x402 resource directory

Find paid HTTP operations and MCP tools by URL, host, method or tool name. Compare payment terms across networks and catalogs.

Distinct HTTP URLs
162,788
Distinct MCP URLs
43
Catalog observations
263,972
URLs with a 402 in 7 days
1,592
Network identifiers
181

These results as JSON

GET https://2s.io/api/convert/unit · 3 observations
Convert a value between units of measure: mass (g, kg, mg, lb, oz, t, st), length (m, km, cm, mm, in, ft, yd, mi), volume (l, ml, m3, gal, gal-imp, qt, pt, cup, floz, tbsp, tsp), area (m2, km2, ft2, acre, ha), and temperature (C, F, K). Units are matched case-insensitively with common aliases (kg/kilogram/kgs). Returns {value, from, to, dimension, result}. Exact factors — the ground-truth answer a CPG/ETL pipeline needs instead of an LLM approximating conversions. Cross-dimension conversions (kg

2s profile

  • Base · exact
    $0.0025 (USDC)
    Recipient 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
    Coinbase CDP · seen
    Coinbase CDP reports 2 calls and 2 unique payers in 30 days. Last call .
  • Solana · exact
    $0.0025 (USDC)
    Recipient TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn
    Coinbase CDP · seen
  • Base · exact
    $0.0025 (USDC)
    agentic.market · seen
GET https://2s.io/api/country/financials · 1 observation
Country-level financial and credit reference data: sovereign credit rating, equity risk premium, country risk premium, default spread, currency (name + ISO code), region/sub-region, and ISO country codes. Returns all ~249 countries by default, or pass code (ISO alpha-2 or alpha-3) to get one. Use it for cross-border valuation (discount-rate inputs) and sovereign-risk context — distinct from country.lookup (general reference). Data by Finnhub.

2s profile

  • Base · exact
    $0.0010 (USDC)
    agentic.market · seen
GET https://2s.io/api/country/lookup · 1 observation
Look up country metadata via REST Countries. Pass alpha2 (2-letter ISO 3166-1), alpha3 (3-letter), or name (with optional fullText=true for exact match). Returns common + official name, ISO codes, region + subregion, independence + UN-member flags, capital(s), population, area km², landlocked flag, neighboring borders (alpha-3), timezones, currencies (code → name + symbol), languages, calling code, flag emoji + SVG/PNG URLs, lat/lng coordinates, Google Maps + OSM URLs, driving side, top-level do

2s profile

  • Base · exact
    $0.0012 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/address-history · 3 observations
Transaction history for an Ethereum address (via Etherscan V2). Returns normal transactions newest-first: hash, block, timestamp, from/to, value (wei + ETH), gas used, gas price, decoded method id + function name, error flag, and any contract created. Paginate with page + offset; bound with startBlock/endBlock. Defaults to Ethereum mainnet; other EVM chains are reachable by chainId where upstream coverage allows. Net-new vs crypto.tx (single-hash receipt).

2s profile

  • Base · exact
    $0.0036 (USDC)
    Recipient 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
    Coinbase CDP · seen
    Coinbase CDP reports 105 calls and 4 unique payers in 30 days. Last call .
  • Solana · exact
    $0.0036 (USDC)
    Recipient TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn
    Coinbase CDP · seen
  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/address-safety · 1 observation
Malicious-wallet screen (via GoPlus, free/keyless). For any EVM address returns risk flags — cybercrime, money laundering, financial crime, darkweb, phishing, stealing/blackmail, fake KYC, mixer, sanctioned, honeypot-related, blacklist doubt and more — plus an overall malicious verdict and hit count. Counterparty risk check before interacting with an address.

2s profile

  • Base · exact
    $0.0020 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/address-screen · 3 observations
Sanctions-screen a crypto wallet address against the US Treasury OFAC SDN list's published Digital Currency Addresses (BTC/ETH/USDT/XMR and more). Exact match — returns whether the address is sanctioned, and for any hit the listed entity name, OFAC programs, source id, and the currency the address was listed under. Compliance check before transacting. Distinct from crypto.address-safety (GoPlus behavioral risk) — this is regulatory sanctions.

2s profile

  • Solana · exact
    $0.0050 (USDC)
    Recipient TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn
    Coinbase CDP · seen
    Coinbase CDP reports 1 calls and 1 unique payers in 30 days. Last call .
  • Base · exact
    $0.0050 (USDC)
    Recipient 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
    Coinbase CDP · seen
  • Base · exact
    $0.0050 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/address-validate · 3 observations
Validate a cryptocurrency address with full checksum verification (not just regex). Returns {chain, address, valid, canonical, format, reason}. Chains: btc (P2PKH, P2SH, Bech32 SegWit v0, Taproot Bech32m), eth (full EIP-55 checksum; non-checksummed flagged), sol (Ed25519 32-byte Base58), ltc (Base58Check L.../M.../3... + ltc1 Bech32), trx (T-prefix Base58Check 0x41), xrp (r-prefix custom Base58), bch (legacy Base58Check + bitcoincash:q... CashAddr). Catches typos via cryptographic checksum; cano

2s profile

  • Solana · exact
    $0.0025 (USDC)
    Recipient TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn
    Coinbase CDP · seen
    Coinbase CDP reports 1 calls and 1 unique payers in 30 days. Last call .
  • Base · exact
    $0.0025 (USDC)
    Recipient 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
    Coinbase CDP · seen
  • Base · exact
    $0.0025 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/balances · 1 observation
Live native + ERC-20 token balances for an EVM address (Base, Ethereum, Polygon, Arbitrum, Optimism; keyless). Returns the native-coin balance and, for any ERC-20 contract addresses you pass, the symbol, decimals, raw and human-formatted balance — fetched in one multicall. For wallet dashboards, treasury checks, and agent payment/settlement flows.

2s profile

  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/btc-address · 1 observation
Bitcoin address summary (free/keyless): confirmed balance (sats + BTC), total received/sent, transaction count, funded/spent output counts, and pending mempool balance + tx count. Works for any BTC address (legacy, SegWit, Taproot). Net-new — our on-chain reads were EVM-only.

2s profile

  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/btc-mempool · 3 observations
Bitcoin mempool state (free/keyless): current unconfirmed tx count, total vsize, and total fees, plus the most recent transactions (whale radar) — filter with minBtc to surface only large pending transfers. For congestion monitoring and large-transfer alerts.

2s profile

  • Solana · exact
    $0.0036 (USDC)
    Recipient TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn
    Coinbase CDP · seen
    Coinbase CDP reports 1 calls and 1 unique payers in 30 days. Last call .
  • Base · exact
    $0.0036 (USDC)
    Recipient 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
    Coinbase CDP · seen
  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/btc-tx · 1 observation
Bitcoin transaction lookup by txid (free/keyless): confirmed status + confirmation count (vs current tip), block height + time, fee (sats + BTC), total output value, size/weight, and input/output counts. Distinct from crypto.tx (EVM) — this is Bitcoin.

2s profile

  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/btc-utxos · 1 observation
Unspent transaction outputs (UTXOs) for a Bitcoin address (free/keyless): each with txid, output index, value (sats + BTC), confirmation status, and block height. Sorted largest-first. For coin selection, balance verification, and wallet tooling.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/cex-klines · 1 observation
Centralized-exchange OHLCV candlesticks for a spot trading pair (e.g. BTC-USD, ETH-USD, SOL-USD), free/keyless. Pass interval (1m/5m/15m/1h/6h/1d) and limit. Each bar: time, open, high, low, close, volume. Net-new vs crypto.dex-ohlcv (on-chain DEX) — this is CEX spot.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/cex-ticker · 1 observation
Centralized-exchange 24h ticker for a spot pair (e.g. BTC-USD), free/keyless: current price, best bid/ask, 24h open/high/low, 24h + 30d volume, and 24h percent change. Real CEX spot quote — distinct from crypto.token-price (CoinGecko aggregate).

2s profile

  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/chain-tvl-history · 1 observation
Historical total DeFi TVL time series for a blockchain (e.g. Ethereum, Solana, Arbitrum), via DefiLlama (free/keyless). Returns daily { date, tvlUsd } points (most recent N, default 90). For charting a chain's DeFi capital over time. Pair with crypto.defi-chains for the current cross-chain leaderboard.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/coin · 1 observation
Full coin profile by CoinGecko id (e.g. bitcoin, ethereum, solana). Returns price, market cap + rank, FDV, 24h volume, all-time high/low with dates, circulating/total/max supply, price changes (1h/24h/7d/30d/1y), categories, and official links (homepage, X, GitHub, subreddit). Richer than crypto.token-price (spot only) and crypto.markets (list row).

2s profile

  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/coin-history · 1 observation
Historical market chart for a coin by CoinGecko id: time-series of price, market cap, and volume over the last N days (1-365) in USD or another vs-currency. Granularity is auto-selected by range (hourly for short windows, daily for long). For backtests, charts, and trend analysis.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/contract · 1 observation
Decode an EVM smart contract. Pass chain (ethereum, base, polygon, arbitrum, optimism, bsc, avalanche) + address; returns whether the contract is source-verified (Sourcify), its name/compiler/language, whether it is a proxy and its implementation address, and human-readable function and event signatures from the ABI. Optionally pass selector (a 0x 4-byte function selector) to decode what it calls — resolved from the contract's own ABI when verified, otherwise from the public 4byte directory. Pai

2s profile

  • Base · exact
    $0.0045 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/defi · 1 observation
DeFi total-value-locked (TVL) metrics via DefiLlama. With no params, returns the top protocols by TVL (name, slug, category, TVL, 1-day and 7-day % change, chains) plus total DeFi TVL across all chains. Pass protocol=<slug> (e.g. lido, aave, uniswap) for a single protocol's TVL, category, momentum, and chains; or chain=<name> (e.g. ethereum, solana, arbitrum) for that chain's TVL. Distinct from crypto.markets/token-price (spot prices) — this is protocol- and chain-level capital locked in DeFi, w

2s profile

  • Base · exact
    $0.0018 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/defi-chains · 1 observation
DeFi TVL leaderboard across all chains (via DefiLlama, free/keyless): every chain ranked by total value locked, with its native token symbol and chain id. Distinct from crypto.defi (which returns one chain's TVL by name) — this is the full ranked cross-chain comparison.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/defi-fees · 1 observation
Protocol fees/revenue or DEX trading volume leaderboards (via DefiLlama, free/keyless). kind=fees ranks protocols by fees generated; kind=dexs ranks DEXes by trading volume. Each row has 24h/7d/30d/1y totals + 1-month change, plus catalog totals. Sort by total24h/7d/30d. The protocol-economics layer.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/defi-protocol-history · 1 observation
Historical total-value-locked (TVL) time series for a DeFi protocol by slug (e.g. aave, lido, uniswap), via DefiLlama (free/keyless). Returns daily { date, tvlUsd } points (most recent N, default 90) plus the protocol's chains. For charting a protocol's growth or decline over time. Net-new vs crypto.defi (current TVL only).

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/defi-yields · 1 observation
DeFi yield & lending rates across protocols (via DefiLlama, free/keyless). Returns pools ranked by APY or TVL with base vs reward APY, TVL, 1d/7d/30d APY trend, stablecoin flag, and IL-risk. Filter by chain, project (aave, compound, lido…), symbol (USDC, ETH…), minApy, minTvlUsd. The yield/lending-rate layer beyond crypto.defi's TVL headline.

2s profile

  • Base · exact
    $0.0036 (USDC)
    agentic.market · seen
GET https://2s.io/api/crypto/dex-networks · 1 observation
List the 100+ blockchain networks supported by the on-chain DEX endpoints (via GeckoTerminal, free/keyless). Each entry has the network slug to use with crypto.dex-pools / dex-ohlcv / dex-search / token-info, its display name, and CoinGecko asset-platform id. Call this to discover valid network slugs.

2s profile

  • Base · exact
    $0.0014 (USDC)
    agentic.market · seen

Counts describe directory coverage, including testnets. Each resource groups the same URL, HTTP method or MCP tool across sources. A catalog sighting records published terms. A live 402 records the endpoint’s reply to an unpaid request.