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Marketing copy quality gate and pre-publish copy review for autonomous agents about to publish or send ad, landing-page, email, CTA, campaign or GTM copy. Returns a fast PASS/WARN/BLOCK verdict, claim-risk flags and prioritized fixes before release. Standard machine terms: https://nexuseval.vercel.app/terms.json 2026-08-29-v2.

Render a web page and return its content as markdown

Current normalized overall status, fault-first components, active incident (or closedIncidentSummary if stale), and poll clocks. overallStatus and hasActiveIncident are in the 402 JSON body so you can decide whether to pay. $0.01 per call in USDC on Base or Solana, verified and settled by the PayAI facilitator - no API key, no signup.

DEX pair flow for one symbol: accumulation vs distribution ($0.05). No whale, company, or ETF name unless a public label exists. Not a trade order. NFA.

Read-only native Circle USDC transfers across six EVM chains and Solana.

Verify a Base (mainnet, default) or Base Sepolia transaction is a successful, confirmed transfer of native Circle USDC (not a look-alike token) to an expected recipient for an exact or minimum amount. Checks receipt status, canonical block, confirmations, optional payer, notBefore/maxAge windows; returns verdict valid|invalid|pending|not_found with machine-readable reasons and the matched Transfer

Current gas price on Base from public RPC (wei + gwei). Optional query network=base for schema probes. e.g. GET /v1/gas/base

Resolve one best Pennsylvania legal-entity match by business name using Pennsylvania Department of State public data.

TRON energy cost for a given workload: ?energy=65000&rent_sun=22&monthly_usd=100. Returns the governance burn price, the market rent price, the staking weight read from the chain, the capital a supplier needs, their APR, and the capital required for a target monthly USD income. Computed at request time from TRON chain parameters.

Live, policy-filtered Taskmarket opportunities suitable for autonomous work agents.

Count business days between two ISO dates, excluding weekends and public holidays.

Return a USD spot-price consensus for BTC, ETH, SOL, or USDC using fixed public CoinGecko, Coinbase, and Kraken routes.

Decision-ready GPU rental cost report for 24-720 GPU-hours. Avoid paying $30 more for a 24h H100 rental. Compare spreads, uptime, and get a rent/hold decision. Returns cheapest and recommended A100/H100/RTX offers, price spread, estimated cost at your hours, 7-day history and a rent/don't-rent call - not just a price list. GET ?model=A100&hours=24, optional compare=H100 and format=markdown; $0.10

Stop opening five explorers to price one transaction: one GET returns what each chain is charging for gas right now — for base, eth, arbitrum, optimism and polygon: the current gas price in gwei (with the raw wei the RPC returned), the latest block's base fee, the priority fee a 50th-percentile transaction actually paid across the last five blocks, the next block's base fee under the EIP-1559 form

Crypto Fear and Greed index - is the crowd greedy or fearful right now, and what is the 30-day trend. ALIAS PATH of /api/crypto-fear-greed, published with the EXACT slug the router's winning row publishes (fear_greed_index, with the underscore). MEASURED DEMAND: this slug scores 30 slug points and takes the top visible slot on the buyer's 'fear greed index' query. via x402

Safely follow bounded public HTTP redirects and compare the final URL with the expected target; return a deterministic verdict and reason code.

Your rank and percentile by settled calls across the ranked market, plus your per-buyer economics against the market medians.

Retrieves a previously stored object by its key (?key=...) and streams it back with its original Content-Type. Flat $0.01 per call, regardless of size.

Monexus Terminal API — Model-card watch: launches, silent downgrades, safeguards, policy events by lab. Params: limit (<=50).

Quorum-verified Base USDC receipt across two of three public RPC sources: transaction status, recipient, amount and confirmations

Search the TrustLink verified XRPL link registry (up to 10 ranked matches with verification receipts).

Check if a version is still supported (is python 3.12 still supported?): one release cycle, its EOL (end-of-life) date, support status, LTS, latest patch.

Transcribe speech in an audio file to text with timestamps (Whisper, many languages); up to 5 minutes, 25 MB