agent402.tools

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

  Parse CSV (quoted fields supported) into a JSON array of objects, using the first row as headers (header=false for arrays).

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/csv-to-md

  Convert CSV into a GitHub-flavored Markdown table (first row is the header).

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/defi-chain-tvl-history

  Daily total value locked history for one chain or for all of DeFi, up to ten years of points, with latest, first, minimum, maximum and mean and the change over the window. Use it when an agent is charting a chain's grow…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/defi-chains

  Blockchains ranked by DeFi total value locked with each chain's share of the total, native token, EVM chain id and CoinGecko id. Use it when an agent is comparing chains by DeFi activity or needs the canonical ids to qu…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/defi-fees

  Protocols ranked by fees paid by users or by revenue kept, with 24h, 7d, 30d, 1y and all-time totals, change, category and chains, and chain-level gas fees on request. Use it when an agent is comparing protocols on real…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/defi-protocol

  One DeFi protocol in full: TVL rank, TVL per chain, recent change, market cap to TVL, token, website, audits and parent, with name suggestions when the slug is unknown. Use it when an agent is researching a specific pro…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/defi-protocols

  DeFi protocols ranked by total value locked, filterable by category, chain or name, each with rank, chains, TVL, 1h, 1d and 7d change, market cap and the market cap to TVL ratio. Use it when an agent needs the league ta…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

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

  Daily 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 i…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/defi-yields

  Live yield opportunities across DeFi, filterable by chain, protocol, token symbol, stablecoin-only, minimum TVL and minimum APY: pool identity, TVL in dollars, total APY split into base and reward, 1-day, 7-day and 30-d…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/dex-pool

  Read on-chain state of a Uniswap V3 pool: token0/token1 addresses + decimals, fee tier, current sqrtPriceX96, tick, in-range liquidity, and the decoded human-readable spot price (token1 per token0). One $0.002 call repl…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

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

  Spot quote for swapping through a Uniswap V3 pool at the current tick. amountIn is in human units (not wei). zeroForOne=true sends token0 → token1; false sends token1 → token0. Returns amountOut net of the pool's fee ti…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

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

  Fetch 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 sel…

  SolanaIdentity

  $0.002/ request

  2026-10-27

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

  Resolve 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.

  SolanaIdentity

  $0.002/ request

  2026-10-30

• https://agent402.tools/api/dns-propagation

  Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface divergences. The first call you make after a DNS change - confirms the world sees what you intended.

  SolanaIdentity

  $0.002/ request

  2026-10-27

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

  Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key.

  SolanaOther

  $0.002/ request

  2026-11-03

• https://agent402.tools/api/eas-attestations

  List EAS (Ethereum Attestation Service) attestations for an address as recipient, attester, or either, on mainnet/Base/Optimism/Arbitrum/Sepolia. Returns attestation id, attester, recipient, schema id, revocable/revoked…

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/email-deliverability

  End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.

  SolanaIdentity

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/embed

  Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars.

  SolanaAI models

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/ens-bulk-resolve

  Reverse-resolve a batch of Ethereum addresses to ENS primary names + avatar URLs (up to 50 per call). Returns one row per address with name (or null), displayName (with checksum if no name), and avatar URI. Use to label…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/erc721-owner

  Who owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/eth-call

  Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-only whitelist (eth_call, eth_getLogs, eth_getBlockByNumber, eth_getTransactionReceipt, eth_chainId, …

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/extract-entities

  Pull emails, URLs, IPv4s, @mentions, and #hashtags out of free text. Returns deduped lists.

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/farcaster-by-address

  Reverse-lookup an Ethereum address to its Farcaster account (via verified address). Returns FID, username, display name, bio, follower/following counts, and Warpcast URL, or found=false if the address has not verified o…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/farcaster-profile

  Lookup a Farcaster profile by username or FID. Returns FID, username, display name, bio, profile picture URL, follower/following counts, and the canonical Warpcast URL. Use to label cast authors, validate a Farcaster ha…

  SolanaIdentity

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/fetch-json

  Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …

  SolanaWeb data

  $0.002/ request

  2026-11-04

• https://agent402.tools/api/fx-historical

  Historical foreign-exchange rate for a specific date using European Central Bank reference rates. Returns the rate that was published on (or rolled forward to) the requested date.

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/fx-rate

  Live currency conversion using European Central Bank reference rates. Converts an amount between two currencies and returns the rate and date.

  SolanaMarket data

  $0.002/ request

  2026-11-03

• https://agent402.tools/api/gov-data

  Search 300,000+ US government datasets on catalog.data.gov (Catalog API): titles, publishing org, formats, and direct resource URLs - the index agents need before fetching public data.

  SolanaOther

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/gravatar-check

  Check whether an email address has a Gravatar: hashes the normalized email (MD5, pure CPU - the raw address is never sent upstream), probes gravatar.com for an avatar, and fetches the public profile when one exists (dis…

  SolanaIdentity

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/image-crop

  Crop an image to a pixel box, and/or rotate (90/180/270) and flip it - applied in that order. Send a public image URL or a base64 image. Returns the result as binary, or as a JSON data URI with dataUri:true. Determinist…

  SolanaMedia

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/ip-info

  Classify an IP address: version, public/private/loopback/link-local, integer form, and reverse-DNS (PTR) lookup.

  SolanaIdentity

  $0.002/ request

  2026-10-27

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

  Convert a JSON array of objects to CSV. Nested objects are flattened to dot-path columns.

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/kalshi-event

  Get full detail for a single Kalshi event with all its nested markets. Mutually-exclusive flag tells you whether the markets partition outcome space (e.g. one winner). Useful for: viewing all candidates in an election, …

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/kalshi-live-data

  The live feed a Kalshi event settles on, from Kalshi's free live_data tier: a crypto event returns the CF Benchmarks price series, candlesticks (15M, 1M) and the maturity time; an economic-data event (CPI, jobs) returns…

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/kalshi-markets

  List Kalshi markets (CFTC-regulated US event contracts). Filter by status (open/closed/settled/unopened) or by event ticker. Returns yes/no bid/ask, last price, volume, open interest, and the resting contract size at th…

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/kalshi-weather-index

  Kalshi's own minute-resolution city temperature index (Fahrenheit), the series its hourly temperature markets settle on, computed from weighted member stations. Ask for a trailing window (lastSec, default one hour, max …

  SolanaMarket data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/keywords

  Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, and dedup.

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/l2-gas-comparison

  Current gas snapshot across Ethereum + supported L2s (Base, Polygon, Arbitrum, Optimism), sorted cheapest-first. Returns gas price in gwei, latest block number, chain id, and an isL2 flag per chain. Use to route a trans…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/l2-tvl

  Top 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 …

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/meta

  Fetch page metadata for a URL: title, description, OpenGraph, Twitter cards, canonical URL, favicon.

  SolanaWeb data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/mev-block-payment

  Look up the MEV-Boost payment for a specific slot or block number from a major MEV-Boost relay's public data API. Returns the builder, proposer, value paid in ETH, gas usage, and tx count. Returns found=false if the blo…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/mev-builder-share

  Builder market share aggregated over the last N MEV-Boost blocks from a major MEV-Boost relay's public data API. Returns per-builder block count, share percent, total ETH paid to proposers, and average per block. Use to…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/mev-recent-blocks

  Last N MEV-Boost-built blocks from a major MEV-Boost relay's public data API. For each block: slot, block number/hash, builder pubkey, proposer pubkey, gas used/limit, ETH paid to the proposer, and tx count. Use to moni…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/moderate

  Check text for harmful content using OpenAI moderation (omni-moderation-latest). Returns flagged status, category breakdown (harassment, hate, self-harm, sexual, violence, etc.), and confidence scores. No API key needed…

  SolanaAI models

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/nft-collection

  Fetch NFT collection (ERC-721 / ERC-1155) metadata by contract address on Ethereum, Base, Polygon, Arbitrum, or Optimism: name, symbol, token type, total supply, deployer, OpenSea slug + image, floor (ETH), Twitter/Disc…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/nft-floor

  Get 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 market…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/nft-holdings

  Return the NFTs owned by a wallet address on a given network. Each row carries the collection name, contract address, token ID, image URL (where available), and ERC-721 vs ERC-1155 standard. Up to 100 per call - paginat…

  SolanaOnchain data

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/onchain-sql-schema

  The table + column schema for the onchain-sql tool - every queryable table (base.events, base.transactions, base.blocks, base.decoded_user_operations, base.transaction_attributions, solana.instructions, …) with its colu…

  SolanaDeveloper tools

  $0.002/ request

  2026-11-04

• https://agent402.tools/api/openapi-lint

  Score 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 …

  SolanaDeveloper tools

  $0.002/ request

  2026-10-27

• https://agent402.tools/api/openapi-required-params

  For one operation, return the minimum set of inputs an agent must provide to make a successful call. Locate the op by `operationId` (preferred) or by `method`+`path`. Output is a single flat array tagged by `in`: `path`…

  SolanaDeveloper tools

  $0.002/ 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.

The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.