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/ens-resolve—No price listedResolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet. On mppscan and x402 Bazaar
• POST/api/defi-yield-history—No price listedDaily APY and TVL history for one yield pool, up to ten years, with a summary of latest, minimum, maximum and mean APY and the TVL change over the window. Use it when an agent is judging whether a pool's current yield is typical or an outlier before allocating to it. On mppscan and x402 Bazaar
• GET/api/device-510k—No price listedSearch FDA 510(k) premarket clearances (openFDA) by applicant, three-letter product code, K number or device name: decision and date, clearance type, device class, regulation number, the FDA classification name, medical specialty, and a link to the FDA record. Newest decision first; the answer says how many clearances matched. Live FDA data, no key. On x402 Bazaar
• POST/api/gzip—No price listedCompress a string with gzip (RFC 1952) and return it as base64. Reports input bytes, output bytes, and the compression ratio so you can decide if it was worth doing. Input can be plain text (utf8) or already-binary content (base64 or hex). On mppscan and x402 Bazaar
• POST/api/onchain-sql—No price listedRun read-only SQL against indexed, DECODED blockchain data - base.events (decoded logs with parameters), base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions (builder codes), plus solana.instructions and hyperevm.events. ClickHouse-dialect SELECTs, server-side grammar validation, up to 50k rows / 30s / 12 joins. Ask Base anything - token flows, event analytics, gas studies - in one call, no indexer to run. On mppscan and x402 Bazaar
• GET/api/world-bank-search—No price listedSearch the World Bank indicator catalog (1,400+ indicators across GDP, demographics, health, environment, education, etc.) by keyword. Returns indicator codes you can feed into /api/world-bank-indicator. On mppscan and x402 Bazaar
• POST/api/base-convert—No price listedConvert an integer between number bases (radix 2-36), e.g. binary↔hex↔decimal. Arbitrary size via BigInt. On mppscan and x402 Bazaar
• POST/api/skill/data-convert—No price listed On mppscan
• POST/api/skill/sec-filings-deep-dive—No price listedPull the full EDGAR picture of a US public company in one workflow: recent filings, key financial time series, insider trades, and full-text search across the corpus. SEC filings deep-dive skill pack: one x402 payment runs 7 underlying tools (edgar-company-lookup, edgar-filings, edgar-company-facts, edgar-company-concept, edgar-insider-trades, edgar-search, edgar-13f-holdings); partial-success per step. On mppscan and x402 Bazaar
• GET/api/reverse-geocode—No price listedResolve a lat/lon to a structured postal address: road, house number, city, state, postcode, country (with ISO code). No key. On mppscan and x402 Bazaar
• POST/api/dkim-lookup—No price listedFetch and parse a DKIM public-key record at <selector>._domainkey.<domain> (RFC 6376). Returns the parsed key params (algorithm, length, flags) so you can verify rotation status or key strength. Caller must know the selector - use email-deliverability if you don't. On mppscan and x402 Bazaar
• POST/api/openapi-to-curl—No price listedBuild a runnable curl command for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId (preferred) or by method + path, substitute path parameters using the spec's example values, include required query and header parameters with their example values, and attach a JSON body when the operation defines one. Returns the structured request (method, url, headers, body) alongside the assembled curl string with POSIX single-quote escaping. On mppscan and x402 Bazaar
• POST/api/skill/validator-suite—No price listed On mppscan
• POST/api/multi-search—No price listedRun 2-5 web searches in one call with a 20% volume discount vs. individual searches. Each query returns ranked results (title, URL, snippet). Ideal for multi-faceted research or comparing sources on different aspects of a topic. If some queries fail upstream, the call returns the ones that succeeded with an error on each failed query and is charged; a call where every query fails is not charged. On mppscan and x402 Bazaar
• POST/v1/metered/responses—No price listedThe OpenAI Responses wire priced from the request itself: each 402 quotes this exact body, from $0.001, and upto buyers settle actual usage under it. Use it when an agent built on the Responses API or the OpenAI Agents SDK wants per-call payment sized to what it sends. On mppscan and x402 Bazaar
• POST/api/nft-floor—No price listedGet the current floor price for an NFT collection across OpenSea + LooksRare (Ethereum). Returns per-marketplace floor (ETH), collection URL, retrieval timestamp, and the cheapest cross-marketplace floor with the marketplace tag. Use to price a collection without scraping marketplace UIs, or to detect cross-venue arbitrage gaps. On mppscan and x402 Bazaar
• POST/api/skill/media-pipeline—No price listedThe 'user uploaded a thing, normalize it before storing' workflow. Probe the file (image or audio/video) with media-info, decode any embedded barcodes/QRs, resize and thumbnail the image, convert it to a web-friendly format, and normalize audio loudness to broadcast standard. Six tools, one canonical normalize-on-upload pipeline that turns arbitrary user uploads into predictable storage artifacts. On mppscan and x402 Bazaar
• POST/api/sol-token-pairs—No price listedEvery DEX pair trading a Solana token mint (Raydium, Orca, Meteora, Pump.fun AMM and the rest), sorted by liquidity: pair address, DEX, price in USD and in the quote token, liquidity, FDV and market cap, 5m/1h/6h/24h volume and price change, buy/sell transaction counts, pair age in hours, plus totals across pairs. One request to a public DEX pair index, keyless. On mppscan and x402 Bazaar
• GET/api/x402/seller-trust—No price listedTrust evidence for any x402 seller origin: is it indexed, does its manifest parse, how many tools does it publish, which chains does it actually advertise, how many settled calls has it been observed receiving on-chain, and would our own Smart Order Router spend buyer money on it. Returns the router's gate field by field, so a refusal is explainable. Never fetches the seller at call time - this is our accumulated crawl and settlement evidence, not a liveness probe. On mppscan and x402 Bazaar
• POST/api/sol-token-safety—No price listedSafety verdict for one Solana token mint: a graded risk score with the concrete reasons behind it, mint and freeze authority state, how much of the liquidity pool is locked, top-holder concentration, holder count and whether the token is verified. Use it before an agent buys, quotes, or recommends an unfamiliar token, and to screen a list of mints in seconds. On mppscan and x402 Bazaar
• POST/v1/rerank—No price listedRerank documents against a query over x402 - the Cohere /rerank wire ({query, documents[], top_n} -> results with relevance_score), served by cohere/rerank-v3.5, $0.002 per call in USDC, no API key, no signup. Up to 50 documents (1,600 chars each, 40k total) and a 500-char query per call. On mppscan and x402 Bazaar
• POST/api/openapi-lint—No price listedScore an OpenAPI 3.x or Swagger 2.x spec on agent-readiness - i.e. does an LLM-driven caller have what it needs to call the API correctly without guessing. Returns a 0..100 score, severity counts, and a structured list of violations with stable rule codes. Checks: documented title/servers/paths, per-operation summary/description/operationId/tags, documented 2xx + error responses, param descriptions/schemas/examples, response descriptions, JSON response schemas. On mppscan and x402 Bazaar
• POST/api/skill/a11y-audit—No price listed On mppscan
• POST/api/tts-hd—No price listedConvert text to speech using OpenAI TTS-1-HD (higher fidelity). Returns base64-encoded audio. Same interface as /api/tts but with better audio quality. No API key needed; pay per call via x402. Text capped at 2000 chars. On mppscan and x402 Bazaar
• GET/api/vehicle-recalls—No price listedNHTSA safety recalls for a vehicle by make/model/year: campaign number, affected component, summary, consequence, and remedy. Live gov data, no key. On mppscan and x402 Bazaar

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