Base

basefeed x402 REST usage

x402 settlement test

api.basefeed.io Crypto & Payments 5 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Base x402 REST usage

Base network gas fee statistics (1-minute baseFeePerGas buckets): p25/p50/p90/p99 and the current value's percentile rank within the window. Descriptive statistics only; not investment advice.

api.agentfeeds.jp Data & Finance 2 calls / 30d checked 2026-10-26

0.002 USDC per call per call

EVM Transaction Status x402 REST usage

Status of an EVM transaction by hash: pending, success or failed, block, confirmations, timestamp, from/to, value, gas used, fee (plus L1 fee on Base/Optimism) and ERC-20 token transfers. Searches Ethereum, Base, Arbitru...

bess-x402.onrender.com Crypto & Payments 2 calls / 30d checked 2026-10-26

0.002 USDC per call per call

USDC Payment Verifier x402 REST usage

Verify a USDC payment on Base: tx succeeded, USDC sent to the expected recipient (and from the expected sender), at least min_amount, enough confirmations. Returns verdict + decoded transfers. Unknown tx = not charged.

gogeta2-u35175.vm.elestio.app Crypto & Payments 2 calls / 30d checked 2026-10-26

0.002 USDC per call per call

USDC Balance on Base x402 REST usage

Current USDC balance of an address on Base or Base Sepolia (balanceOf on the official Circle contract).

gogeta2-u35175.vm.elestio.app Crypto & Payments 4 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Klima Retirement Aggregator x402 REST usage

Live snapshot of the most liquid carbon credits retirable on Base: the top 3 Klima Protocol carbon classes and the top 3 Carbonmark marketplace listings, with USDC-per-tonne prices and tonnes available. Additionally, the...

x402-retire-git-feat-paid-indexing-gate-and-openapi-carbonmark.vercel.app Databases & Storage 4 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Gas x402 REST usage

Current gas conditions on Base, read live from a public node: gas price, base fee of the latest block, suggested priority fee, latest block number and timestamp. No parameters. No third-party API, no cache.

oraclepost.higgsfield.app Data & Finance 4 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Quartermaster Basename Resolver x402 REST usage

Resolve Basenames (.base.eth) to wallet addresses on Base.

quartermaster.surewhynot.app Crypto & Payments 4 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Quartermaster Address Type x402 REST usage

Determine whether a Base address is a contract or an externally-owned account.

quartermaster.surewhynot.app Geo & Maps 4 calls / 30d checked 2026-10-26

0.001 USDC per call per call

x402 Base Tools x402 REST usage

Check whether a Base transaction settled x402 payments (USDC transferWithAuthorization, EIP-3009): for each, the payer, the payTo address, the amount in USDC, the authorization nonce, the facilitator that sent it, and th...

base.kagurazaka.dev Crypto & Payments 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Transaction Info x402 REST usage

Get transaction status, fee, and decoded ERC20 Transfer events

base-facts.yankii.fr Crypto & Payments 1 calls / 30d checked 2026-10-26

0.003 USDC per call per call

base-chain-balance x402 REST usage

Native ETH balance for one Base network address, read live from a public Base RPC node (eth_getBalance) and returned with the snapshot block it was read at.

market.561.group Crypto & Payments 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Tanod chainpeek x402 REST usage

UTC time and latest Base block. Use when you need a clock.

tanod.dev Crypto & Payments 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

MNEMOS by ScriptMasterLabs x402 REST usage

MNEMOS current cached options and anomaly intelligence

mnemos-agent.onrender.com Crypto & Payments 1 calls / 30d checked 2026-10-26

0.003 USDC per call per call

P0 x402 Market Index x402 REST usage

Use when an agent needs x402 market totals. Returns catalogue size and 30-day totals: services, calls, unique paying wallets, with the snapshot hash

x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev Crypto & Payments 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Multichain RPC/gas x402 REST usage

Live gas prices: EIP-1559 base fee plus low/medium/high priority tiers in gwei, and the estimated cost of a simple transfer.

multichain-rpc.clankerceo.workers.dev Other services 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Quartermaster Token Info x402 REST usage

ERC-20 name, symbol, decimals, and total supply for a token on Base.

quartermaster.surewhynot.app Data & Finance 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Gas Price x402 REST usage

Current gas conditions on Base. POST {} and receive the legacy gas price and the EIP-1559 base fee of the latest block, in wei and gwei. Useful for agents deciding whether to transact now or wait.

x402-echo-service.onrender.com Data & Finance 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

ContextSlim x402 REST usage

[MCP: optimize_context] Pay-per-call JSON context pruning & LLM token budget enforcement. Saves up to 85% prompt tokens.

contextslim.friczero.com AI Models & Inference 3 calls / 30d checked 2026-10-26

0.001 USDC per call per call

EVM Nonce Gap Check x402 REST usage

EVM Nonce Gap Check: calculates the gap between pending and proposed transaction nonces using only bounded caller-supplied values. Call when you need a bounded evm nonce gap check result before signing, submitting, repla...

api.delx.ai Crypto & Payments 2 calls / 30d checked 2026-10-26

0.001 USDC per call per call

PennyAPI x402 Seller Preflight x402 REST usage

Preflight an unfamiliar x402 paid API before spending. Validate the live 402 payment challenge, network, USDC asset, amount, payTo recipient, TLS, redirects, manifest presence, latency, and provenance. Returns determinis...

pennyregwatch.com Crypto & Payments 2 calls / 30d checked 2026-10-26

0.001 USDC per call per call

AUN x402 REST usage

Base Transaction Lookup: status, from/to, value, fee, block and decoded ERC-20 transfers of a Base mainnet transaction. $0.002 per call.

a-upgradenet.com Crypto & Payments 1 calls / 30d checked 2026-10-26

0.002 USDC per call per call

VerifyOracle x402 REST usage

Live Base Mainnet (chainId 8453) gas price and EIP-1559 baseFeePerGas directly from Base public RPC.

penger-oracle.run402.com Other services 2 calls / 30d checked 2026-10-26

0.001 USDC per call per call

QuickBuild x402 REST usage

Drop-in OpenAI Embeddings endpoint: POST {input: string | string[], model, encoding_format: float|base64, dimensions} and get {object: "list", data: [{embedding, index}], model, usage}. Models (Cloudflare Workers AI): bg...

quickbuild.quynguyenbac.workers.dev Databases & Storage 2 calls / 30d checked 2026-10-26

0.001 USDC per call per call