chain.tollkit.dev
https://chain.tollkit.dev/Wallet balance on Base, Ethereum or Solana: give an address, get its ETH or SOL, USDC, USDT and any tokens you list, read live from the chain.
Paid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here A, 70.5/100), which weighs availability, payability and on-chain demand. How the two differ
| Valid payment requirements | 10/10 | Payment requirements carry a payee, a mainnet network and a price. |
| Live 402 challenge | 20/25 | Endpoint reachable; its 402 challenge was seen earlier (112 ms). |
| x402 version | n/a | x402 version not observed yet. |
| Signed descriptor | n/a | No x402 standard defines a signed descriptor. |
| Uptime (30 days) | 15/15 | 32/32 probes succeeded over 30 days (100%). |
| Resource declaration | 10/10 | Declares 12 paid resource(s). |
| Verified identity | 5/10 | Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control. |
| Freshness + modern flags | 5/5 | seen in a source within 7 days; declares x402. |
| Security declaration | n/a | Payment is the access control for an x402 resource. |
Compared with peers
Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.
- Readiness
- Higher than 75% of peers
- This listing 87 · peer median 78
- Latency
- Faster than 82% of peers
- This listing 112 ms · peer median 205 ms
Where it loses the most points, and how to win them back
- Live 402 challenge −5
— Answer the paid path with a valid 402 challenge.
Now: Endpoint reachable; its 402 challenge was seen earlier (112 ms).
- Verified identity −5
— Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Paid endpoints
12 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.
https://chain.tollkit.dev/chain/balance
Wallet balance on Base, Ethereum or Solana: give an address, get its native ETH or SOL plus USDC (and USDT on Ethereum and Solana), and any other tokens you list (up to 20), with symbols and decimals applied. Read live from the chain. $0.002 per call; a bad address or an RPC failure is not charged.
https://chain.tollkit.dev/chain/token
Token info on Base, Ethereum or Solana: give an ERC-20 contract or SPL mint address, get its name, symbol, decimals and total supply (plus mint and freeze authority on Solana), read live from the chain. $0.002 per call; an address that isn't a token is not charged.
https://chain.tollkit.dev/chain/tx
Transaction lookup on Base, Ethereum or Solana: give a tx hash or signature, get its status, time, sender, fee and every token movement it made, with symbols and amounts (ERC-20 transfers; on Solana, SOL and token balance changes). $0.002 per call; a hash that isn't found is not charged.
https://chain.tollkit.dev/chain/price
Token price in USD from on-chain pools, on Base, Ethereum or Solana: give a token, get its current price from its deepest Uniswap v3 pool (Orca Whirlpool on Solana) against USDC or WETH/SOL, with the pool and its depth, and a flag when liquidity is thin. Read live from the chain, not a price API. $0
https://chain.tollkit.dev/chain/check
Token check before you buy, send or accept a token, on Base, Ethereum or Solana: give a token address, get what it is (name, symbol, supply), its USD price and pool depth, and plain warnings read from the chain: thin or no liquidity; on Base and Ethereum who owns the contract and whether it is upgra
https://chain.tollkit.dev/chain/portfolio
Wallet portfolio in USD on Base, Ethereum or Solana: give an address (and any extra tokens), get every holding priced from on-chain pools, its USD value, the wallet's total, and warnings when a position is thin or bigger than the pool behind its price. $0.005 per call; a bad address is not charged.
https://chain.tollkit.dev/chain/pretrade
Check a token before you trade it, in one call, on Base, Ethereum or Solana: give a token address (and optionally your wallet and trade size in USD), get its USD price, pool depth, chain warnings (no pool, thin liquidity, mint or freeze authority), how big your trade is next to the pool, how much of
https://chain.tollkit.dev/chain/news
Crypto news for AI agents: give a coin or topic ("solana", "bitcoin ETF", "stablecoin rules"), get the latest news articles from the past hour, day or week with publisher, date, snippet and link, plus a short AI read of the coverage: its mood (positive, negative, mixed or neutral), a summary and the
https://chain.tollkit.dev/chain/perps
Hyperliquid perpetuals market data for AI agents: give coins ("BTC", "ETH", "kPEPE") or nothing for the top markets, get mark and oracle price, 24h change, the current hourly funding rate and its annualized figure, open interest in coins and USD, 24h volume and max leverage. Sort by volume, open int
https://chain.tollkit.dev/chain/pulse
The crypto market in one call, for AI agents: the Crypto Fear & Greed Index (today, yesterday, a week ago), BTC, ETH and SOL with perp price, 24h change, funding and Chainlink reference price, the highest and lowest funding rates, the biggest 24h gainers and losers, and total open interest and volum
https://chain.tollkit.dev/chain/history
Crypto price history for AI agents: give an asset ("ETH", "BTC", "SOL", "LINK") and a number of days (up to 365), get up to 100 past USD prices read from Chainlink's on-chain price feed on Ethereum, each with its time and round, plus first, last, high, low and percent change. For charts, backtests a
https://chain.tollkit.dev/chain/xpulse
What crypto traders on X are saying right now, for AI agents: give a coin ("SOL", "BONK") or a topic and get the overall mood (bullish, bearish, mixed or quiet), a score from -1 to 1, how many posts were read, up to three short themes and links to the posts it rests on. Read from the last 24 hours w
How to call
curl -sS -i -X GET https://chain.tollkit.dev/ # expect HTTP 402 Payment Required (about $0.001/call)Listed in
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