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Basetoolbox

https://base-spot.monnet-yanis1.workers.dev
● down crypto

Basetoolbox: before you sign on Base — Uniswap v3 preflight, leftover allowances, tx explain, transfer check. $0.10 USDC. Also $0.01 price/gas/ENS. GET /v1/constants free. No CoinGecko key.

Category
crypto
Chains
base, eip155:8453
Price
$0.0100–$0.1000 USDC

Quality grade

How grading works
E 10.0 / 100 capped at D while down
Availability 0.0 / 40
Endpoint did not respond
Payability 10.0 / 20
  • ✗ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 0.0 / 40
0 distinct payers, 0 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 11 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

7 resource(s) advertised by this origin.

https://base-spot.monnet-yanis1.workers.dev/v1/allowances

Leftover Uniswap-family ERC-20 allowances on Base for one token: SwapRouter02, Permit2, Universal Router. Revoke calldata is approve(spender, 0), never max uint. POST {from, token}. $0.10 USDC.

https://base-spot.monnet-yanis1.workers.dev/v1/base-ens

ENS resolve: turn a .eth name into a 0x address (vitalik.eth). On-chain L1 records, no CCIP.

https://base-spot.monnet-yanis1.workers.dev/v1/base-gas

Base network EIP-1559 gas oracle: base fee, priority tips, 21k transfer cost. Use before signing a tx. No oracle key.

https://base-spot.monnet-yanis1.workers.dev/v1/base-price

Live DEX token price in USD on Base. Uniswap v3 USDC pool. Pass ticker WETH/USDC/cbBTC or 0x contract. No CoinGecko key.

https://base-spot.monnet-yanis1.workers.dev/v1/explain

Decode a Base tx before you sign: approve, ERC-20 transfer, or Uniswap v3 exactInputSingle. Unknown calldata → abort. POST {to, data, value}. $0.10 USDC.

https://base-spot.monnet-yanis1.workers.dev/v1/preflight

Before you sign a Uniswap v3 swap on Base: amountOut, minOut, gas, exact-amount approve calldata (never max uint), simulate revert, sell-check. POST {from, tokenIn, tokenOut, amountIn}. $0.10 USDC.

https://base-spot.monnet-yanis1.workers.dev/v1/send-check

Before you send USDC/WETH/ETH on Base: simulate the transfer, reject zero address, flag contract recipients. POST {from, to, token, amountIn}. $0.10 USDC.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -X POST https://base-spot.monnet-yanis1.workers.dev/v1/allowances
/.well-known/x402.json
https://base-spot.monnet-yanis1.workers.dev/.well-known/x402

Listed in

Directories this entry was found in.

submission x402scan