the402 x402 endpoint directory

Quality score for any x402 service, earned by real paid probes with on-chain receipts: composite 0-100, component brea

Momentum radar for the x402 seller ecosystem - which sellers are heating up, graded for wash-trade resistance. Reads t

One post-quantum-signed AI decision attestation, anchored to Hedera mainnet HCS.

Significant earthquakes — search USGS seismic events above an explicit significance-score threshold, with magnitude an

Recent earthquakes — search newest-first USGS seismic events by rolling time window and minimum magnitude, with revisi

Get a paginated timeline of replies from an X user.

Current protocol TVL by DefiLlama — the single latest total-value-locked number for one protocol by slug.

Stablecoins by DefiLlama — all tracked stablecoins with circulating supply (optionally current peg prices).

Historical stablecoin market cap on one chain from DefiLlama — circulating-supply time series for a single chain.

Historical stablecoin market cap from DefiLlama — aggregate circulating-supply time series across all chains.

Stablecoin market cap by chain from DefiLlama — current total stablecoin circulating supply per chain.

Stablecoin detail by DefiLlama — circulating-supply history and per-chain distribution for one stablecoin by id.

DeFi protocols with TVL by DefiLlama — the full list of tracked protocols with current total-value-locked, chain and c

DeFi protocol detail by DefiLlama — full historical TVL plus per-chain and per-token breakdowns for one protocol by sl

Historical token prices by DefiLlama — token price(s) at a given unix timestamp by chain:address or coingecko:id.

First recorded token price by DefiLlama — the earliest known price and timestamp for one or many coins.

Current token prices by DefiLlama — latest USD price, symbol and decimals for one or many coins by chain:address or co

Token price chart by DefiLlama — an evenly-spaced historical price series for one or many coins over a time window.

Options volumes for one chain by DefiLlama — options-protocol volume on a single chain.

Options volumes by DefiLlama — all options protocols with premium/notional volume summaries.

Options summary by DefiLlama — volume and history for one options protocol by slug.

Fees & revenue for one chain by DefiLlama — protocol fees and revenue on a single chain.

Fees & revenue by DefiLlama — all protocols with daily fees and revenue summaries.

Fees & revenue summary by DefiLlama — fee and revenue history for one protocol by slug.

DEX volumes for one chain by DefiLlama — decentralized-exchange trading volume on a single chain.

DEX summary by DefiLlama — trading volume and history for one decentralized exchange by protocol slug.

Chains by TVL from DefiLlama — current total-value-locked for every tracked chain.

Historical DeFi TVL for one chain from DefiLlama — total-value-locked time series for a single chain.

Block by timestamp from DefiLlama — the closest block number to a unix timestamp on a given chain.

Batch historical token prices by DefiLlama — prices for many coins at many timestamps in one call (coins is a JSON map

Historical crypto price on a specific date — price, market cap and 24h volume snapshot for any coin by CoinGecko id, i

Crypto coin metadata and market data by CoinGecko id — name, symbol, market-cap rank, price, homepage and categories f

DNS TXT record lookup — a domain's TXT records as a clean JSON list: SPF, DKIM and DMARC policy strings plus site-veri

DNSSEC health check: reports whether a domain is DNSSEC-signed (DNSKEY), has a DS record at the parent, and whether th

Address intelligence on Base — EOA/contract/ERC-20 + nonce + ETH/USDC balance + keyless GoPlus security verdict (phish

X Tweet Lookup ($0.005/call): Fetch one X (Twitter) post by numeric id: full text, author, ISO timestamp, like/retweet

Generate cryptographic random bytes

Run a fast live probe for one x402 endpoint and summarize challenge/payment-flow readiness.

Convert kanji-mixed Japanese (JP) text to hiragana, katakana, or romaji (Hepburn/Nippon/Passport), with a per-token br

Current conditions plus hourly and daily forecasts for anywhere on Earth. Pass a major city name or lat/lon coordinate

Real-time earthquake feed. Recent seismic events from USGS with magnitude, location, depth, and tsunami flag, filterab

Compare edges. Two named assets (?a=ETH&b=BTC): the relative-strength / pairs-trade read- when one leg sits near the t

Compress text: strip filler, collapse JSON, densify prose. Cuts upstream LLM token spend ~40%.

Is the stock market open right now? Deterministic market-status and trading-hours for the major global exchanges — NYS

Deterministic synthetic social media feed generator for AI agent testing and development. Simulates KOL postings with

AI TL;DR of raw text passed in directly (not a URL): short, medium, or long. The text-in sibling of /v1/summarize.

Find labs, wearable integrations, and genetics providers across modalities and regions.

Decodes an EVM signature request like EIP-712 or Permit.

Agent wallet status and readiness checker. Input any wallet address to get USDC/ETH balances, transaction count, walle

One-call market snapshot: BTC/ETH/SOL spot + 24h change, crypto fear & greed index, and SPY/QQQ/DIA/IWM quotes. JSON.