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

Base URLhttps://agent402.tools/api

• POST/totp—No price listedCompute the current TOTP code (RFC 6238, 30s period, SHA-1, 6 digits) from a base32 secret. Useful for agents that must complete 2FA flows they are authorized for. Also on x402 Bazaar
• POST/image-gen-hd—No price listedGenerate a higher-quality image from a text prompt using GPT Image 2 (medium quality, 1024x1024). No API key needed; pay per call via x402. Returns base64 PNG. Prompt capped at 2000 chars. A render takes 20 to 45 s; use a client timeout of at least 60 s. Also on x402 Bazaar
• POST/xml-to-json—No price listedParse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays). Also on x402 Bazaar
• POST/llm-premium—No price listedLLM inference proxy (Premium tier) - o3 or o3-mini reasoning models. Supports vision (up to 2 image URLs) and structured output (response_format: json_object or json_schema). No API key needed; pay per call via x402. Input capped at 32k chars, output at 2048 tokens. Also on x402 Bazaar
• POST/semver—No price listedParse a semantic version, or compare two (a vs b → -1/0/1, with greater/lesser flags). Also on x402 Bazaar
• POST/moving-average—No price listedCompute simple (SMA) and exponential (EMA) moving averages over a numeric series. Returns one value per input position - the first (window-1) SMA values are null since there isn't enough history. EMA uses the standard alpha = 2/(window+1) smoothing factor used in technical analysis. Also on x402 Bazaar
• POST/token-safety—No price listedIs this EVM token safe to trade? One deterministic call returns a verdict (ok, caution, unsafe) with the named facts behind it: honeypot, can-sell, buy and sell tax, mintable supply, hidden or reclaimable ownership, pausable transfers, blacklist, modifiable slippage, upgradeable proxy, verified source, LP lock share and holder counts. Covers Base, Ethereum, Polygon, Arbitrum, Optimism, BSC, Gnosis and Celo. Also on x402 Bazaar
• POST/xml-validate—No price listed
• POST/crc32—No price listedCRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip. Also on x402 Bazaar
• POST/skill/earnings-deep-dive—No price listedEverything you need before a company reports: the latest financials, recent SEC filings, the latest close, and fresh analyst news - in one pass. Earnings deep-dive skill pack: one x402 payment runs 4 underlying tools (company-financials, edgar-filings, stock-quote, search); partial-success per step. Also on x402 Bazaar
• POST/skill/markdown-convert—No price listedMarkdown to HTML and back - a round-trip conversion that proves fidelity and gives you both formats from one input. Markdown to HTML round-trip skill pack: one x402 payment runs 3 underlying tools (markdown-to-html, html-to-markdown, text-diff); partial-success per step. Also on x402 Bazaar
• POST/text-similarity—No price listed
• POST/calldata-decode—No price listedDecode EVM smart-contract transaction calldata into the function name and typed parameters. Supply an ABI (from /api/contract-abi) or a signature like transfer(address,uint256) for a fully offline decode; with neither, the 4-byte selector is resolved via the openchain.xyz signature database (4byte.directory fallback) and each candidate signature is tried. Unknown selectors return a documented partial decode (selector + raw 32-byte words) instead of an error. Also on x402 Bazaar
• POST/l2-tvl—No price listedTop L2s by Total Value Locked (TVL) from an open DeFi analytics API. Returns each L2 with TVL in USD, native token symbol, and market-data coin ids. Classification combines the source's parent-chain hint with a curated list of well-known L2s (Arbitrum, Optimism, Base, zkSync Era, Linea, Scroll, Mantle, Polygon zkEVM, Starknet, Blast, Mode, Manta, Metis, Polygon, Taiko, Immutable zkEVM, World Chain). Also on x402 Bazaar
• GET/fred-release-observations—No price listedBulk-fetch observations for every series in a FRED release in one call. Use it to grab an entire economic report (jobs report, CPI report, GDP release) without enumerating constituent series IDs first. Returns paginated; pass lastSeriesId + lastObservationDate back to fetch the next page. Also on x402 Bazaar
• POST/skill/trend-analysis—No price listedTake any numeric time series - a stock's daily close, a FRED macro indicator, a treasury yield history - and run it through the full quantitative workup: descriptives, moving averages, trend line, outliers, optional correlation against a benchmark, and a deterministic forecast forward with a 95% prediction interval. Everything an analyst writes a notebook for, in one chain of cheap calls. Also on x402 Bazaar
• POST/skill/onchain-analyst—No price listedAsk Base anything in one paid call: your SQL runs against indexed, DECODED chain data (events with parsed parameters, transactions, blocks, user-ops) with the live schema alongside - no indexer, no RPC archaeology. Onchain analyst (SQL over Base) skill pack: one x402 payment runs 3 underlying tools (onchain-sql-schema, onchain-sql, stats-summary); partial-success per step. Also on x402 Bazaar
• POST/jsonl—No price listedConvert between a JSON array and JSONL/NDJSON (one JSON object per line). mode: to-jsonl (array → lines) or from-jsonl (lines → array). For streaming records to and from agents and datasets. Also on x402 Bazaar
• POST/sharpe-ratio—No price listedRisk-adjusted return: (mean return - risk-free rate) / sample standard deviation of returns (n-1). Pass periodsPerYear to also get the annualized ratio (× sqrt(periodsPerYear)). Also on x402 Bazaar
• POST/json-merge—No price listedDeep-merge two JSON objects (b wins on conflicts; arrays are concatenated). Also on x402 Bazaar
• POST/contract-abi—No price listedFetch the verified ABI for a contract address from an open verified-contract repository, plus a ready-to-use list of human-readable function signatures with their 4-byte selectors. Covers 8 EVM mainnets. Unverified contracts return a structured {verified:false} miss. Pair with /api/calldata-decode to decode transactions against this ABI. Also on x402 Bazaar
• GET/mime—No price listedLook up a MIME type by file extension. Also on x402 Bazaar
• POST/compound-interest—No price listedCompute future value of a principal under compound interest. Returns future value, total interest earned, and the effective annual rate (APY) given the compounding frequency. Matches Excel's FV(rate, nper, 0, -principal) and the classic (1+r/n)^(nt) textbook formula. Also on x402 Bazaar
• POST/calc—No price listedSafely evaluate an arithmetic expression (+ - * / % ^ and parentheses). No code execution - a real parser, not eval. Also on x402 Bazaar
• GET/crypto-market—No price listedTop N coins by market capitalization with full market snapshot per coin: rank, price, 24h change, 7d change, 24h volume, market cap, circulating supply, and all-time high. Default 10, max 100 per call. Data provided by CoinGecko. Also on x402 Bazaar

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