Explore APIs

Current mid price for every Hyperliquid asset (perps + spot) in one call — a fast whole-venue price snapshot.

Use first to see which venues list a ticker and get the exact symbol before /quote, /funding or /gaps. Every stock perp and tokenized stock agents can trade: trade.xyz, Aster, Lighter and OKX perps plus xStocks and Ondo tokens (2,400+ markets), with venue, symbol or mint, underlying, type, live and tradable-now flags. Same data free at GET /catalog. Errors: 400 unknown venue, 402, 502. Data, not a

Verdix standard ($0.10): call before larger or repeated payments to an EVM address on Base, when an address-age read is not enough. Sanctions, scam/phishing lists, address poisoning and contract/deployer signals, plus on-chain behaviour analysis. Returns safe/caution/danger with reasons.

Seller wash risk and wallet reputation for a Solana x402 merchant: wash label, fleet %, payer count, plus tier + score. 0.001 USDC. No signed V7 receipt (use GET /v1/intel/trust for the portable proof). Free preflight is allow|warn|block only. Sponsored Solana accepts require a payment client that honors accepts[].extra.feePayer (for example @x402/svm ExactSvmScheme); AgentCash cannot settle that

Block header lookup: number, hash, timestamp, miner, tx count, gas used/limit and base fee. Latest by default, or any block number, safe or finalized.

Verify that an agent wallet can complete an x402 v2 payment using USDC on Base mainnet before purchasing production art data.

Semantic content moderation, not a word list: profanity (even disguised, any language), harassment, hate, sexual content, threats, self-harm, scams. Per-category scores, allow/review/block, configurable ignore list.

Pay $0.01 for an instant verifiable random number backed by a Wesolowski VDF chain with on-chain Merkle anchor. For the free commit-reveal protocol: POST /v1/rng/commit (free), then GET the reveal_url returned — reveal is always free. Bias-resistant; do not construct reveal paths yourself.

Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, Polygon, Arbitrum and XDC; the challenge lists currently available networks for each transport. The receipt identifies the paid network and transaction. Business/professional use only. Terms: https://402rates.com/data-terms/

Polymarket prediction market odds — live prices for any market by free-text search or slug: outcomes, prices, spread, 24h volume, liquidity, resolution date.

Notarize AI output: a signed Ed25519 attestation of the model response plus sha256 content hash, receipt token, and Merkle anchor status for one AI inference — a cryptographic receipt for inference that lets you prove an AI said X and verify model output authenticity, checkable free by anyone, anytime.

Payment flow verification for agents integrating x402: confirms your wallet and payment channel work before you spend on a real endpoint. Category: infra.

Return an advisory ALLOW, DENY, or ESCALATE decision by comparing a bounded action request with authority, constraints, and evidence supplied by the caller. The service does not execute or legally authorize the action, access a wallet, validate identity, or independently observe facts.

Look up the latest Base mainnet block returned by the upstream RPC, including its number, timestamp (Unix and ISO) and gas used. No parameters. An upstream block response does not independently establish chain liveness or data freshness.

Is a Base address a smart contract or an EOA? Returns is_contract and bytecode size. Use when an agent must decide whether a recipient is a contract before sending funds or approving it.

Live prices with 5-minute, 1-hour, 4-hour and 24-hour change and 24-hour volume for the top 50 crypto coins, refreshed every minute.

Live reliability feed of x402 endpoints on Base: which services are up, return a valid 402 envelope, and how fast — free-probed across the CDP Bazaar catalog. A real share of listed endpoints are broken/misconfigured; poll ?since=<unix> (or ?health=healthy) to route your agent to endpoints that actually work. Objective measurement, no accusation, machine-readable.

Official $0.01 proof-of-life resource for SpendTheBits x402: returns a JSON heartbeat. Pay it to verify your agent's x402 client end to end.

Gas price: live gas fees for Ethereum, Base, Arbitrum, Polygon and Solana in one call. Use before sending a transaction to pick a fee or the cheapest chain. Returns base fee, slow/standard/fast priority fees, max fee, congestion, and the USD cost of a transfer, an ERC-20 transfer and a swap per chain, plus Solana priority fees. Optional chain. 0.001 USDC/call; failed calls are free.

Open Commerce Pathways session: a budget from 0.50 to 35 USDC, a flat 0.01 USDC service fee, delegated planning and one report within 1 hour. Returns a session token. Your wallet pays every seller directly. Unused sessions expire; no refunds.

List the projects of the paying wallet's account. Returns {items: [{id, name, slug, created_at}]}. Call this first: uploads, listings and search need a project_id. Costs $0.005 in USDC. No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files.

Statement history: The agent's last 24 three-hour statements (outflow split into spend and routing hops, what left its control, income, open flags), each with its keccak-256 hash, the prevHash link that chains them, and a Merkle proof against the signed root of its window. About one ERC-8004 agent on Base, by Agentic Finance Graph. id = token id, slug or bound wallet; an agent never seen paying is

[Payment rails: fee + speed comparison] Cheapest and fastest payment rail right now for a USD amount (?amount=100): Base USDC (live gas x ETH/USD, ~2s), XRPL RLUSD/XRP (live fee x XRP/USD, ~3-5s), Tempo and Circle Arc (live gas, USD fees, ~1s), card (static 2.9% + $0.30, days). Fee USD/%, settlement time, sources, agent protocols per rail, recommended pick. Dead sources marked unavailable. 60s cac

New token scan with a safety verdict attached: today's new Base pools above your liquidity floor, each already checked for honeypot, taxes and owner powers. One call instead of N+1

Live quotes for up to 8 symbols — stocks, ETFs, crypto pairs (BTC-USD), FX — price, session change and currency, in the paid response. $0.01 per call, no account.

Honeypot and rug pull check for a token: is it safe to buy? Checks a Solana or EVM token before you buy, hold or accept it (mint or freeze authority still active, LP not locked, buy/sell tax, low liquidity, brand-new token, concentrated holders) and answers green/orange/red with a grade (SAFE/CAUTION/RISKY/AVOID), the reasons, a one-line summary and market data. Bulk: 100 checks for $0.80 via /v1/

Datakoot Regulatory Intel: Get full detail on a single Federal Register document by its document number (e.g. $0.01 USDC per call, charged only on success.

Top crypto headlines with per-article source links and publish times — aggregated from Cointelegraph, Decrypt and NewsBTC RSS

Uses the geometric AWG definition, so results are exact for solid round conductors. Mass per metre and resistance follow from the material density and resistivity at 20 degrees Celsius; stranded conductors carry roughly two to five percent more mass and resistance per metre than the same nominal size and are not modelled separately. Supply either awg or cross_section_mm2, not both. Sizes 4/0 throu

News: recent headlines for one symbol from our own news pipeline, each with a tone score, plus the average tone. Empty results are reported as empty (never charged), not as neutral. Experimental. Not financial advice.