agent402.tools

• https://agent402.tools/api/a2a-card-fetch

  Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura…

  AlgorandAgents

  n/a/ request

  2026-10-27

• https://agent402.tools/api/a2a-card-validate

  Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa…

  AlgorandAgents

  n/a/ request

  2026-10-27

• https://agent402.tools/api/action-gate

  Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR…

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/add-time

  Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp.

  AlgorandOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/add-time

  Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp.

  AlgorandOther

  n/a/ request

  2026-11-03

• https://agent402.tools/api/address-label

  Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa…

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/address-label

  Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa…

  AlgorandOnchain data

  n/a/ request

  2026-10-30

• https://agent402.tools/api/age

  Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/age

  Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days.

  AlgorandDeveloper tools

  n/a/ request

  2026-11-04

• https://agent402.tools/api/amortization

  Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment.

  AlgorandOther

  n/a/ request

  2026-11-05

• https://agent402.tools/api/amortization

  Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. …

  AlgorandOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/annuity

  Present and future value of a level annuity (equal periodic payments). Supports an ordinary annuity (payments at period end) and an annuity-due (payments at period start).

  AlgorandOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/answer

  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 fo…

  AlgorandSearch

  n/a/ request

  2026-10-28

• https://agent402.tools/api/answer

  One call returns a direct answer to a natural-language question, written by a model from a live web search, with numbered source citations (URL, snippet) and a citation count. Use it when an agent needs a current answer…

  AlgorandSearch

  n/a/ request

  2026-11-06

• https://agent402.tools/api/archive-snapshot

  Look up a URL in the Internet Archive's Wayback Machine: returns the archived snapshot closest to an optional timestamp (default: most recent), with the snapshot URL, capture time, and archived HTTP status. Useful for c…

  AlgorandWeb data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/asn-info

  Look up the Autonomous System (ASN), prefix, country, registry, and allocation date for an IPv4 address - or for a hostname (which is resolved first). Uses a free public DNS-based IP→ASN mapping service; no HTTPS upstre…

  AlgorandIdentity

  n/a/ request

  2026-10-27

• https://agent402.tools/api/asset-transfers

  Token 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…

  AlgorandOnchain data

  n/a/ request

  2026-10-27

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

  Extract/convert the audio track of any media URL (mp4, mov, wav, m4a, ogg…) to MP3 - the "mp4 to mp3" conversion, deterministic ffmpeg, no AI. Body: {"url":"https://…/video.mp4","bitrate":"192k"?}. Returns the MP3 as ba…

  AlgorandMedia

  n/a/ request

  2026-10-27

• https://agent402.tools/api/audio-normalize

  Loudness-normalize any audio/video URL to a target LUFS with ffmpeg's loudnorm (EBU R128) and return MP3 - consistent levels for podcasts, clips, and TTS output. Body: {"url":"https://…/audio.wav","targetLufs":-16?}.

  AlgorandMedia

  n/a/ request

  2026-10-27

• https://agent402.tools/api/b20-activation-check

  Is 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.

  AlgorandOnchain data

  n/a/ request

  2026-11-03

• https://agent402.tools/api/b20-activation-check

  Is 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.

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/b20-feature-id

  Pure-CPU helper: turn a B20 feature string (e.g. base.b20_asset) into its bytes32 feature id and ready-to-send isActivated(bytes32) calldata for the Activation Registry. No network egress.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/b20-memos

  Payment memos attached to B20 transfers: pairs each Memo(address,bytes32) log with its Transfer at the previous log index (same tx, same token). Give a tx hash for one transaction, or scan a block window. Returns memoHe…

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/b20-new-tokens

  Recently deployed B20 tokens on Base: scans the factory's B20Created logs over a block window, locates each new token by its 0xB200 address prefix, and enriches it with live name/symbol/decimals eth_calls.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/b20-token-info

  ERC-20 metadata plus B20 signals for any Base address: name, symbol, decimals, total supply, best-effort paused/cap, bytecode size, and whether the address carries the factory-issued 0xB200 prefix. Works on plain ERC-20…

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/b20-verify

  Boolean 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.

  AlgorandOther

  n/a/ request

  2026-10-27

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

  Decode 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). Deterministi…

  AlgorandMedia

  n/a/ request

  2026-10-27

• https://agent402.tools/api/barcode-lookup

  Look 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).

  AlgorandMedia

  n/a/ request

  2026-10-27

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

  Convert an integer between number bases (radix 2-36), e.g. binary↔hex↔decimal. Arbitrary size via BigInt.

  AlgorandMedia

  n/a/ request

  2026-10-27

• https://agent402.tools/api/base32

  Base32 (RFC 4648) encode or decode text. mode: encode (default) or decode.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/base58

  Base58 encode or decode text (Bitcoin/IPFS alphabet). mode: encode (default) or decode.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/base64

  Base64 encode or decode text. mode: encode (default) or decode. Handles URL-safe base64 on decode.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/bestsellers

  What agents actually pay for across a 500+ tool x402 catalog: the tools ranked by settled calls, distinct buyers and dollars over a window you choose, read from the seller's own sales ledger rather than the chain. Use i…

  AlgorandOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/bestsellers

  What agents actually pay for across a 500+ tool x402 catalog: the tools ranked by settled calls, distinct buyers and dollars over a window you choose, read from the seller's own sales ledger rather than the chain.

  AlgorandOther

  n/a/ request

  2026-11-06

• https://agent402.tools/api/black-scholes

  Price a European option (call or put) with the Black-Scholes-Merton model, plus the greeks (delta, gamma, vega, theta, rho). Continuous dividend yield supported. Greeks are per unit: theta is per year, vega per 1.00 cha…

  AlgorandMarket data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/block-info

  Header-level detail for one block on Ethereum, Base, Polygon, Arbitrum, or Optimism: hash, timestamp (unix + ISO), transaction count, gas used/limit, base fee. Pass a block number, 0x hex, or "latest". Keyless multi-end…

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/block-info

  Header-level detail for one block on Ethereum, Base, Polygon, Arbitrum, or Optimism: hash, timestamp (unix + ISO), transaction count, gas used/limit, base fee. Pass a block number, 0x hex, or "latest". Keyless multi-end…

  AlgorandOnchain data

  n/a/ request

  2026-11-04

• https://agent402.tools/api/block-number

  The latest block number on Ethereum, Base, Polygon, Arbitrum or Optimism from keyless public nodes with fallback. Use it as the cheapest possible on-chain read: a liveness check for a chain, a timestamp anchor for a que…

  AlgorandOnchain data

  n/a/ request

  2026-11-04

• https://agent402.tools/api/block-number

  The latest block number on Ethereum, Base, Polygon, Arbitrum or Optimism from keyless public nodes with fallback. Use it as the cheapest possible on-chain read: a liveness check for a chain, a timestamp anchor for a que…

  AlgorandOnchain data

  n/a/ request

  2026-10-28

• https://agent402.tools/api/block-receipts

  Every transaction receipt in one block, fetched as a single upstream read and summarized: tx count, succeeded vs failed, total gas used, total fees, log count, contract creations, tx-type mix - plus compact per-transact…

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/bond-price

  Price 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.

  AlgorandMarket data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/bond-ytm

  Solve a bond's yield to maturity from its market price - the annual rate that present-values the coupons plus face to that price. Bracketed bisection root-find.

  AlgorandMarket data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/break-even

  Break-even point for a product: the units and revenue at which total revenue covers fixed plus variable costs. Also returns contribution margin and margin ratio.

  AlgorandCommerce

  n/a/ request

  2026-10-27

• https://agent402.tools/api/brotli-compress

  Compress a string with Brotli (RFC 7932) and return it as base64. Brotli typically beats gzip by 15-25% on text - useful when bytes matter (e.g. cramming context into an LLM prompt, fitting under a transport cap). Slowe…

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/brotli-decompress

  Decompress a base64-encoded Brotli payload. Returns the result as utf8 (text) or base64 (binary). Refuses to expand past 10MB to defend against zip bombs.

  AlgorandDeveloper tools

  n/a/ request

  2026-10-27

• https://agent402.tools/api/business-days

  Count business days (Mon–Fri) between two dates, inclusive of the start, exclusive of the end. Optional list of holiday dates to skip.

  AlgorandOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/cagr

  Compound annual growth rate between a beginning and ending value over N years: (end/begin)^(1/years) - 1. Also returns total growth over the whole period.

  AlgorandOther

  n/a/ request

  2026-10-27

• https://agent402.tools/api/calc

  Safely evaluate an arithmetic expression (+ - * / % ^ and parentheses). No code execution - a real parser, not eval.

  AlgorandOther

  n/a/ request

  2026-10-27

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

  Decode 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, …

  AlgorandOnchain data

  n/a/ request

  2026-10-27

• https://agent402.tools/api/captcha-generate

  Mint a stateless captcha challenge to gate your OWN endpoint: returns a human prompt plus a salted sha256 answer hash you keep and verify later (sha256(salt + normalized answer) === answerHash) - no server state, no sha…

  AlgorandDeveloper 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.