Discover / agent402.tools

Web answer

■ Challenge detected

A synthesized answer to a natural-language question, grounded in a live web search and returned with source citations (URL, snippet). Use it when an agent needs a direct, current answer plus the receipts to verify or follow up, instead of reading several pages itself.

Listed price
$0.08
Challenge detected
11 of the last 11 checks
Median response
149 ms
Last checked
18 Oct, 15:21 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://agent402.tools/api/answer
# 402 Payment Required: pay with a MPP client, then send the request again.
691 listed endpoints · on mppscan

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/compress-compareNo price listedRun the same input through gzip, brotli, and raw deflate at max settings and report each one's output size and ratio. Use this to decide which algorithm to actually use - the answer depends on your content (binary often resists compression entirely; English prose squeezes well with brotli; JSON sits in between). Also on x402 Bazaar
  • POST/api/lei-lookupNo price listedLook up a legal entity in the official GLEIF registry. Pass a 20-character LEI for the full record - legal name, jurisdiction, legal form, addresses, registration status, and the reported direct + ultimate parent entities - or pass a company name to fulltext-search the registry and get ranked candidate LEIs. Unknown LEIs return {found:false}; parents that aren't reported return null. Official registry data, keyless. Also on x402 Bazaar
  • POST/api/dns-lookupNo price listedResolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API. Also on x402 Bazaar
  • POST/api/perp-fundingNo price listedCurrent and historical funding rate for one perpetual futures market, from a live derivatives venue: hourly rate, the 8-hour and annualized equivalents, the mark-vs-oracle premium, and a window of past prints with average, minimum, maximum and the share that were positive. Use it when an agent needs to know what holding a leveraged position costs right now, or wants to detect a funding regime flip before sizing a trade. Also on x402 Bazaar
  • GET/api/rwa-issuerNo price listedOne issuer of tokenized real-world assets by id: aggregate tokenized market cap, 24h cap change and 24h volume, plus every token it issues with symbol, name and contract address per platform (e.g. Coinbase's Base-chain tokenized Apple, Nvidia, Meta, Alphabet). Use rwa-issuers for ids. Cached in-process for 5 minutes. Data provided by CoinGecko. Also on x402 Bazaar
  • POST/api/srt-convertNo price listedConvert subtitles between SRT, WebVTT, plain text, and JSON cues. Send SRT or VTT text (auto-detected) - or a JSON cues array [{start,end,text}] with times in ms - and the target format. Deterministic, pure CPU. Also on x402 Bazaar
  • GET/api/premarket-quoteNo price listed
  • POST/api/braille-convertNo price listed
  • GET/api/barcode-lookupNo price listedLook up a product by its UPC/EAN barcode number via Open Food Facts (open data): name, brand, category, quantity, and nutrition grade. Pairs with /api/barcode-decode (image → number → product). Also on x402 Bazaar
  • POST/v1/chat/completionsNo price listedOpenAI-compatible chat completions paid per call in USDC: point any OpenAI SDK at this base URL and send a normal chat request, with the model chosen from a curated list and streaming supported. Use it when an agent needs a model answer without an API key or an account, one call at a time, with a receipt for each. Also on x402 Bazaar
  • POST/api/memory/incrNo price listedAtomically increment (or decrement) a numeric key and return the new value - a coordination primitive for counters, locks, and rate budgets shared across agents. Creates the key at 0 if absent. Retry safely with a requestId: a repeat with the same id returns the first answer and counts once; a retry without one counts again. Also on x402 Bazaar
  • POST/api/jwt-decodeNo price listedDecode a JWT without verification: header (algorithm), payload claims (subject, issuer, expiration), expiry status, and time remaining. (Decoding only - signatures are NOT verified.) Also on x402 Bazaar
  • POST/api/unit-convertNo price listedConvert a value between units of length, mass, temperature, volume, area, speed, time, data, pressure, energy, power, angle, frequency - every unit the retired convert-* endpoints handled (e.g. miles, kilometers, kilograms, pounds, stones, us-gallons, liters, fahrenheit, psi, bar, kilopascals, kilowatt-hours, joules, btu, horsepower, and imperial Russian versts, sazhens, arshins, poods and funts). Also on x402 Bazaar
  • GET/api/fed-fundsNo price listedCurrent effective federal funds rate (current, as of date, in percent) plus a trailing N-day history of {date, value}. Source: FRED DFF (Board of Governors), a daily series that includes weekends. Also on x402 Bazaar
  • POST/v1/metered/chat/completionsNo price listedOpenAI-compatible chat completions priced from the request itself: the 402 quotes this exact body, from $0.001, and a buyer on the upto scheme settles the tokens actually used under that quote. Use it when an agent sends large or variable prompts and wants to pay for what it sends, not a flat tier. Also on x402 Bazaar
  • POST/api/group-byNo price listed
  • GET/api/b20-activation-checkNo price listedIs B20 live on Base mainnet? Queries the Activation Registry precompile for base.b20_asset and base.b20_stablecoin (or a custom feature id). Honest pre-launch too: reports not-activated until the registry flips. Also on x402 Bazaar
  • POST/api/financeNo price listedFinancial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan). Also on x402 Bazaar
  • POST/api/soundexNo price listed
  • GET/api/drug-recallsNo price listedSearch FDA drug recall / enforcement records (openFDA): recalling firm, classification (Class I/II/III), reason, distribution, and dates. Live FDA data, no key. Also on x402 Bazaar
  • POST/v1/embeddingsNo price listedOpenAI-compatible text embeddings (text-embedding-3-small by default; 3-large and ada-002 supported), up to 64 inputs or 16k chars per call, returned in the standard OpenAI shape. Identical inputs repeated within 10 minutes are served free from cache. Use it for semantic search, clustering and retrieval from any OpenAI SDK by changing base_url. Also on x402 Bazaar
  • GET/api/edgar-filingsNo price listedRecent SEC filings for a company by ticker or CIK, newest first. Optionally filter by form type (10-K, 10-Q, 8-K, 4, S-1, etc.). Each row links to the primary document on SEC.gov. Source: data.sec.gov/submissions (public domain). Also on x402 Bazaar
  • POST/api/correlationNo price listedPearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated with a macro indicator? Are two FRED series moving together? Also on x402 Bazaar
  • POST/api/bond-priceNo price listedPrice a fixed-coupon bond from its yield to maturity: present-value the coupons plus face. Returns clean price, coupon per period, current yield, and premium/discount vs par. Also on x402 Bazaar
  • GET/api/date-formatNo price listedParse a datetime from any format (ISO 8601, Unix timestamp in seconds or milliseconds, RFC 2822, or natural date string) and return it in every common format: ISO 8601, Unix (seconds), Unix (ms), RFC 2822, date-only, time-only, day of week, and human-relative (e.g. '3 days ago'). Also on x402 Bazaar

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

Showing 25 of 691 listed endpoints. Next endpoints First endpoints

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/agent402.tools

Recent checks

26 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.18 Oct 2026
All 11 checks
When (UTC)ResultHTTPResponse
18 Oct, 15:21 UTCChallenge detected40296ms
17 Oct, 08:59 UTCChallenge detected402209ms
16 Oct, 04:38 UTCChallenge detected402138ms
14 Oct, 19:26 UTCChallenge detected402120ms
13 Oct, 00:46 UTCChallenge detected402149ms
11 Oct, 06:02 UTCChallenge detected402116ms
9 Oct, 21:31 UTCChallenge detected402250ms
8 Oct, 15:35 UTCChallenge detected402174ms
7 Oct, 09:33 UTCChallenge detected402336ms
5 Oct, 17:05 UTCChallenge detected402157ms
26 Sept, 05:02 UTCChallenge detected402130ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 18 Oct, 15:21 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Web answer?

Its listed price is $0.08.

What payment terms does Web answer advertise?

The listing advertises MPP, x402, Algorand, Arbitrum, Avalanche, Base, EVM chain 1329, EVM chain 143, EVM chain 42220, EVM chain 4663, Optimism, Polygon, Solana, Stellar and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Web answer listed?

In x402 Bazaar, mppscan and x402-list.com. Superstables first indexed it on 26 Sept 2026.

Something wrong on this page? Tell us.