Every agent-payable API.

Check whether a smart contract's source code is verified on the block explorer, with contract name, compiler and proxy status across Ethereum/Base/Arbitrum/Optimism/Polygon/BSC - a pre-interaction safety check agents need that LLMs cannot perform live. contract verified, source code verified, contract audit, unverified contract, contract safety, is contract safe

China provincial divisions (中国省级行政区) - 34 provinces with codes, capitals, and Chinese names. No params.

Chinese Pinyin — an agent-callable chinese pinyin service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.001 USD per call.

Cid Bafkreibed3rrvo5cmzfwvytbmkqpgn5m7ays5cotf2agweycev5ibirl4m — an agent-callable cid bafkreibed3rrvo5cmzfwvytbmkqpgn5m7ays5cotf2agweycev5ibirl4m service, payable over x402 (USDC on Base). Provided via testgateway.mattober.com. Priced around 0.00001 USD per call.

Cid Bafybeibflo5qiryeuupzuayowoi5qsillk3bij7yaizld2jvma3ah6cgdi — an agent-callable cid bafybeibflo5qiryeuupzuayowoi5qsillk3bij7yaizld2jvma3ah6cgdi service, payable over x402 (USDC on Base). Provided via x402hackathon.mypinata.cloud. Priced around 1 USD per call.

Cid Bafkreifqwob76i3msvcy7i5cevl7vjuode2kezzumvjxudnoarbuvwnw3y — an agent-callable cid bafkreifqwob76i3msvcy7i5cevl7vjuode2kezzumvjxudnoarbuvwnw3y service, payable over x402 (USDC on Base). Provided via peach.mypinata.cloud. Priced around 0.001 USD per call.

CodeNut Credit x402 Offer - $10 to get 100x worth of CodeNut credits!

Is crypto risk-on right now? One $0.001 answer: whether the BTC 200-day master gate is open or closed, the LONG/CASH state for the BTC and ETH sleeves, and the one-line verdict — all evaluated on UTC daily closes by a long-only rules engine. The cheapest crypto regime check on x402: poll it every cycle, buy the fuller reads only when the gate state changes. Research, not advice.

Bitcoin and Ethereum trend signal — is crypto risk-on right now? One read returns the long-only trend state for BTC and ETH (LONG or CASH per sleeve), each sleeve's 50-day trend gate, and the BTC 200-day master gate that overrides both — all evaluated strictly on UTC daily closes, with live price and day change. A rules-based regime verdict for agents, not raw price data. Long-only: the answer is in or out, never short. Research, not advice.

Index scores for trading agents — how strong is each major index right now? One read returns the scored index row per book: S&P 500 (SPY) and Nasdaq-100 (QQQ) plus the macro and BTC/ETH crypto books — 0-100 opportunity score, percentile, green/yellow/red light and entry state for each index, with every book's regime verdict alongside. The cheapest top-down read of the whole tape. Refreshed ~5 min in market hours, timestamped. Research, not advice.

The whole market read in one small answer — a morning brief for agents: the regime verdict per book (S&P 500, Nasdaq-100, macro, BTC/ETH crypto), today's top-5 ranked buy candidates, the day's biggest gainers and losers, and the crypto trend-gate state. One $0.02 call instead of four — the cheapest complete top-down read on x402. Refreshed ~5 min in US market hours, timestamped. Research, not advice.

Point-in-time score history — what did Coil actually publish on a given date? Returns the as-published per-name scores (opportunity percentile, entry quality, hold strength) for every S&P 500 / Nasdaq-100 / macro name on any archived date (?date=YYYY-MM-DD; omit for the list of archived dates). Lookahead-bias-clean by construction: served verbatim from the append-only publish log, never recomputed. Immutable: one new date per session, never revised. Research, not advice.

Scores for the most-traded US stocks — the liquid mega-caps agents actually trade. One read returns the top names by 20-day average dollar volume in every S&P 500 sector, each scored: opportunity 0-100 plus board percentile, entry state (READY / SETUP / WAIT / CHASE / FALLING), hold strength, leadership flag, and the dollar-volume figure that ranked it. High-liquidity names only, no illiquid tail. Refreshed ~5 min in market hours. Research, not advice.

TradFi risk-on/risk-off in one $0.003 call for crypto agents. Returns the S&P 500 and Nasdaq-100 regime state, how many equity sectors are green out of 11 (breadth), whether the permission ladder allows risk at all, and the same engine's BTC/ETH trend gate — size against equity risk appetite instead of guessing. Regime states flip rarely (days, not minutes); recomputed ~5-9 min in-session by a live long-only engine scoring ~560 US names. Research, not advice.

CoinGlass provides users with comprehensive cryptocurrency derivative market data, including price trends, cryptocurrency futures trading volumes, open interest, funding rates, liquidations, options data, etc., through multiple data analysis methods and technical means, and supports users to customize indicators and strategies. | Powered by Questflow

Collectible value & price check: trading card value, graded card (PSA/BGS/CGC) price, coin value, comic & vinyl record price. Returns current market value by grade and condition with recent sold comparables (eBay/Discogs) for any item: cards, coins, comics, watches, sneakers, vinyl. Worldwide. For collector and investor agents.

Color — an agent-callable color service, payable over x402 (USDC on Base). Provided via keyronne.com. Priced around 0.001 USD per call.

Complete directory of all known x402-enabled services with pricing, categories, and status. Curated by httpay.xyz.

Complete wallet portfolio breakdown showing all token holdings and USD values. (with AI analysis)

Composed DAO governance translator. Takes a Snapshot or Tally proposal URL, fetches structured data + summary via /api/governance/summarize, then produces a 2-3 sentence plain-language translation + domain band (economic_param / treasury / code_upgrade / governance_meta / social_signal). 1-year cache — proposals are immutable.

Composed token classification. Fans out to token_info, token_security, protocol_tvl and returns a single archetype (stablecoin / blue_chip / mid_cap / memecoin / wrapped / governance / unverified) plus a plain-language verdict.

Composed wallet behavioral thesis. Fans out to balance, wallet_persona, wallet_pnl, wallet_anomaly and returns a plain-language summary of the wallet's investing posture plus archetype (trader / hodler / yield_farmer / mev_bot / compromised / inactive).

Composed wallet threat brief. Fans out to wallet_risk, wallet_anomaly, privacy_mixer_risk, budget_guardian, and wallet_persona and returns a 2-3 sentence security verdict + band (clean / watch / elevated / critical). Replaces a manual 5-call security audit walk.

Compute readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, ARI, Coleman-Liau, Gunning Fog, SMOG). Returns all indices plus complexity stats and reading-level interpretation. Use ?text=Your+text+here. Built for AI agents auditing content clarity and grade-level fit.

Compute the 4-byte function/error selector and full keccak topic from a solidity signature, e.g. transfer(address,uint256). For decoding tx input prefixes and matching event topics. function selector, 4byte, method id, event topic, keccak signature

Contagion Market — an agent-callable contagion market service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.05 USD per call.

Risk Contextual — an agent-callable risk contextual service, payable over x402 (USDC on Base). Provided via Apify.

Convert AUD to JPY at live rate. Pass ?amount=100 for value in Japanese Yen. 澳元兑换日元换算。豪ドルを円に換算。Convertir dólar australiano a yen. 호주 달러를 엔로 환전. aud to jpy convert.

Convert EUR to GBP at live rate. Pass ?amount=100 for value in British Pound. 欧元兑换英镑换算。ユーロをポンドに換算。Convertir euro a libra. 유로를 파운드로 환전. eur to gbp convert.

Convert GBP to JPY at live rate. Pass ?amount=100 for value in Japanese Yen. 英镑兑换日元换算。ポンドを円に換算。Convertir libra a yen. 파운드를 엔로 환전. gbp to jpy convert.

Convert LINK to USD at live price. Pass ?amount=1 for value in US Dollar. Chainlink兑换美元换算。チェーンリンクを米ドルに換算。Convertir Chainlink a dólar. 체인링크를 달러로 환전. link to usd, Chainlink convert.

Convert PEPE to USD at live price. Pass ?amount=1 for value in US Dollar. 佩佩币兑换美元换算。ペペを米ドルに換算。Convertir Pepe a dólar. 페페를 달러로 환전. pepe to usd, Pepe convert.

Convert SGD to USD at live rate. Pass ?amount=100 for value in US Dollar. 新加坡元兑换美元换算。シンガポールドルを米ドルに換算。Convertir dólar de Singapur a dólar. 싱가포르 달러를 달러로 환전. sgd to usd convert.

Convert TRX to USD at live price. Pass ?amount=1 for value in US Dollar. 波场兑换美元换算。トロンを米ドルに換算。Convertir TRON a dólar. 트론를 달러로 환전. trx to usd, TRON convert.

Convert UNI to USD at live price. Pass ?amount=1 for value in US Dollar. Uniswap兑换美元换算。ユニスワップを米ドルに換算。Convertir Uniswap a dólar. 유니스왑를 달러로 환전. uni to usd, Uniswap convert.

Convert USD to HKD at live rate. Pass ?amount=100 for value in Hong Kong Dollar. 美元兑换港币换算。米ドルを香港ドルに換算。Convertir dólar a dólar de Hong Kong. 달러를 홍콩 달러로 환전. usd to hkd convert.

Convert USD to KRW at live rate. Pass ?amount=100 for value in Korean Won. 美元兑换韩元换算。米ドルをウォンに換算。Convertir dólar a won. 달러를 원로 환전. usd to krw convert.

Council Tax — an agent-callable council tax service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.001 USD per call.

Create video using Sora 2 AI model

Create video using xAI Imagine model ($0.01/second)

UK street-level crime statistics by postcode (Police UK).

Cron List — an agent-callable cron list service, payable over x402 (USDC on Base). Provided via gateway.spraay.app. Priced around 0.002 USD per call.

Cross-exchange perpetual funding-rate spread for a symbol across OKX, Bybit and Binance. Returns each venue funding rate, annualized, the cheapest and most expensive venue, the spread and a cash-and-carry funding arbitrage hint. Live aggregated derivatives data for funding arb and perp venue selection. funding rate arbitrage, perp funding, cross exchange spread, basis trade

Crypto Balances — an agent-callable crypto balances service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.00144 USD per call.

Crypto Btc Tx — an agent-callable crypto btc tx service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.00144 USD per call.

Crypto Defi Yields — an agent-callable crypto defi yields service, payable over x402 (USDC on Base). Provided via 2s.io. Priced around 0.00144 USD per call.

Crypto ETF Sentinel — Crypto ETF AUM leaderboard: top-N US spot crypto ETF issuers ranked by assets under management (or another XBRL TIER1 concept). See the largest Bitcoin, Ethereum and other crypto ETFs by fund size, from daily-updated XBRL facts.

Crypto ETF Sentinel — Approval-pattern signal (1-99) per under-review US spot crypto ETF issuer: how closely a filing pattern resembles historically approved vs withdrawn ETFs. A heuristic benchmark, not a probability or prediction — see limitations.

Crypto News — an agent-callable crypto news service, payable over x402 (USDC on Base). Provided via x402-test.genesisblock.ai.

Import media into the project from a public https URL — the server fetches and mirrors the bytes (SSRF-filtered), then processes it (transcode + transcribe). Async: returns a media id that flips to ready when the mirror and processing finish; poll GET /media/:id or use a media.completed webhook.