Web answer

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://agent402.tools

• POST/api/user-agent—No price listedHeuristic user-agent string parser: browser, version, OS, device class, and bot detection. Also on x402 Bazaar
• POST/api/skill/defi-dashboard—No price listedDeFi market overview: total TVL, ETH price, Base gas, and global crypto stats in one call. DeFi dashboard skill pack: one x402 payment runs 4 underlying tools (defi-tvl, crypto-price, gas-snapshot, crypto-global); partial-success per step. Also on x402 Bazaar
• POST/api/perp-orderbook—No price listedThe live level-2 order book for one perpetual: best bid and ask, mid, spread in basis points, up to 20 levels a side with cumulative depth and bid/ask imbalance. Use it when an agent is sizing an order, checking liquidity before a trade or measuring book pressure at a point in time. Also on x402 Bazaar
• POST/api/skill/loan-comparison—No price listedCompare two or more loan offers - different rates, terms, fees, prepayment structures - on the metrics that actually matter (monthly payment, total interest, year-1 equity build, NPV at your discount rate, effective rate). Apples-to-apples math without opening a spreadsheet. Loan comparison skill pack: one x402 payment runs 5 underlying tools (loan-payment, amortization, compound-interest, npv, irr); partial-success per step. Also on x402 Bazaar
• GET/api/block-info—No price listedHeader-level detail for one block on Ethereum, Base, Polygon, Arbitrum, or Optimism: hash, timestamp (unix + ISO), transaction count, gas used/limit, base fee. Pass a block number, 0x hex, or "latest". Keyless multi-endpoint failover. Also on x402 Bazaar
• POST/api/pbkdf2—No price listed
• POST/api/tx-simulate—No price listedDry-run a prospective smart-contract call or transaction without broadcasting it: executes eth_call and eth_estimateGas against the latest block over the same keyless multi-endpoint public RPC pool as /api/evm-rpc (ethereum, base, polygon, arbitrum, optimism). Returns the return data and a gas estimate on success, or {success:false} with the revert reason when the call would fail. Strictly read-only - nothing is signed or broadcast. Also on x402 Bazaar
• GET/api/stock-dividends—No price listed
• POST/v1/auto/responses—No price listedOpenAI Responses API over x402 - point the OpenAI SDK's responses.create() (or the OpenAI Agents SDK) at base_url https://agent402.tools/v1/auto and pay $0.01 per call in USDC, no API key, no signup. Same models, caps and price as this tier's /chat/completions route; any model here is served through the Responses wire. Also on x402 Bazaar
• GET/api/meta—No price listedFetch page metadata for a URL: title, description, OpenGraph, Twitter cards, canonical URL, favicon. Also on x402 Bazaar
• GET/api/erc721-owner—No price listedWho owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint failover. Also on x402 Bazaar
• GET/api/stablecoin-peg—No price listedLive $1-peg deviation for the top USD stablecoins (USDT, USDC, USDS, DAI, USDe, PYUSD, USDD, TUSD, FDUSD by default, or pass your own list): current price, deviation in basis points, 24h high/low, worst 24h deviation, market cap, and an on-peg / stressed / depegged status. Data provided by CoinGecko. Also on x402 Bazaar
• GET/api/screenshot—No price listedScreenshot any public URL in headless Chromium. Returns a PNG image. Use when you need VISUAL evidence (layout, charts, a rendered receipt); when you need the text, extract or render are cheaper and machine-readable. Also on x402 Bazaar
• POST/api/dex-pair—No price listedLook up the Uniswap V3 pool address for a token pair + fee tier on Ethereum, Base, Polygon, Arbitrum, or Optimism. Pass either order (tokenA/tokenB) - the factory sorts internally. Returns 0x0…0 if no pool has been deployed for that combination yet. Also on x402 Bazaar
• POST/api/skill/api-health—No price listedIs this API endpoint healthy? Liveness check, response headers, and TLS certificate status in one pass. API health check skill pack: one x402 payment runs 3 underlying tools (http-check, http-headers, tls-cert); partial-success per step. Also on x402 Bazaar
• POST/api/readability-score—No price listedCompute Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, and Automated Readability Index from text. Returns all 4 scores plus word, sentence, and syllable counts. Also on x402 Bazaar
• GET/api/search-suggest—No price listedSearch autocomplete: query suggestions for a partial input as a flat JSON array. Useful for query expansion, did-you-mean refinement, and topic exploration. Returns up to 20 suggestions. Also on x402 Bazaar
• POST/api/memory/cas—No price listedAtomically write (or release) a key only if its current value equals `expected` - the coordination primitive for distributed locks and optimistic concurrency across agents. Acquire a lock: expected=null + a value + ttlSeconds. Release it: expected=<your token> with no value (deletes on match). Update safely: expected=<old>, value=<new>. Returns whether it swapped and the current value. Also on x402 Bazaar
• POST/v1/ticker-pack—No price listed
• POST/api/action-gate—No price listedDeterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, URL/hostname validation, a bounded JSON-schema check on a payload, and a spend proposal against a spend mandate) and returns ALLOW, REVIEW, or BLOCK with stable reason codes plus a SHA-256 request/receipt hash pair. Also on x402 Bazaar
• POST/api/readability—No price listedFlesch Reading Ease score and Flesch–Kincaid grade level for English text, plus word/sentence/syllable counts. Also on x402 Bazaar
• GET/api/coin-price-by-contract—No price listedLive price, market cap, 24h volume and 24h change for ERC-20 / SPL / other chain tokens looked up by CONTRACT ADDRESS on a named platform (ethereum, base, polygon-pos, arbitrum-one, optimistic-ethereum, binance-smart-chain, solana, avalanche, ...). Up to 25 contracts per call, any vs currency (default usd). The address-first sibling of crypto-price: use it when an agent holds a token address from a wallet, a DEX pair or a contract scan and has no coin id. Also on x402 Bazaar
• GET/api/weather-daily—No price listed7-day daily weather forecast for any location: high/low temp, precipitation sum and probability, max wind, UV index, sunrise/sunset. No key, global. Also on x402 Bazaar
• POST/api/npv—No price listedCompute the net present value of a stream of cashflows at a given discount rate. Index 0 is treated as t=0 (today, not discounted); indices 1..n are discounted by (1+rate)^t. Matches Excel's NPV but with the conventional t=0 treatment most finance textbooks use (Excel itself starts discounting at t=1 - see notes). Use for capital-budgeting decisions: positive NPV = creates value at the discount rate; negative = destroys value. Also on x402 Bazaar
• POST/v1/token-risk/pro—No price listed

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 25 of 692 listed endpoints. Next endpoints First endpoints