the402 x402 endpoint directory

Use when a Brazilian postal code needs to become a real address — filling a form, validating a delivery, completing a

Voice-agent reply turn — low-latency chat after WebSocket ASR flux and smart-turn detection. POST messages[]; synthesi

Aggregated crypto news with sentiment: deduplicated headlines from many major crypto outlets (CoinDesk, Cointelegraph,

Returns network-wide totals: total x402 events, service count, and a UA classification breakdown (agent vs browser vs

Spot prices for up to 25 crypto assets in one call — USD, EUR, or GBP — from Coinbase with Kraken and CoinGecko fallba

Current Base gas price

Get media posts from an X community.

Attested work record for mixed human/robot/agent crews: seal who (or what) did which action, the outcome, and any devi

Returns the official band and threshold ladder for a river gauge.

Returns batched crypto price, market cap, and volume data.

Who owns whom, from the official GLEIF LEI graph (CC0 licensed, covers 2.5M+ legal entities worldwide). Query: ?lei=54

Returns weather forecast and air quality.

Add-on, precipitation for one location: daily rainfall plus 30-day accumulated wet-dry drought context from ERA5. Desc

Returns US AQI category and PM2.5 reading for a location.

Returns seasonal percentile and historical placement for a river point.

Add-on, statistical strata: share of the last 5 years spent in each official band for this day-of-year, the percentile

Add-on, calibrated units: normalized_index and pct_to_action so readings compare across stations. When the line has no

One id in, its official lifecycle state out - no need to know which line tracks it first. Covers 19 lifecycle lines (s

Search current Japanese (JP) National Diet members by name (kanji, kana, or romaji), party, or constituency. Returns m

Extract every hyperlink on a web page as structured JSON: resolved absolute URL, anchor text, internal-vs-external cla

Convert raw HTML you already have into clean markdown. Send JSON {"html": "..."} and get back markdown with scripts, s

Get structured metadata for any public web page in one call: title, meta description, canonical URL, Open Graph and Tw

Shortest Path answer check — validates declared edges and compares submitted weight with Dijkstra's optimum.

Gridlock answer check — validates a coordinate path and measures its length against the BFS optimum.

Chess Daily answer check — legally validates a complete UCI principal line against the pinned daily puzzle.

Fundamentals of a Japanese listed company from its latest annual securities report (yukashoken hokokusho) filed with E

Get real-time cryptocurrency price data for any token

Returns Bitcoin node uptime in seconds.

Returns the list of banned Bitcoin RPC commands.

Search Brazil's tax reform annexes by product or service description and get every entry that grants a reduced or zero

Convert a web page (by URL) or raw HTML into clean, readable Markdown plus structured metadata (title, description, Op

Find near-duplicate images. Computes perceptual hash distance between two image URLs to detect crops, resizes, re-comp

Verify that an image matches a reference image. Compares a candidate image URL against a trusted reference and returns

Compare two product photos for visual similarity. Returns a similarity score between two image URLs. Use when an agent

Check if two images are duplicates or near-duplicates. Compares two image URLs with perceptual hashing and returns a d

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.