin contact info (where available). Uses RDAP — the structured JSON replacement for WHOIS. Useful for domain due diligence, expiry monitoring, and identifying registrar/owner changes.

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.

IMF World Economic Outlook forecasts — current year + 3-year horizon for 180+ countries. Returns GDP growth, CPI inflation, unemployment rate, current account balance (% GDP), government gross debt (% GDP), and fiscal balance (% GDP). Sourced from IMF DataMapper API (no key required). Distinct from World Bank data — these are IMF forward projections updated Apr/Oct. Use for sovereign risk, EM allocation, currency thesis, fiscal sustainability analysis.

Returns active prediction markets from Limitless Exchange with current Yes/No probabilities. Covers short-duration crypto markets (5-min, 15-min BTC/ETH direction), plus longer-term markets. Returns title, implied yes/no prices, expiration, volume, categories, and slug. $0.006/call — free upstream, no API key.

Decode and explain any EVM transaction — in one x402 payment. Returns: transaction status, type (ETH transfer / ERC20 transfer / swap / approval / contract call), human-readable summary, token transfers parsed from logs, gas cost, block context, and explorer URL. Collapses the observed tx-explainer + onesource/block agent seam (18 wallets, 8-day persistence). Supports Base (default), Ethereum, Arbitrum, Optimism, Polygon, Avalanche, BSC. Free upstream: DRPC + public RPC nodes. $0.006/call — 40%

Wallet/address security and reputation check. Detects phishing, sanctions, cybercrime, money laundering, dark-web activity, and blacklisted wallets using GoPlus Labs + SlowMist + BlockSec data. Returns risk score (0-100) and per-flag breakdown. Supports Ethereum, Base, BSC, Polygon, Arbitrum, Optimism, Avalanche, and more.

AI-agent due diligence on any company. Queries SEC EDGAR for public company data (CIK, ticker, SIC, address, filing history) and optionally analyzes the company website for contact details, social profiles, and legitimacy signals. Returns a structured report with risk flags. Accepts company name plus optional domain.

Korean exchange volume leaders + global 24h movers + optional DeFi yield cross-reference in one call. Collapses the printmoneylab/market-movers → ottoai/yield-farming-active agent chain at 53% of the chain cost. Returns top gaining/losing/volume-leading tokens on Upbit (Korea's #1 exchange), global CoinGecko movers, and matching DeFi yield pools when include_yields is true. Korean volume often leads global crypto moves — use for pre-trade momentum confirmation, cross-exchange alpha identificati

Crypto market pulse — latest Ethereum (or Base) block context plus top crypto gainers and losers by 24h change, in a single call. Returns: block_number, timestamp, gas info (base_fee_gwei, gas_used/limit, tx_count), and top movers (symbol, name, price_usd, change_24h, volume_24h, market_cap). Use for crypto portfolio context, on-chain/market correlation, or pre-trade situational awareness. Free upstream: DRPC + CoinGecko. $0.007/call — 30% below the comparable two-endpoint chain.