agent402.tools

• https://agent402.tools/api/treasury-debt

  Most recent total US public debt outstanding (the headline national-debt number, daily) from the Treasury "Debt to the Penny" feed. Public domain, no key. No params.

  StellarMarket data

  n/a/ request

  2026-11-03

• https://agent402.tools/api/treasury-yield-curve

  Latest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), publi…

  StellarMarket data

  n/a/ request

  2026-11-06

• https://agent402.tools/api/treasury-yield-history

  Last N business days of US Treasury constant-maturity yields, oldest→newest. Source: FRED DGS* series (St. Louis Fed), public domain.

  StellarMarket data

  n/a/ request

  2026-11-04

• https://agent402.tools/api/truncate

  Truncate text to a maximum length, adding an ellipsis (or custom suffix). Optionally break on word boundaries.

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/tts

  Convert text to speech with the eleven-v4-turbo model, priced per request from the length of the text. The quote is $0.005 plus $0.0575 per 1,000 characters of text, rounded up to the next $0.001 (2,000 characters: $0.1…

  StellarAI models

  n/a/ request

  2026-11-06

• https://agent402.tools/api/tts-hd

  Convert text to speech with the eleven-v4 model, priced per request from the length of the text. It is the most expressive speech tier, and the quote is $0.010 plus $0.115 per 1,000 characters of text, rounded up to the…

  StellarAI models

  n/a/ request

  2026-10-30

• https://agent402.tools/api/tts-lite

  Convert text to speech with Kokoro-82M, a fraction of the price of /api/tts. Returns base64-encoded mp3 or pcm. The same request shape and the same ten voice names as /api/tts, mapped to Kokoro's own voices; the voice i…

  StellarAI models

  n/a/ request

  2026-11-05

• https://agent402.tools/api/tx-receipt

  Full receipt for a transaction hash in one call: status, block, from/to, value, gas used vs limit, effective gas price, total fee, tx type, calldata selector, contract created, plus every ERC-20 / ERC-721 / ERC-1155 Tra…

  StellarOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/tx-simulate

  Dry-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 (ethe…

  StellarOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/tx-status

  Check the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei/Arc/Robinhood Chain: success / failed / pending / not found, with block, from, to, gas used. Rea…

  StellarOnchain data

  n/a/ request

  2026-11-03

• https://agent402.tools/api/ulid

  Generate ULIDs (sortable, timestamp-prefixed identifiers).

  StellarOther

  n/a/ request

  2026-11-03

• https://agent402.tools/api/unemployment-rate

  Latest US unemployment rate (current, as of date) plus a trailing N-month history of {date, value} for trend, seasonally adjusted, in percent. Source: FRED UNRATE (Bureau of Labor Statistics). A month with no published …

  StellarMarket data

  n/a/ request

  2026-11-04

• https://agent402.tools/api/unit-convert

  Convert 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, kilogr…

  StellarDeveloper tools

  n/a/ request

  2026-11-04

• https://agent402.tools/api/unshorten-url

  Follow a short link's redirect chain (bit.ly, t.co, youtu.be, tracking links, …) without downloading any page body: returns the final URL, the final HTTP status, and every hop with its status code and Location target. C…

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/url-code

  Percent-encode or decode a string for URLs. mode: encode (default) or decode. component: true (default) uses encodeURIComponent semantics.

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/url-parse

  Parse a URL into components: protocol, host, port, path, query params (decoded), hash, origin, punycode hostname.

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/usdc-balance

  Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, Sei, or Arc. Read-only on-chain call. The minimal single-token read for payment flows - for EVERY token a wall…

  StellarOnchain data

  n/a/ request

  2026-11-01

• https://agent402.tools/api/user-agent

  Heuristic user-agent string parser: browser, version, OS, device class, and bot detection.

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/uuid

  UUIDs on demand: version 4 (random) or version 7 (time-ordered, sortable), up to 100 per call. Use it when an agent needs identifiers for records, requests or files, or a sub-cent call to test an x402 client end to end …

  StellarDeveloper tools

  n/a/ request

  2026-11-03

• https://agent402.tools/api/uuid-validate

  Validate a UUID and report its version (1-8) and variant. Accepts hyphenated or braced forms.

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/vehicle-recalls

  NHTSA safety recalls for a vehicle by make/model/year: campaign number, affected component, summary, consequence, and remedy. Live gov data, no key.

  StellarOther

  n/a/ request

  2026-11-03

• https://agent402.tools/api/vin-decode

  Decode a vehicle VIN via the US NHTSA vPIC database: make, model, year, trim, body class, engine, fuel type, plant and vehicle type. Accepts full or partial VINs. Use it when an agent holds a VIN and needs the vehicle's…

  StellarOther

  n/a/ request

  2026-11-06

• https://agent402.tools/api/wallet-balance

  Look up the native coin balance (ETH/MATIC) plus every ERC-20 holding for a wallet address on Ethereum, Base, Polygon, Arbitrum, or Optimism. Returns clean decimal balances (already scaled by token decimals) plus symbol…

  StellarOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/wallet-balances

  All token balances for any address in one call, from an indexed chain-data API - ERC-20 + native on EVM, SPL on Solana; no per-token contract calls, no RPC wrangling. Networks: base, ethereum, base-sepolia, solana, sola…

  StellarOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/wallet-transactions

  Return 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, ass…

  StellarOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/weather-air-quality

  Current air quality index and pollutant concentrations for any location: US AQI, PM2.5, PM10, ozone, NO2, SO2, CO. Air quality API, no key, global.

  StellarOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/weather-alerts

  Active National Weather Service alerts for a US state as clean JSON: event, severity, headline, affected areas, onset/expiry. Live government data, no key.

  StellarOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/weather-current

  Current weather conditions for any location on Earth: temperature, feels-like, humidity, wind speed/direction/gusts, precipitation, cloud cover, pressure, and human-readable condition. No key, global.

  StellarOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/weather-daily

  7-day daily weather forecast for any location: high/low temp, precipitation sum and probability, max wind, UV index, sunrise/sunset. No key, global.

  StellarOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/weather-forecast

  Multi-period weather forecast for a US location from api.weather.gov (NWS, public domain). Give latitude and longitude; returns the place plus upcoming forecast periods (temp, wind, conditions). US coverage only.

  StellarOther

  n/a/ request

  2026-11-03

• https://agent402.tools/api/weather-history

  Historical daily weather for any location and date range (up to 1 year): high/low temp, precipitation, wind, conditions. Historical archive, no key, global. Data from 1940 to 5 days ago.

  StellarOther

  n/a/ request

  2026-11-07

• https://agent402.tools/api/weather-hourly

  48-hour hourly weather forecast for any location: temperature, precipitation probability and amount, wind, cloud cover, humidity. No key, global.

  StellarOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/webhook-verify

  Verify a webhook's HMAC signature against the correct per-provider scheme: GitHub (X-Hub-Signature-256, sha256=hex), Stripe (Stripe-Signature t/v1 over "<t>.<body>" with replay tolerance), Shopify (X-Shopify-Hmac-Sha256…

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/whois

  Domain registration data via RDAP (the structured WHOIS successor): registrar, creation/expiry dates, status, nameservers.

  StellarIdentity

  n/a/ request

  2026-10-27

• https://agent402.tools/api/wikidata-entity

  Company/person/organization facts from Wikidata. Pass an entity id (e.g. Q312 for Apple Inc.) for the enrichment record - label, description, aliases, and a curated fact set (inception, HQ location, country, industry, f…

  StellarIdentity

  n/a/ request

  2026-10-27

• https://agent402.tools/api/world-bank-indicator

  Fetch a World Bank indicator time series for a country (e.g. GDP, inflation, unemployment, population). Open data, no key.

  StellarOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/world-bank-search

  Search 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.

  StellarSearch

  n/a/ request

  2026-10-27

• https://agent402.tools/api/x-search-recent

  Search public tweets from the last 7 days on X (Twitter) by query, using X API v2 search operators (keywords, from:, #hashtag, lang:, -is:retweet). Returns up to 10 tweets per call with text, created time, language, eng…

  StellarWeb data

  n/a/ request

  2026-11-01

• https://agent402.tools/api/x-tweet

  Fetch one public tweet on X (Twitter) by id: text, created time, language, conversation id, engagement metrics (likes, retweets, replies, quotes, bookmarks, impressions) and the author's username, name and verification.

  StellarWeb data

  n/a/ request

  2026-11-06

• https://agent402.tools/api/x-user

  Look up one X (Twitter) account by username: id, display name, bio, account creation date, verification status and type, location, link, protected flag, and public metrics (followers, following, tweet count, listed coun…

  StellarWeb data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/x-user-tweets

  Fetch an X (Twitter) account's most recent tweets by user id or username (username is resolved first). Options to exclude retweets and replies, page with pagination_token, or fetch only tweets newer than since_id. Each …

  StellarWeb data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/x-users-lookup

  Look up up to 10 X (Twitter) accounts by username in one call. Returns each found profile with public metrics (followers, following, tweets, listed), verification status and bio, plus the list of usernames X did not res…

  StellarWeb data

  n/a/ request

  2026-10-28

• https://agent402.tools/api/x402-audit

  Grade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Attacks on x402' failure modes. Probes the URL's 402 challenge (never pays) and scores TLS transport, g…

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/x402-market-pulse

  Live cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, defaul…

  StellarMarket data

  n/a/ request

  2026-11-03

• https://agent402.tools/api/x402-quote

  Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay.

  StellarDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/x402-trending

  Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching t…

  StellarOther

  n/a/ request

  2026-11-04

• https://agent402.tools/api/x402-verify

  Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum …

  StellarOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/x402/seller-trust

  Trust 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,…

  StellarOther

  n/a/ request

  2026-11-01

• https://agent402.tools/api/xlsx-create

  Turn rows of data into a real Excel workbook (.xlsx) in one call. Send "sheets": each a "name" plus "rows" as an array of arrays or an array of objects (an optional "columns" list sets the order).

  StellarMedia

  n/a/ request

  2026-11-05

• https://agent402.tools/api/xml-to-json

  Parse XML into a JSON object tree (attributes under _attrs, text under _text; repeated elements become arrays).

  StellarDeveloper tools

  n/a/ request

  2026-10-27

By chain

One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.

Unknown. Prices are decoded only for USDC on Base and Solana.