Screen an EVM wallet address by exact match against the digital currency address identifiers on the official US Treasury OFAC SDN List (validated snapshot, refreshed hourly). Returns a signed listed / not_listed result with the SDN entry, dataset provenance and limits. SDN only, not EU/UN/UK lists; a non-match is not legal clearance. For payment screening before sending funds.

Orderbook walls for any Hyperliquid perp: the largest resting orders on each side of the book, with USD size and distance from mid. Use when you need to answer: Where are the big resting orders?

Top gainers and losers over 24h across every Hyperliquid perp above a liquidity floor, each with its funding rate attached. Use when you need to answer: What moved most in the last 24 hours? The "what moved" screener.

Cost-optimised endpoint selection: name a capability (web search, token safety, enrichment) and get the x402 endpoints that provide it ranked cheapest-first in USDC per call, with adoption stats. Refreshed daily from the Bazaar discovery index. The corpus is the most-used slice of the Bazaar, so read `price_floor_complete` and `corpus.cutoff` for whether the price floor you get is the Bazaar's or only ours — both are free on the catalog listing.

Orderbook imbalance for any Hyperliquid perp: resting bid and ask liquidity in USD within ±N bps of mid, the ratio between the two sides, and a skew read. Use when you need to answer: Which side of the book holds more resting liquidity?

Read-only access to Akash Network mainnet, the decentralised compute marketplace: the CometBFT RPC (as JSON-RPC or GET routes such as /status and /block) and the Cosmos SDK LCD (GET /cosmos/... and the chain's own modules). Served by the Pocket Network decentralised supplier set. Pay per request in USDC; no account, no API key.

ShieldAPI - x402 security preflight before agents accept or store credential material

Crypto market snapshot in one call: SOL and BTC spot prices read on-chain from DEX pools, both Hyperliquid perp funding rates with mark price and open interest, and the Fear & Greed index with its classification. Use when you need to answer: What is the market doing, in one call? Five reads, one payment.

BTC Volatility Risk Premium — DVOL minus Parkinson realized vol (72h). Positive = sell-vol opportunity, negative = buy-vol. Response includes regime classification (LOW/MID/HIGH), raw inputs for audit (DVOL, RV_72h, RV_6h, spot), timestamp, and open methodology URL.

Network Value to Transactions Ratio (NVT) — Network Value to Transactions Ratio (NVT) is market cap divided by the transferred on-chain volume measured in USD. Data by Glassnode.

Explains an EVM transaction in plain language: decoded intent, asset movements, approvals, and risk flags. POST /v1/tool with {tx_hash, chain_id}, or GET /v1/explain with query params, and get one JSON object with a summary, moved assets, gas, parties, and risk flags. Deterministic for identical input. Pay per request in USDC; no account, no API key.

Resolve an ENS name to its current Ethereum address or perform a reverse address lookup with forward-confirmation against the live ENS registry.

Jito tips sampled on-chain: p25 to p99 in SOL of the newest transfers into Jito's tip accounts, what landed bundles actually paid, refreshed every 5 minutes, with a landing recommendation. Use when you need to answer: What tip will land my Jito bundle?

AI image generation and editing via fal.ai, including memes. model: gpt-image-2 (default) | nano-banana-pro; anything else -> 400. Flat $0.15 per image. Supports image editing via public image URL.

Verified EVM contract source and ABI across 6 chains, with EIP-1967 proxy detection. POST /v1/evm with a contract {address, chain_id} and get its verified source, ABI, and proxy resolution as one JSON object. Deterministic per upstream verification state. Pay per request in USDC; no account, no API key.

Status for one US airport by IATA code: any active FAA closure, ground stop, ground delay, or arrival/departure delay, or a clean 'normal' result when there's nothing active. Live from the FAA's official NAS status feed. $0.01/call. Query: ?airport=JFK

Business Frameworks · business-frameworks/value/why@1.2 — why value is the objective a business is run against, and what moves it. Call before using the value scale bands or the two value decisions (reinvest-or-distribute, build-or-run-for-cash); returns 290 tokens of original synthesis citing two published works, with child handles — free layer at /catalogue.

Text-to-speech synthesis in 1 of 10 standard voices (5 male M1-M5, 5 female F1-F5) across 31 languages, up to 500 characters, returned as inline WAV audio. Use it to: give an agent a spoken reply, read an alert aloud, narrate a short UI prompt, add voice to a chatbot response, speak a confirmation message. Cheapest tier. USDC on Base via x402, no API key, no signup.

Resolve a location or address query to current place candidates and coordinates through Open-Meteo.

FullEnrich Company Search — filter by domain, name, LinkedIn URL/ID, industry, type, HQ, headcount, founding year, keywords, specialties, and company IDs. Requires at least one filter; offset alone → 400. Paginate via search_after. Returns up to 10 results. $0.15 if results; free if empty. Legal names not brands (Anysphere≠Cursor).