| Check X402 API Run a fast live probe for one x402 endpoint and summarize challenge/payment-flow readiness. | vercel.app | - | $0.005 | listed |
| Chf Cad Chf Cad — an agent-callable chf cad service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.01 USD per call. | myceliasignal.com | - | $0.01 | listed |
| Chf Jpy Chf Jpy — an agent-callable chf jpy service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.01 USD per call. | myceliasignal.com | - | $0.01 | listed |
| Cid API Cid Bafkreihqoybdolvloa6pqlksh6sggaf24vncv2kynn77mfblx3nue67qye — an agent-callable cid bafkreihqoybdolvloa6pqlksh6sggaf24vncv2kynn77mfblx3nue67qye service, payable over x402 (USDC on Base). Provided via purple-peculiar-wolf-522.dev-mypinata.cloud. Priced around 0.001 USD per call. | dev-mypinata.cloud | ai | $0.001 | listed |
| Circulating, total, max supply + FDV for a token Circulating, total, max supply + FDV for a token | agenticfi.wtf | - | $0.001 | listed |
| Citation Lookup And Reference List For A Paper API Citation lookup and reference list for a paper. Given a DOI, arXiv id, OpenAlex id, or PMID, returns its references (the works it cites) and its cited-by list (recent works that cite it), plus full metadata and citation count — for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar. | kadec0.xyz | - | $0.03 | listed |
| Cloudflare API Extract clean Markdown from any URL. Renders JavaScript before extraction. | stableflare.dev | - | $0.02 | listed |
| Cloudflare API Render any URL or HTML as a PDF. Supports custom paper size, margins, landscape, and background printing. | stableflare.dev | - | $0.05 | listed |
| Cny Cad Cny Cad — an agent-callable cny cad service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.01 USD per call. | myceliasignal.com | - | $0.01 | listed |
| CodePulse Agentic API Polls the disposable inbox for messages and verification codes. | workers.dev | - | $0.01 | listed |
| CodePulse Agentic API Queries target URL headers to score security configurations (HSTS, CSP, X-Frame-Options). | workers.dev | - | $0.01 | listed |
| CodePulse Agentic API Fetches TXT, MX, A, CNAME, and CAA records for a domain via Cloudflare DNS-over-HTTPS. | workers.dev | - | $0.01 | listed |
| CodePulse Agentic API Generates a temporary disposable inbox address using the free 1secmail.com service. | workers.dev | - | $0.01 | listed |
| Coin Flip Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails. | vercel.app | - | $0.001 | listed |
| CoinGecko Crypto Price & Data Crypto token price in USD, EUR and more — real-time spot prices for one or many coins by CoinGecko id (bitcoin, ethereum, solana). | x402atlas.com | - | $0.005 | listed |
| CoinGecko Crypto Price & Data Top crypto coins ranked by market cap — paginated market data (price, market-cap rank, symbol) in any currency, CoinGecko-sourced. | x402atlas.com | - | $0.005 | listed |
| CoinGecko Crypto Price & Data OHLC candlestick data for crypto — daily open/high/low/close candles over 1-365 days for any coin by CoinGecko id, chart-ready. | x402atlas.com | - | $0.005 | listed |
| CoinGecko Crypto Price & Data Trending crypto coins in the last 24h — the most-searched tokens on CoinGecko right now with name, symbol and market-cap rank. | x402atlas.com | - | $0.005 | listed |
| CoinGecko Crypto Price & Data Historical crypto price on a specific date — price, market cap and 24h volume snapshot for any coin by CoinGecko id, in USD or more. | x402atlas.com | - | $0.005 | listed |
| CoinGecko spot price Live spot price (and optional 24-hour change) for one or more coins from CoinGecko's public Simple Price endpoint. Identify coins by their CoinGecko ID slug (bitcoin, ethereum, solana, usd-coin, …). Defaults to USD; pass a `vsCurrency` to denominate in EUR, JPY, ETH, BTC, etc. | agent402.tools | - | $0.001 | listed |
| Commerce Escrow Status 🆕 First tooling for Base's Commerce Payments protocol (AuthCaptureEscrow): reconciles two-phase auth/capture payments — in escrow, captured, charged, voided, refunded, or payer-RECLAIMABLE because the operator missed the capture window. Filter by payment= (infoHash), payer=, receiver= or operator=, or omit everything for the network feed. The order-reconciliation read merchants and agents need before trusting onchain commerce. | com.tr | - | $0.04 | listed |
| Commodities Copper Commodities Copper — an agent-callable commodities copper service, payable over x402 (USDC on Base). Provided via Apify. Priced around 1 USD per call. | myceliasignal.com | - | $1.00 | listed |
| Commodities Natgas Commodities Natgas — an agent-callable commodities natgas service, payable over x402 (USDC on Base). Provided via Apify. Priced around 1 USD per call. | myceliasignal.com | - | $1.00 | listed |
| Company Intel API Returns the linked company profile, NAICS industry classification, and downstream business-sector impact paths for one WARN event — use it to see who's affected and which vendors feel it next | forgemesh.io | - | $0.03 | listed |
| Company Name Search Across Jurisdictions API Company name search across jurisdictions. jurisdiction=lei searches the global GLEIF LEI database (all countries); jurisdiction=jp searches the official Japan National Tax Agency corporate registry. Returns registered legal names, identifiers, and addresses. KYB / counterparty verification primitive. | japanagent.dev | - | $0.002 | listed |
| Compliance Check Combined counterparty screening for an address: direct OFAC sanctions match, EOA/contract profile, and (for contracts) risk flags — rolled into a single recommendation (blocked / review / clear). Built for compliance agents. | com.tr | - | $0.03 | listed |
| Compound interest Compute future value of a principal under compound interest. Returns future value, total interest earned, and the effective annual rate (APY) given the compounding frequency. Matches Excel's FV(rate, nper, 0, -principal) and the classic (1+r/n)^(nt) textbook formula. | agent402.tools | - | $0.002 | listed |
| Compression compare Run the same input through gzip, brotli, and raw deflate at max settings and report each one's output size and ratio. Use this to decide which algorithm to actually use - the answer depends on your content (binary often resists compression entirely; English prose squeezes well with brotli; JSON sits in between). | agent402.tools | - | $0.001 | listed |
| Compute Orchestrator API Compute orchestrator - autonomous multi-step goal execution | oneshotagent.com | - | $0.001 | listed |
| Conditions API Reference catalog of trade/quote condition codes (the numeric `conditions` seen on trades) with names, types, data types, and SIP mappings. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402. | vercel.app | - | $0.01 | listed |
| Congress Stock Trades US congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act — politician, ticker, amount, and date. | kadec0.xyz | - | $0.05 | listed |
| Consumer Product Recalls Consumer product recalls. A normalized multi-agency recall feed spanning FDA, CPSC, and NHTSA — product, reason, company, classification, and severity. | kadec0.xyz | - | $0.02 | listed |
| ConsumerPulse US consumer-demand signal (retail sales) | lonestaroracle.xyz | - | $0.05 | listed |
| Contract Danger Scanner Reads a verified contract's ABI and flags owner-callable abuse functions: mint (dilute), pause (freeze exit), blacklist (block your wallet), setFee/setTax (tax you after entry), withdraw/sweep (pull funds), upgrade (swap logic). An unverified contract is itself a red flag. Diligence a price feed can't give. | com.tr | - | $0.04 | listed |
| Contract Introspection Via ETH Call API Contract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface support | onesource.io | - | $0.005 | listed |
| Correlation (Pearson) Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated with a macro indicator? Are two FRED series moving together? | agent402.tools | - | $0.001 | listed |
| Correlation API Pearson correlation of a coin's returns vs BTC (-1 to +1) over the period. Use to judge diversification and whether an alt is moving independently or just tracking BTC. A correlation coefficient, not a beta or causation claim. | swaphunt.dev | - | $0.003 | listed |
| Count Count characters, words, lines, and (optionally) occurrences of a substring in text. | agent402.tools | - | $0.001 | listed |
| Cron next runs Parse a 5-field cron expression and return the next N run times (UTC). | agent402.tools | - | $0.001 | listed |
| Crypto Data Agent Top DeFi yield pools with APY/TVL, filterable by chain (DefiLlama). | vercel.app | - | $0.002 | listed |
| Crypto Data Agent Current crypto prices for up to 25 coins (DefiLlama). | vercel.app | - | $0.002 | listed |
| Crypto Dex Market Brief API For Agents API Crypto Dex market brief API for agents. Combines market price, volume, funding heat, order book pressure, and Dex trading-agent output for one asset or perp pair. | seerium.xyz | - | $0.001 | listed |
| Crypto Perp Funding & Sentiment Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and signals cover, as a clean snake_case envelope. | x402atlas.com | - | $0.005 | listed |
| Crypto Perp Funding & Sentiment Crypto perpetual-futures funding-rate scanner — the top funding rates ranked across ~100 Binance perp markets (rate, 8h %, who-pays-who direction, mark price, next funding time). Spot funding arbitrage and crowded positioning in one call. | x402atlas.com | - | $0.02 | listed |
| Crypto Perp Funding & Sentiment Crypto Fear & Greed index — the current market-sentiment score (0-100) and its label (Extreme Fear … Extreme Greed), as a clean snake_case envelope. | x402atlas.com | - | $0.005 | listed |
| Crypto Spot Price Current spot price for crypto trading pairs. Input: pair — a single pair (BTC-USD) or up to 10 comma-separated pairs (BTC-USD,ETH-USD,SOL-USD) returned in ONE call for the same price — poll a whole portfolio per tick. Returns amount and currency per pair. Real-time from Coinbase. | shizu.me | - | $0.004 | listed |
| Crypto TA Signals Multi-indicator technical analysis (SMA/EMA crosses, Bollinger, RSI, candlestick patterns, support/resistance, trendlines, experimental Elliott Wave) for any crypto pair. | tradesnack.com | - | $0.01 | listed |
| Crypto global market Global crypto market snapshot: total market cap, total 24h volume, BTC dominance, ETH dominance, active coin count, active exchange count, and 24h market-cap change %. Returned in a chosen vs_currency (default usd). Backed by CoinGecko /global. | agent402.tools | - | $0.008 | listed |
| Crypto trending Trending coins on CoinGecko in the last 24 hours, ranked by user search activity on the site (currently ~15 results). Includes coin id, symbol, market cap rank, current price (BTC-denominated), and score. Useful signal for detecting narrative shifts before they hit price charts. | agent402.tools | - | $0.001 | listed |
| CryptoMacro Intelligence Agent AI crypto analyst, pay-per-call in USDC: ask any question on Bitcoin, Ethereum, altcoins or macro; the agent picks live market data tools (prices, funding rates, open interest, Fear & Greed, macro rates), runs them and returns a structured JSON verdict — scenario, confidence, key levels, invalidation. POST {question}. | vercel.app | - | $0.25 | listed |