Every agent-payable API.

Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether this call was paid. Use it to verify your x402 client end to end before spending on data endpoints.

🎰 LuckyMint: Mint 10 reward tokens at once with chances for refunds and jackpots!

Cid Bafkreif7emht2vvddt4wzwrqs6bbfrv4prhzgykhaxsd6kkdcomqz3j3i4 — an agent-callable cid bafkreif7emht2vvddt4wzwrqs6bbfrv4prhzgykhaxsd6kkdcomqz3j3i4 service, payable over x402 (USDC on Base). Provided via gateway.grapevine.fyi. Priced around 0.01 USD per call.

0.05 USDC on base-sepolia

0.05 USDC on base-sepolia

0.1 USDC on base-sepolia

AI safety incident exposure analytics. Per-developer and per-deployer incident counts with recency-weighted exposure_score (1.0 last 30d, 0.5 days 31-90, 0.25 older), risk_domain and SEP-view (Security/Ethics/Performance) distributions, top affected artifacts. Derived over the AVID (avidml/avid-db, MIT) snapshot refreshed daily. The "which AI vendors have the most recent reported safety incidents" call.

Approximate Twitter/X sentiment for a query via web search

Base58 encoder/decoder / Bitcoin / Solana / IPFS CID / Flickr / no ambiguous chars / address encoding / wallet address format. Used by BTC, Solana, IPFS.

Bridge Chains — an agent-callable bridge chains service, payable over x402 (USDC on Base). Provided via gateway.spraay.app. Priced around 0.002 USD per call.

Btc 1m — an agent-callable btc 1m service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.05094 USD per call.

Build a counterparty interaction graph for an address from on-chain transfers - ranks who it sends to and receives from, flagging bidirectional links for cluster and AML analysis, on Base. counterparty graph, address relationships, transaction graph, aml analysis, wallet connections, fund flow

Buy Crassula Buddhas Temple — an agent-callable buy crassula buddhas temple service, payable over x402 (USDC on Base). Provided via underground.substratesymposium.com. Priced around 0.99 USD per call.

Buy Null Pointer Exception — an agent-callable buy null pointer exception service, payable over x402 (USDC on Base). Provided via underground.substratesymposium.com. Priced around 1.99 USD per call.

Buy Stack Overflow — an agent-callable buy stack overflow service, payable over x402 (USDC on Base). Provided via underground.substratesymposium.com. Priced around 1.99 USD per call.

Buy String Of Pearls — an agent-callable buy string of pearls service, payable over x402 (USDC on Base). Provided via underground.substratesymposium.com. Priced around 0.99 USD per call.

Buy Syntactic Sugar — an agent-callable buy syntactic sugar service, payable over x402 (USDC on Base). Provided via underground.substratesymposium.com. Priced around 1.99 USD per call.

Latest-day breakdown of composite signal trigger stats: per-composite triggered_asset_count, breadth %, top-triggering assets. Snapshot of where the 9 IC-weighted composites are actually firing across 200+ assets right now. Complements /signals/composite/breadth (universe-wide) with per-composite drill-down.

Chain Block Number — an agent-callable chain block number service, payable over x402 (USDC on Base). Provided via store.agentexchange.work. Priced around 0.001 USD per call.

Check an npm package, PyPI package, or GitHub repo and return a DepScout install verdict.

Chinese to Pinyin with tones (汉字转拼音). Query: ?text=...&style=tone|notone (default tone)

Score one name or a whole watchlist in one read. GET /api/board/name?sym=NVDA (or ?sym=NVDA,AMD,MSFT — up to 10 names, one price) returns each name's full Coil read: opportunity 0-100 + percentile, entry quality and state (READY / SETUP / WAIT / CHASE / FALLING), hold strength, growth score, overnight gap-risk, leadership flag and dollar volume, plus its book's regime. Any S&P 500, Nasdaq-100 or macro name. ~5-min refresh. Research, not advice.

CoinStats Fear & Greed Index historical chart — market sentiment over time

Composed yield allocation recommender. Fans out 3 parallel /api/yield calls at low/medium/high risk tiers for the same amount + duration, then returns a recommended portfolio split + 2-sentence rationale. Allowed bands: conservative / balanced / aggressive / bespoke. 6h Upstash cache bucketed by amount tier × duration × chain.

Comprehensive NPM package safety report combining npm registry metadata, OSV vulnerability database, npms.io quality scores, and GitHub repo health. Returns risk_summary (low/medium/high/critical), CVE breakdown by severity, maintainer info, dependency counts, last-commit recency, archival status. Use ?package=react or ?package=react&version=18.2.0. Built for AI code-review agents and supply-chain auditors.

Convert APT to USD at live price. Pass ?amount=1 for value in US Dollar. Aptos兑换美元换算。アプトスを米ドルに換算。Convertir Aptos a dólar. 앱토스를 달러로 환전. apt to usd, Aptos convert.

Convert a hex color code to RGB and HSL values. Pass ?hex=FF5733 (with or without #). Returns r, g, b, h, s, l values and CSS strings. Uses Node.js built-in math. Zero external dependencies.

Cross-validated token price aggregated from multiple independent sources (Moralis, DefiLlama) with spread and a reliability rating that flags manipulation or illiquidity risk - protects trading agents from acting on a single manipulated or stale price feed. price cross check, multi source price, price validation, token price reliable, price manipulation check, price oracle compare

Crypto ETF Sentinel — Launch-timing tracker for ``launch_imminent`` US spot crypto ETF issuers: days-waiting + percentile vs the historical 8-A12B → CERT/EFFECT distribution. Returns the historical baseline in ``meta`` on every call, so the response is useful even when the current cohort is empty. Indicative timing data, not a predicted launch date.

Crypto fortune cookie

Current crypto prices via CoinGecko (free tier). Returns price in vs_currency, 24h change, market cap, volume, last update. Use ?id=bitcoin&vs=usd or ?id=bitcoin,ethereum,solana&vs=usd,eur. Built for AI agents for portfolio tracking and on-chain context.

Daily alpha/opportunity report

Expiry Btc — an agent-callable expiry btc service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.05 USD per call.

Fetch any URL and return clean text content only (no markdown formatting). Minimal output optimized for token-efficient LLM consumption. Removes ads, navigation, and boilerplate.

Compute XIRR and MOIC from irregular cash flows with exact dates. Standard for private equity, real estate, and venture return calculations.

Find who deployed a contract and in which transaction on Ethereum mainnet - lets agents verify a contract's deployer and origin before trusting it, provenance data LLMs cannot look up. contract creator, who deployed, contract deployer, deployment tx, contract origin, contract provenance

Fresh Markets Watch — newly created DeFi pools/markets sorted by APY with TVL, protocol, token pair, and risk warnings for new pools. Supports ?chain=base&hours=24&demo=true.

Horizon Pulse — real-time crypto market data + momentum signals (BTC/ETH/SOL) tuned for AI agents

I-Ching seeded divination (指定种子起卦) - reproducible coin toss. Query: ?seed=any-string

IP geolocation via ipapi.co. Returns country, region, city, lat/lng, timezone, ISP, ASN. Use ?ip=8.8.8.8. Built for AI agents detecting user location, fraud signals, and content routing.

Institution — an agent-callable institution service, payable over x402 (USDC on Base). Provided via citepulse.theaslangroupllc.com. Priced around 0.15 USD per call.

Forward liquidation cluster map + recent prints for all 16 crypto assets. Part A: estimated liq price levels for 5x/10x/25x/50x leverage bands, modeled from open interest and mark price — no new upstream source. Part B: real liquidation prints from OKX public API (no auth). Returns cluster map, nearest_long/short clusters, squeeze_bias, and honest disclaimers. Supports BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT-USD. Pay-per-call via x402.

List supported RPC chains and methods.

Live AAPL Apple Inc stock quote (NASDAQ). Zero-param: GET returns current price. 苹果股票实时报价。アップル株価。Cotización Apple. 애플 주가. AAPL stock price, apple inc quote.

Live AMD AMD stock quote (NASDAQ). Zero-param: GET returns current price. AMD超微股票实时报价。AMD株価。Cotización AMD. AMD 주가. AMD stock price, amd quote.

Live BABA Alibaba stock quote (NYSE). Zero-param: GET returns current price. 阿里巴巴股票实时报价。アリババ株価。Cotización Alibaba. 알리바바 주가. BABA stock price, alibaba quote.

Live EUR to JPY exchange rate (Euro / Japanese Yen). Zero-param: GET returns current rate. 欧元兑日元实时汇率。ユーロ/円 為替レート。Tipo de cambio euro-yen. 유로 엔 환율. eur jpy, eur-jpy, EUR/JPY forex quote.

Live Feed Paid — an agent-callable live feed paid service, payable over x402 (USDC on Base). Provided via agentworld.me. Priced around 0.001 USD per call.

Live QQQ Invesco QQQ Nasdaq 100 ETF ETF quote (NASDAQ). Zero-param: GET returns current price. 纳指100ETF实时报价。ナスダック100 ETF株価。Cotización ETF Nasdaq 100. 나스닥100 ETF 주가. QQQ etf price, invesco qqq nasdaq 100 etf quote.

Live crypto price + 24h change, market cap & volume for any coin — for trading agents. Input: ?symbol=btc