Base

FLINTTECH x402 REST usage

FLINTTECH premium content: a short welcome message for paying agents. No input needed; returns JSON.

flinttech-x402.onrender.com Dev & Code 1 calls / 30d checked 2026-11-01

0.01 USDC per call per call

Base Token Check x402 REST usage

Base mainnet token facts: name, symbol, decimals, totalSupply, contract/EIP-1967 proxy status, owner(), and mint/pause/blacklist selectors in bytecode. Facts only, no ratings.

base-token-check.vercel.app Data & Finance 1 calls / 30d checked 2026-11-03

0.01 USDC per call per call

chainread x402 REST usage

Read-only Base and Ethereum chain data over x402: gas, blocks, balances, token metadata, tx status, nonces, and token safety verdicts scored 0-100. Batch up to 25 tokens. Free /scan and /t/<address> verdict pages.

api.firstmention.uk Crypto & Payments 1 calls / 30d checked 2026-11-04

0.01 USDC per call per call

Launches x402 REST usage

Latest new token launches on Base, up to 20, each with our automated contract-risk check at request time (Sourcify verification, upgradeable proxy, owner type, mint/pause/blacklist/fee selectors; B20 native tokens are la...

automaton-tx-explainer.vercel.app Data & Finance 1 calls / 30d checked 2026-11-04

0.01 USDC per call per call

DAO Proposal Preview x402 REST usage

DAO Proposal Preview: decoded targets, proposal state, votes and timelock delay for one OpenZeppelin Governor proposal on Ethereum or Base. Check this first. Returns: a DAO proposal preview on one OpenZeppelin Governor p...

api.arysphere.com Dev & Code 5 calls / 30d checked 2026-11-04

0.002 USDC per call per call

Base block number x402 REST usage

Get the latest Base block height as a decimal block number. No argument. $0.005 USDC. Included in the hour pass. Includes a signed Base fact you can check with the published receipt key. Includes a signed Ed25519 receipt...

aizamon.com Crypto & Payments 2 calls / 30d checked 2026-11-04

0.005 USDC per call per call

Base chain id x402 REST usage

Get the Base chain id, 8453. One call confirms the network. $0.005 USDC. Included in the hour pass. Includes a signed Base fact you can check with the published receipt key. Includes a signed Ed25519 receipt you can chec...

aizamon.com Crypto & Payments 2 calls / 30d checked 2026-11-04

0.005 USDC per call per call

Base gas price x402 REST usage

Get the Base gas price and the latest base fee, in wei and gwei. Both figures come back on the same call. $0.005 USDC. Included in the hour pass. Includes a signed Base fact you can check with the published receipt key....

aizamon.com Crypto & Payments 2 calls / 30d checked 2026-11-04

0.005 USDC per call per call

walletprofile x402 REST usage

Base wallet activity profile + heuristic risk score + exact-address OFAC SDN sanctions screen (US Treasury list, public data). /profile and /sanctions. Free /sample.

api.firstmention.uk Crypto & Payments 1 calls / 30d checked 2026-11-04

0.01 USDC per call per call

Base Token Safety/Rug Check x402 REST usage

Check a Base token before your agent buys it, via Liquid Logic X: send an ERC-20 address, get risk (low/medium/high), score, flags and evidence: owner, upgradeable proxy, mint/blacklist/fee/pause powers in code, owner an...

audit.liquidlogicx.com Data & Finance 1 calls / 30d checked 2026-11-04

0.01 USDC per call per call

Base x402 REST usage

Base DeFi overview: TVL trend, top protocols, stablecoins, DEX volume, fees — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Search & Research 1 calls / 30d checked 2026-11-01

0.01 USDC per call per call

Chain Total Supply x402 REST usage

ERC-20 total supply on Base, raw + formatted with decimals and symbol. Use when an agent needs a token's circulating-supply base for market-cap or dilution math.

x402-data-api.sigrunner.workers.dev Data & Finance 5 calls / 30d checked 2026-11-04

0.002 USDC per call per call

Chain Nonce x402 REST usage

Transaction count (nonce) for a Base address, latest and pending. Use when an agent needs the next nonce for a Base address before signing a transaction.

x402-data-api.sigrunner.workers.dev Geo & Maps 5 calls / 30d checked 2026-11-04

0.002 USDC per call per call

Chain Code x402 REST usage

Contract-code check for a Base mainnet address (is_contract + code size + EIP-7702 delegated-EOA detection). Use when an agent must check whether a Base address is a contract or an EOA before interacting.

x402-data-api.sigrunner.workers.dev Dev & Code 5 calls / 30d checked 2026-11-04

0.002 USDC per call per call

Base Token Approval Check x402 REST usage

Check a Base wallet's ERC-20 approvals: allowances for 8 major tokens (USDC, WETH, USDbC, DAI...) to common spenders (Permit2, Uniswap Universal Router, Uniswap SwapRouter02, Aerodrome Router...); flags unlimited approva...

automaton-tx-explainer.vercel.app Crypto & Payments 2 calls / 30d checked 2026-11-04

0.005 USDC per call per call

B20 feature id x402 REST usage

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.

agent402.tools Crypto & Payments 10 calls / 30d checked 2026-11-04

0.001 USDC per call per call

Base Token Verdict x402 REST usage

Base token verdict for trading agents: risk level, score and flags (proxy, mint, pause, blacklist, owner, DEX liquidity on Uniswap v2/v3 and Aerodrome), each with the on-chain fact behind it. Facts and heuristics, not fi...

base-facts.yankii.fr Data & Finance 1 calls / 30d checked 2026-11-03

0.01 USDC per call per call

AllTheBot Wallet address profile x402 REST usage

Wallet profile and address intelligence on Base and Ethereum in one call: wallet or contract, ETH and USDC balances, transaction count, verified ENS / Basename, where it is active. Give an address or an ENS name. No API...

api.zkrobotics.fr Crypto & Payments 2 calls / 30d checked 2026-11-04

0.005 USDC per call per call

AllTheBot Base swap quote x402 REST usage

Swap quote and best DEX price on Base: live quotes from Uniswap v3 (all fee tiers) and Aerodrome (stable/volatile) for any ERC-20 pair, ranked best first, with a low-liquidity flag. ETH, USDC, cbBTC, DAI or any token add...

api.zkrobotics.fr Crypto & Payments 4 calls / 30d checked 2026-11-04

0.0025 USDC per call per call

Gas Price x402 REST usage

Get current gas price information (base fee, priority fee suggestion, gas price)

base-facts.yankii.fr Other services 10 calls / 30d checked 2026-11-04

0.001 USDC per call per call

Datakoot Base Intel x402 REST usage

Datakoot Base Intel: Look up a Base transaction by hash and report whether it is pending, succeeded, or failed, with from, to, value, block number, and gas used. $0.01 USDC per call, charged only on success.

x402.datakoot.com Crypto & Payments 1 calls / 30d checked 2026-11-04

0.01 USDC per call per call

Base / radix convert x402 REST usage

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

agent402.tools Other services 10 calls / 30d checked 2026-11-04

0.001 USDC per call per call

Omnia Odds x402 REST usage

AI-model probability estimate for a yes/no question that resolves by a date: probability, rationale, drivers and what to watch, anchored on live prediction-market prices when they exist. Not a calibrated or track-recorde...

odds.rjhsignaltech.workers.dev Search & Research 1 calls / 30d checked 2026-10-29

0.01 USDC per call per call

onchain-wallet-balances x402 REST usage

Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base). On Base pass token symbols or 0x addresses (or a default common set); on oth...

webtools402.176-109-107-191.sslip.io Data & Finance 2 calls / 30d checked 2026-11-04

0.005 USDC per call per call