the402 x402 endpoint directory

Transaction status on Base — success/failed, block, confirmations, gas, from/to. A pending/unknown tx returns 404 (not

ETH balance of any address on Base (wei + ETH). Pay-per-call via x402.

Base latest block number + timestamp — a chain-head freshness probe. Pay-per-call via x402.

Base gas price — current wei/gwei. Cheap read-only chain primitive. Pay-per-call via x402.

x402 Market Feed: ranked paid-resource demand signals from x402 discovery, including 30-day calls, unique payers, pric

Search official UK Companies House company data by name, number, SIC, geography, status, founder/team signal, or natur

Hyrule Cloud is pay-per-use infrastructure for AI agents on AS215932: IPv6-native compute, outbound requests over Dire

Test a regular expression against text and return every match with numbered and named capture groups. Deterministic.

Compare two text or HTML snapshots and return additions, removals, and similarity.

Repair malformed JSON and optionally validate it against JSON Schema.

Paid liveness probe for the MimirAPI counter. Returns pong, the SKU id, and a server timestamp. One tenth of a cent bu

ATMS x402 challenge — crawler / probe endpoint (always 402, no side effects)

Cryptographically-secure random integers in a chosen range (CSPRNG, rejection-sampled to avoid modulo bias) — real ent

Pick one or several options at random from a caller-supplied list (CSPRNG), optionally without replacement — a decisio

Liveness/latency pre-flight for a URL: is it up, HTTP status and class, response latency in ms, whether it redirects (

Permit2 + EIP-2612 Gas Sponsoring Demo — forces the gasless Permit2 path so a fresh wallet holding USDC but ZERO ETH c

Hyrule Cloud is pay-per-use infrastructure for AI agents on AS215932: IPv6-native compute, outbound requests over Dire

Live spot prices for cryptocurrencies with 24h change. Query by CoinGecko ids (comma-separated, e.g. bitcoin,ethereum)

Live spot prices for cryptocurrencies with 24h change. Query by CoinGecko ids (comma-separated, e.g. bitcoin,ethereum)

Fast link preview extractor — returns OpenGraph/Twitter Card metadata (title, description, image, favicon, site name,

Get a Firebase ID token for authenticating with the callable APIs

Search, filter, and sort prediction markets across exchanges.

Search x402 service registry — broad q search plus health, score, category, tag, and tags filters

x402 settlement test

Cheapest liveness ping: ONE request to any public URL — is anything answering, and how fast? Returns up/down, HTTP sta

Live crypto conversion at CoinGecko prices: any coin to any coin or fiat, and fiat to coin. ?amount=0.5&from=bitcoin&t

Exact date arithmetic — the calendar math LLMs guess at. ?from=&to= → days, business days, weeks, hours between; ?date

Agent Helpdesk LIVE CHAT — talk to the operator's assistant about this API. $0.001 per message buys an LLM reply that

Access to protected psf-bch-api resources (0.001 USDC)

Agent-SOFR — decentralized USD short-rate benchmark for AI agents. Weighted-median of 7 sources + variance + regime pr

Real-time trade stream with market summaries (2hr rolling window, $500+ trades)

Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon — base fee, priority fee tiers, and USD transfer cost, straigh

Compare current perpetual funding rates across Binance, Bybit, Hyperliquid, and, for single-symbol requests, OKX. Retu

Search UK companies by name via Companies House — returns matches with number, status, type, incorporation date, addre

Compute md5/sha1/sha256/sha512 (or HMAC with a key) of a string; hex + base64 output.

Modular arithmetic operations: mod (a mod m), modpow (a^b mod m via fast exponentiation), and modinverse (a^-1 mod m v

ECB FX reference rates for agents at $0.001 USDC. Call when you need daily EUR/USD/BRL (and other published pairs) wit

Internal-link analyzer for one page: internal vs external counts, nofollow/sponsored/ugc usage, empty and generic anch

Navigation extractor: pulls a site's *navigation* links (not every link) by scoring candidate regions — semantic <nav>

Post to the Agent Helpdesk (machine message board) — your two cents for other agents. We build tools agents need, on d

QR codes for agents at $0.001 USDC. Call when you need a PNG or SVG QR from text or a URL for tickets, onboarding link

x402 payment E2E test endpoint (echoes query). Factual data only; not investment advice.

Targeted node lookup by asset address or protocol/asset name — the sole discovery path

Live registry of tokenized US equities & ETFs on Robinhood Chain (chainId 4663): symbol, canonical token address, deci

Best-available stablecoin yield deposit options: the highest-APY lending venue per stablecoin (USDC / USDT / DAI …), r

Historical (closed) yield farming positions for a user across all protocols and chains, with realized yield and exit t

Active yield farming positions for a user across Aave V3 and Morpho on all supported chains, with live APY and accrued

Search supported ERC-20 tokens by symbol or address across 6 chains (Base, Ethereum, Arbitrum, Polygon, BSC, Avalanche

Bitcoin spot price in USD. Pay-per-call $0.001 USDC. AI agent BTC price feed.

Live Base wallet balance for AI agents. Returns native ETH and Circle USDC balances, atomic values, block height, cont