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

• GET/api/b20-verify—No price listedBoolean verdict with reasons: is this address a real factory-issued B20 on Base? Checks the 0xB200 address prefix, ERC-20 readability, and whether the B20 feature set is activated on the registry. On mppscan and x402 Bazaar
• POST/api/json-to-yaml—No price listedConvert JSON to YAML. On mppscan and x402 Bazaar
• POST/api/image-gen—No price listedGenerate an image from a text prompt using GPT Image 2 (low quality, 1024x1024). No API key needed; pay per call via x402. Returns base64 PNG. Prompt capped at 1000 chars. A render takes 10 to 30 s; use a client timeout of at least 60 s. On mppscan and x402 Bazaar
• GET/api/college-lookup—No price listedLook up US colleges by name via the Dept. of Education College Scorecard: state, out-of-state tuition, overall admission rate, and undergraduate size. Live gov data. On mppscan and x402 Bazaar
• POST/api/asset-transfers—No price listedToken and native transfer history for any EVM address across major chains: direction, counterparty, asset, exact decimal value, block and transaction hash, filterable by category and block range with a cursor for paging. Use it to reconstruct what an address actually did, rather than only what it holds now. On mppscan and x402 Bazaar
• POST/api/ens-bulk-resolve—No price listedReverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label transaction lists, wallet leaderboards, or NFT holder snapshots with human-readable names instead of 0xabc… stubs. On mppscan and x402 Bazaar
• POST/v1/grounded/chat/completions—No price listedOpenAI-compatible chat completions GROUNDED in a live web search on every call: the gateway runs a live web search (up to 5 results) for the prompt, hands the results to the model, and returns the answer with url_citation annotations - $0.03 per call in USDC, no API key, no signup. Model is chosen server-side like the auto tier (omit "model" or send "auto"; explicit ranked models accepted); the response adds agent402_router {category, quality, served}. On mppscan and x402 Bazaar
• GET/api/coin-market-chart-range—No price listedPrice, market cap and volume series for a coin over an ARBITRARY time window: `from`/`to` as unix seconds or ISO dates, or `lookback` ("6h", "3d", "2w") ending now. Granularity is automatic upstream: 5-minute points for a window of 1 day or less, hourly up to 90 days, daily beyond. The windowed sibling of crypto-history (which counts days back from now): use it to align with a specific event, a filing date or another series. On mppscan and x402 Bazaar
• POST/api/transfer-authorization—No price listedBuild the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to authorize an x402 payment. We construct it; we never sign or send. Non-custodial. On mppscan and x402 Bazaar
• POST/api/fc-cast—No price listedFetch one Farcaster cast by hash or warpcast.com / farcaster.xyz URL. Returns the compact cast: author (fid, username, follower count), text, timestamp, channel, parent hash, likes, recasts, reply count, embed URLs. Use to resolve a shared link, verify a quote, or enrich a cast hash from another tool. On mppscan and x402 Bazaar
• GET/api/usdc-balance—No price listedRead the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, or Sei. Read-only on-chain call. The minimal single-token read for payment flows - for EVERY token a wallet holds in one call use wallet-balance. On mppscan and x402 Bazaar
• POST/api/barcode-decode—No price listedDecode a barcode or QR code from an image. Send a base64 PNG or JPEG (or a data: URL); returns the decoded text and the symbology. Reads QR, DataMatrix, and 1D barcodes (EAN/UPC/Code39/Code128/ITF/Codabar). Deterministic, no network, no model. On mppscan and x402 Bazaar
• POST/api/truncate—No price listedTruncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries. On mppscan and x402 Bazaar
• POST/api/forecast-holt-winters—No price listedHolt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amplitude) or multiplicative (amplitude grows with level). `period` is optional - if omitted, the kit auto-detects via autocorrelation on first differences and surfaces what it picked (with the ACF strength) so you can audit. Needs at least two full seasonal cycles to fit reliably. On mppscan and x402 Bazaar
• POST/api/options-volume—No price listedOnchain options protocols ranked by 24h notional volume with 7d and 30d volume, 1d and 7d change and the chains each runs on, plus sector totals. Use it when an agent is comparing decentralized options venues or tracking whether onchain options activity is growing. On mppscan and x402 Bazaar
• GET/api/drug-label—No price listedFDA drug labeling (openFDA SPL) by brand or generic name, or by NDC: boxed warning, indications and usage, dosage and administration, contraindications, and warnings and precautions, with manufacturer, routes, application number, NDCs and the label's effective date. Each section reports its full length and whether it was cut. Newest label first; the answer says how many labels matched. Live FDA data, no key. On x402 Bazaar
• POST/api/skill/link-preview—No price listedThe 'turn a URL into a card-shaped preview' workflow. Pull OpenGraph/Twitter card metadata, fetch the article body as a description fallback, normalize the og:image into a standard 1200×630 social card variant and a 400×400 square thumbnail, and extract URL/mention entities from the body for related-link surfacing. Five tools, one structured card payload ready for chat embeds, social shares, or RSS-to-card pipelines. On mppscan and x402 Bazaar
• POST/api/skill/fraud-signals—No price listedIs this domain trustworthy, or is it a phishing site / typosquat / scam? Pull the reputation signals an analyst checks before clicking anything: domain age, cert issuance history, hosting reputation, DNS topology, tech-stack fingerprint, and page-content red flags. Different from a security audit - this is about whether the domain is what it claims to be. On mppscan and x402 Bazaar
• POST/v1/nano/messages—No price listedAnthropic Messages API over x402 - point the Anthropic SDK (or Claude Code / the Agent SDK) at base_url https://agent402.tools/v1/nano and pay $0.003 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 Messages wire (Claude natively, others translated). Depth: `effort` (low..max) on Claude 4.7+ and Haiku 5.5, thinking.budget_tokens on older Claude. On mppscan and x402 Bazaar
• POST/api/html-links—No price listedEnumerate every <a href> in an HTML string with its anchor text and rel attribute. Optionally resolves relative hrefs against a base URL and filters by a regex on the href. The deterministic way to crawl a page's outlinks without writing a regex. On mppscan and x402 Bazaar
• POST/api/code-run-pro—No price listedExecute Python or JavaScript code in a secure, isolated cloud sandbox (Pro tier). Same as /api/code-run but with 60s timeout and 50k char code limit for longer computations. Returns stdout, stderr, and the expression result. A run that hits the time limit is returned with timedOut: true and the output it printed, and is charged. On mppscan and x402 Bazaar
• POST/api/l2-gas-comparison—No price listedCurrent gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a transaction to the cheapest viable L2 or to track L1→L2 gas spread. On mppscan and x402 Bazaar
• POST/api/site-crawl—No price listedCrawl a website from a starting URL and return each page as clean markdown: breadth-first over internal links, bounded by page count and depth, honouring robots.txt, with per-page title, status, depth and outbound links. Use it when an agent needs a whole section of a site rather than one known page. On mppscan and x402 Bazaar
• POST/api/wallet-transactions—No price listedReturn the most recent asset transfers (incoming + outgoing) for a wallet address - native coin, ERC-20, ERC-721, ERC-1155 - already merged and sorted newest first. Each row carries the block, tx hash, counterparty, asset, and decimal value. Cap is 100 per direction; widen the window via `fromBlock` if you need deeper history. On mppscan and x402 Bazaar
• POST/api/skill/content-clean—No price listed On mppscan

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