the402 x402 endpoint directory

Ethereum Up or Down 5-Minute Probability estimates p_up and p_down for rapid near-close windows where the freshest sup

Bitcoin Up or Down 30-Minute Probability estimates p_up and p_down for half-hour windows using the widest caller-suppl

Bitcoin Up or Down 15-Minute Probability estimates p_up and p_down for quarter-hour windows using a broader caller-sup

Bitcoin Up or Down 5-Minute Probability estimates p_up and p_down for rapid near-close windows where the freshest supp

Decode a 3-char WMI via NHTSA vPIC for $0.003 USDC into manufacturer and vehicle type. Call when you need this bounded

Multilingual RAG reranking API for agents: rank 2-16 passages, tools, routes, search results, or support answers again

Stock market snapshot API. Get a live/latest US equity quote plus recent daily OHLCV price bars for a ticker symbol.

OpenAI-compatible text-to-speech endpoint (input, voice, response_format) for drop-in use with existing OpenAI TTS cli

Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, u

Text-to-speech synthesis in 1 of 10 standard voices (M1-M5 male, F1-F5 female) across 31 languages, for longer text fr

Kristo Intelligence - paid API data (/api/v1/signal)

Bulk domain name availability lookup via live WHOIS: check many domains across many TLDs in one call and get a per-dom

Deterministic ephemeris snapshot (one location/time). Free sample, no payment required: GET /play/sky

Live Base mainnet ETH and USDC balances for an address — treasury and agent wallet checks

Resolve A and AAAA records for a public hostname via DNS-over-HTTPS (60s cache)

Live IP geolocation: country, city, org, and ASN for fraud and routing agents

Web research API for AI agents — search the public web and safely extract source evidence in one $0.003 accepted-deliv

Legal entity identity via GLEIF: look up a company by LEI, search legal entities by name across jurisdictions, or vali

AI intent execution - natural language commands translated to API actions automatically

ERC-20 token balance for any wallet — USDC, USDT, DAI, or any token contract — via balanceOf eth_call, with decimals a

Wallet bundle: ETH balance + balance_usd + tx count + contract-code check (EIP-7702 delegated-EOA aware) for a Base ma

L2 order book for a Hyperliquid perp pair (POST variant)

Get real-time crypto token price with 24h change, market cap, and volume

AI API endpoint - pay per request with USDC on Base and Solana

Read one public URL and return clean bounded page content with a SHA-256 content hash.

Count words, characters, sentences, paragraphs, and reading time

International phone number validation and normalization (libphonenumber): validity, country, E.164, national/internati

Convert between fiat currencies and cryptocurrencies

ATR-based expected price range for the period: the 68% and 95% probability bands around current price. Use to set real

Bollinger-Band squeeze detector: is volatility compressing toward a likely expansion? Returns extreme/strong/moderate/

Aggregated market sentiment label (strong_bearish → strong_bullish) with a normalized score, computed from LLM-scored

Multi-timeframe RSI oversold check (1h/4h/1d, weighted) returning a boolean + the blended RSI. Use to confirm an overs

Is this drop a statistically significant dip or just noise? Compares the move against the asset's ATR and returns a ve

ADX-based chop-vs-trend detector for an asset/timeframe: is price trending or stuck in a range? Returns a boolean + ch

Top and bottom momentum coins ranked by return over the chosen period — a leaderboard of what's running and what's ble

Pearson correlation of a coin's returns vs BTC (-1 to +1) over the period. Use to judge diversification and whether an

Relative strength of a coin vs BTC over a period, returned as a category (very_strong → very_weak) plus a numeric scor

Alt-season detector: what % of the top-10 alts have outperformed BTC over the lookback window, with a 0-100 index and

Active-pump detector: is the asset currently pumping, and for how long vs the historical average pump length? Use to j

FOMO guard: how far has price already run from the recent swing low — in % and ATR multiples — versus the historical a

Counts consecutive green candles on the chosen interval and returns the historical outcome stats after streaks of that

Is price over-extended? Distance from MA20/MA50, Bollinger-band position and a z-score in one read. Use to avoid enter

Upcoming macro events (FOMC, CPI, NFP, etc.) with date, country and impact level, filterable to high-impact only. Use

Wallet bundle: ETH balance + balance_usd + tx count + contract-code check (EIP-7702 delegated-EOA aware) for a Base ma

Mid-tier OpenAI-compatible chat completion. Qwen3 235B (instruct/thinking/VL/next), DeepSeek V3.2, GLM 5.2, venice-unc

Records an agent decision (execute now, or wait) against a fresh forecast snapshot and returns a decision_id plus the

Audit a site's HTTP security headers before embedding, scraping, or trusting it. Returns an A+ to F grade and 0–100 sc

Verify whether a domain is legitimate and safe before transacting with it. Returns a 0–100 trust score and tier (TRUST

Validate an email address and check whether an email domain can receive mail. Verifies email syntax and performs a liv

Locus public pay-per-use API