| Macro API Upcoming macro events (FOMC, CPI, NFP, etc.) with date, country and impact level, filterable to high-impact only. Use to avoid trading into scheduled volatility or to plan around it. Forward calendar; for past actuals use /macro/history. | swaphunt.dev | - | $0.003 | listed |
| Market Fear & Greed Index Market fear & greed index. Aggregated investor sentiment from CNN Fear & Greed, the crypto Fear & Greed index, and the VIX volatility gauge. | kadec0.xyz | - | $0.05 | listed |
| Markets Prediction Markets Prediction — an agent-callable markets prediction service, payable over x402 (USDC on Base). Provided via store.agentexchange.work. Priced around 0.01 USD per call. | agentexchange.work | - | $0.01 | listed |
| Metadata For One Noaa Co Ops Tide Station API Metadata for one NOAA CO-OPS tide station: name, lat/lon, tidal and Great Lakes flags, SHEF code, and references to its datums and sensors. Keyless NOAA Tides and Currents. For agents resolving station details. | suverse.io | - | $0.08 | listed |
| Msvi Bitcoin Volatility Index API MSVI Bitcoin volatility index — composite of realized vol, implied vol, term structure, funding stress and put/call ratio — Ed25519 signed attestation | myceliasignal.com | - | $0.05 | listed |
| Msxi Bitcoin Market Sentiment Index API MSXI Bitcoin market sentiment index — funding rate, long/short ratio, open interest momentum and liquidation signals combined — Ed25519 signed attestation | myceliasignal.com | - | $0.05 | listed |
| Multi-Engine Web Search Multi-engine metasearch. One query fanned out across 2-3 search engines (Brave, Yahoo, Yandex) with results deduplicated by URL and merged by reciprocal-rank fusion — consensus ranking across engines instead of one engine's bias, with per-engine rank attribution on every result. | kadec0.xyz | - | $0.05 | listed |
| NetIntel Fetch public metadata for any GitHub repository — stars, forks, open issues, language breakdown, license, contributors, last commit date, topics, and an activity/health score — so agents can evaluate dependencies, research projects, and assess open source health without the GitHub API complexity. Pass repo as ?repo=owner/repo (GET) or {"repo":"owner/repo"} (POST). | netintel.dev | - | $0.03 | listed |
| NetIntel One call combines domain email authentication (SPF/DKIM/DMARC), email-address intelligence (deliverability, disposable/role detection), and an optional password breach check into a single email-trust report — each section run concurrently with graceful partial-failure handling — so agents can fully vet an email and its domain in one request. | netintel.dev | - | $0.15 | listed |
| NetIntel Fetch and parse any RSS 2.0 or Atom feed URL and return structured articles with title, link, description (truncated to 500 chars), author, publish date, and categories — so agents can monitor content sources, build news pipelines, and process any feed without building their own XML parser. A URL that isn't a parseable feed still returns 200 with feed_type:"unknown", empty items, and a parse_failed finding. | netintel.dev | - | $0.01 | listed |
| NetIntel Check an IP address against AbuseIPDB and AlienVault OTX threat feeds. Returns a composite risk score, threat categories, malware families, and full source data. | netintel.dev | - | $0.05 | listed |
| NetIntel One premium call returns a complete six-part domain profile — DNS records, SSL certificate, WHOIS registration, cloud fingerprint, technology stack, and security headers — each section run concurrently with graceful partial-failure handling, so agents get an entire domain workup in a single request instead of orchestrating six. | netintel.dev | - | $0.25 | listed |
| NetIntel Parse any cron expression into a human-readable explanation, validate its syntax, compute the next 5 scheduled run times (UTC), and detect common patterns (daily, weekly, monthly, hourly) — accepts standard numeric fields plus JAN-DEC/SUN-SAT name tokens — so agents can understand, validate, and work with cron schedules without implementing their own cron parser. | netintel.dev | - | $0.03 | listed |
| News API Recent crypto news headlines each scored 1-10 for trading impact by an LLM (qwen3:8b), with a bullish/bearish/neutral tag. Filter by category, minimum score and lookback hours. Use to surface market-moving stories; for the aggregate read use /sentiment/summary. | swaphunt.dev | - | $0.005 | listed |
| News Sentiment API Financial news with sentiment analysis from Marketaux. Per-symbol sentiment aggregation. | memoryapi.org | - | $0.005 | listed |
| Orcpin On-chain wallet snapshot on Base: native ETH and tracked ERC-20 token balances (USDC, WETH) plus account flags (contract status, transaction count) and derived metrics (wallet type, activity tier, gas runway), anchored to a specific block. Factual wallet balance and holdings lookup for AI agents — portfolio and on-chain data API. | orcpin.dev | - | $0.02 | listed |
| Order Flow Hhi API DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Order Flow HHI measures concentration of signed order flow across the specified window. Discovery examples use the latest 30m window. | dripmetrics.ai | - | $0.05 | listed |
| Orderbook Pressure API Crypto order book API and Dex orderbook pressure feed for agents. Returns bid/ask depth imbalance, buy-side or sell-side pressure, microprice bias, spread in bps, notional liquidity, funding, and confidence for active crypto Dex symbols. | seerium.xyz | - | $0.001 | listed |
| Otto AI Trending DEX pools right now — Base, Ethereum, Solana, Polygon, BSC, Arbitrum, Optimism, Avalanche, or network=all for cross-chain across those same 8. Top 10 hottest pools ranked by GeckoTerminal 24h trending: pool address, DEX, price USD, 24h price change, 24h volume, liquidity (TVL), FDV, 24h txns as flat JSON numbers. Trending pools, hot pools, top movers, momentum screener, what is pumping. $0.001 per call. | ottoai.services | - | $0.001 | listed |
| Otto AI Robinhood Chain memecoin intelligence: the rug-screened RH Chain (chainId 4663) movers. Hard liquidity + wash-volume gates filter the $0-liquidity honeypots that fake $1M volumes; every survivor carries rug-risk flags (thin liquidity, vol/liquidity anomaly, pool age, CoinGecko listing) plus trusted-KOL mentions with verbatim quotes and a synthesized RH Chain sentiment read whose availability is explicit in summaryStatus. What is pumping AND whet… | ottoai.services | - | $0.001 | listed |
| Otto AI 13F holdings for any SEC-filing manager (hedge funds, asset managers) by CIK or manager ticker: latest 13F top 20 positions, amendments applied (hourly snapshot, ~1h correction lag): issuer, CUSIP, value in whole USD, share/principal amount (SH/PRN), put/call flag, reported value, position count. Whale tracking from the primary source. 13F holdings, hedge fund positions, institutional ownership. Public-domain SEC EDGAR. $0.003 per call. | ottoai.services | - | $0.003 | listed |
| Otto AI Live + reference foreign-exchange (forex) rates, base USD. LIVE near-real-time mid quotes for the 12 most-traded currencies (EUR, GBP, JPY, CHF, CAD, AUD, NZD, CNY, HKD, SGD, SEK, KRW), refreshed every minute with an honest market-open/stale flag, PLUS the official ECB daily reference table for ~30 currencies. Derive any cross-rate or pair. For agents pricing cross-border ops, treasury, invoicing and FX conversion. Keyless, pay-per-call. | ottoai.services | - | $0.001 | listed |
| Otto AI Structured token fundamentals by ticker symbol (resolves to the top-market-cap asset matching it): price, market cap, FDV, rank, 24h volume, full supply breakdown (circulating/total/max), ATH + drawdown from ATH, ATL + recovery, ROI windows (24h/7d/30d/60d/1y), categories, and project links — clean JSON an agent can consume field-by-field. Fundamentals snapshot, not a streaming price feed. | ottoai.services | - | $0.003 | listed |
| Otto AI Which protocols earn the most — and who is accelerating? Top 30 DeFi protocols by 24h fees, each with revenue, take-rate (the cut the protocol keeps vs fees users pay), 7d/30d trend and category, plus total DeFi fees & revenue. A fundamentals screen (fee/revenue economics), distinct from TVL. Sourced from DefiLlama (public). Refreshed hourly. | ottoai.services | - | $0.001 | listed |
| Otto AI Equity intelligence for any US-listed company by ticker: latest revenue & net income with YoY growth, net margin, EPS, total assets/liabilities, leverage and cash, plus the most recent material SEC filings (10-K/10-Q/8-K) and an AI read on what matters. Sourced from SEC EDGAR (public domain). Fundamentals/filings intel — not a price feed. | ottoai.services | - | $0.003 | listed |
| Oyapicks API OyaPicks: live prediction-market data across Polymarket and Alpha Arcade, including cross-venue arbitrage gaps where the same outcome is priced differently. | oyapicks.app | - | $0.05 | listed |
| Pay 1 USDC → Get 5,000 $PAY → Your “Payment Moment” Poster. Pay 1 USDC → Get 5,000 $PAY → Your “Payment Moment” Poster. | vercel.app | ai | $1.00 | listed |
| Pending Block API Pending block - transactions not yet mined, via eth_getBlockByNumber("pending") | onesource.io | - | $0.01 | listed |
| Per Agent Budget Enforcement API Per-agent budget enforcement — track an agent's cumulative spend against a cap and block overspend. Part of x402 Agentic, the payment-trust suite for AI agents on Base USDC. | x402agentic.ai | - | $0.01 | listed |
| Places & Local Business Search Google Maps local business search — find places by query and map location (coordinates viewport), returning ratings, reviews, address, phone, website, hours & service options as clean JSON. | x402atlas.com | - | $0.02 | listed |
| Polymarket Intelligence API Ranked Polymarket market-flow screener with factual concentration and liquidity-compatibility fields for the observed window. | polym.uk | - | $0.05 | listed |
| Polymarket Whale Wallet API For Agents API Polymarket whale wallet API for agents. Returns whale trades, wallet metadata, tier, score, and activity for one tracked 0x wallet. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Arbitrage API Paid x402 endpoint for arbitrage opportunities between prediction-market platforms. | solenrich.com | - | $15,000.00 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Prediction Market Data API Paid x402 endpoint for newly created prediction-market data and emerging betting topics. | seerium.xyz | - | $0.001 | listed |
| Pro API Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, up to 500 characters, returned as WAV audio. Use it to: speak an urgent alert faster, slow a reading for clarity, tune synthesis quality against latency, produce a paced voice cue for a UI, generate a rushed or calm-toned notification. USDC on Base via x402, no API key. | forgemesh.io | - | $0.003 | listed |
| Pro Long API Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, for 501-2000 characters, returned as WAV audio. Use it to: pace a longer narration like a podcast intro, read a multi-paragraph script at a chosen speed, produce a slow deliberate reading of instructions, voice an extended alert or briefing. USDC on Base via x402. | forgemesh.io | - | $0.006 | listed |
| Qonoro Address Normalizer Parse and normalize postal addresses into structured components. Returns address number, street, city, state, ZIP, and USPS-formatted output. Postal address parsing and normalization. Sub-second. x402-native. | qonoro.ai | - | $0.005 | listed |
| Qonoro Phone Validator Validate phone numbers: E.164 format, country detection, line type (mobile/landline/VOIP/toll-free), and risk score. Deterministic, sub-second. x402-native. | qonoro.ai | - | $0.01 | listed |
| Quantum Circuit Simulation (qiskit Aer) API Quantum circuit simulation (Qiskit Aer): statevector, density-matrix (noise), stabilizer, and MPS methods; shots, expectation values, and seeded determinism. Sync tier up to 24 qubits. Paid in USDC on Base or Solana. | surewhynot.app | - | $0.01 | listed |
| Quartermaster AI Summarize AI summary of any public webpage: fetches the URL, extracts readable content, and returns a short, medium, or long factual summary. | surewhynot.app | - | $0.01 | listed |
| Quartermaster Basename Resolver Resolve Basenames (.base.eth) to wallet addresses on Base. | surewhynot.app | - | $0.001 | listed |
| Quartermaster Content Moderation Content-safety classification (Llama Guard): safe/unsafe plus category codes. | surewhynot.app | - | $0.002 | listed |
| Quartermaster DNS Lookup Resolve DNS records using DNS-over-HTTPS and return structured JSON for infrastructure, security, and agent workflows. | surewhynot.app | - | $0.001 | listed |