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MARKET MONITOR / CATALOGUE Services 86,883 MCP listed 39,685 x402 47,214 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-26 · 3 sources
Task

Allowance

23 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Spend Permission Auditor x402 REST usage

🆕 Base Account spend permissions let an app or agent spend a scoped, recurring allowance from a wallet — the primitive behind autonomous agent payments on Base. This reconstructs a wallet's ACTIVE spend permissions from...

402.com.tr Crypto & Payments 6 calls / 30d checked 2026-10-26
0.05 USDC per call per call

EVM State Batch x402 REST usage

Read-only EVM state API for wallet snapshots, ERC-20 balances, token allowances, contract code, block heights, and bounded eth_call reads across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed price: $0.05 USDC on...

evmstate.com Crypto & Payments 6 calls / 30d checked 2026-10-26
0.05 USDC per call per call

Approval advisor x402 REST usage

Ranks a wallet's active token approvals by USD-at-risk x unlimited-allowance x unlabelled-spender, and returns a prioritised revoke queue. Approvals are the #1 drain vector; this tells an agent exactly what to revoke fir...

402.com.tr Crypto & Payments 5 calls / 30d checked 2026-10-26
0.05 USDC per call per call

stall-row x402 REST usage

Fetch one web page and return its main content as clean Markdown with title and word count, extracted server-side. Private and loopback targets are refused. Use this when an agent needs to read a page inside a workflow w...

stall-row-production.up.railway.app Web & Scraping 8 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Saylor Innovations On-Chain Data x402 REST usage

Ethereum block by number or latest - hash, time, transaction count, gas used, base fee and miner

saylorinnovations.com Crypto & Payments 8 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Saylor Innovations Guide Library x402 REST usage

CUDA, driver and Ollama compatibility - GPU support, model memory fit and proof inference uses the GPU

saylorinnovations.com AI Models & Inference 7 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Token allowance, Arbitrum ERC-20 x402 REST usage

Token allowance, Arbitrum ERC-20. ERC-20 token allowance on Arbitrum One: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an app...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 3 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Token allowance, Ethereum ERC-20 x402 REST usage

Token allowance, Ethereum ERC-20. ERC-20 token allowance on Ethereum: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approva...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 3 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Token allowance, Optimism ERC-20 x402 REST usage

Token allowance, Optimism ERC-20. ERC-20 token allowance on Optimism: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approva...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 3 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Token allowance, Polygon ERC-20 x402 REST usage

Token allowance, Polygon ERC-20. ERC-20 token allowance on Polygon PoS: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an appro...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 3 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Aether x402 REST usage

Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address

aether-x402.vercel.app Crypto & Payments 21 calls / 30d checked 2026-10-26
0.001 USDC per call per call

approvals-wallet x402 REST usage

Standing-state audit of a wallet's live ERC-20 token approvals. Indexes every approval the address ever granted, filters to those still live on-chain, flags unlimited, stale, scam-listed and canonical spenders, estimates...

api.agentstools.dev Crypto & Payments 1 calls / 30d checked 2026-10-26
0.02 USDC per call per call

ERC-20 allowance (owner to x402 REST usage

How much of an ERC-20 token a spender contract is approved to move from an owner wallet - the approval check an agent runs before a swap, a bridge, or an x402 transferWithAuthorization flow. Returns the allowance as an e...

agent402.tools Crypto & Payments 8 calls / 30d checked 2026-10-26
0.002 USDC per call per call

chain-erc20-allowance x402 REST usage

ERC-20 allowance a wallet has granted a spender, and whether it is unlimited: send "token,owner,spender". Default chain Base; prefix another: ethereum:, arbitrum:, optimism:, polygon:, bsc:. $0.01 per call.

chain.intel.rallylive.ca Crypto & Payments 1 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Chain Allowance x402 REST usage

ERC-20 allowance(owner, spender) on Base, raw + formatted, flags unlimited approvals.

x402-data-api.sigrunner.workers.dev Data & Finance 4 calls / 30d checked 2026-10-26
0.002 USDC per call per call

Token Allowance & Balance x402 REST usage

Pre-flight check before a swap or transfer: ERC-20 allowance, balance, decimals and symbol in one call, read live from the chain at the latest block. Pass an amount and get a straight would_succeed verdict with the block...

api.eucompliance.tools Crypto & Payments 3 calls / 30d checked 2026-10-26
0.002 USDC per call per call

ERC-20 token approval check x402 REST usage

ERC-20 token approval check. Check how much of a wallet's ERC-20 token a spender contract is approved to move on Base: the raw and formatted allowance, the token symbol and decimals, and whether the approval is unlimited...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 3 calls / 30d checked 2026-10-26
0.002 USDC per call per call

AllTheBot ERC-20 allowance x402 REST usage

ERC-20 allowance and token approval check on Base: how much a spender contract is approved to move from an owner wallet, with unlimited-approval detection. Run it before a swap, a bridge or a transferFrom.

api.zkrobotics.fr Crypto & Payments 2 calls / 30d checked 2026-10-26
0.003 USDC per call per call

ERC20 allowance x402 REST usage

How much of a token a spender is still allowed to move on an owner's behalf, and whether that approval is unlimited. The check to run before an approve, and the one that finds forgotten infinite approvals. Via eth_call (...

flat-rate-llm.kikoribera03.workers.dev Crypto & Payments 1 calls / 30d checked 2026-10-26
0.005 USDC per call per call

ERC-20 Allowance x402 REST usage

How much a spender (router, Permit2, protocol) is approved to move from an owner's ERC-20 balance, with an unlimited-approval flag. Use to check approvals before a swap or to audit risky approvals.

bess-x402.onrender.com Security 2 calls / 30d checked 2026-10-26
0.002 USDC per call per call

Erc20 allowance x402 REST usage

How much a spender is approved to move from an owner — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 1 calls / 30d checked 2026-10-26
0.003 USDC per call per call

x402 Spend Cap/Allowance Check x402 REST usage

Check an agent wallet's x402 spend cap before it pays, via Liquid Logic X: send a wallet and optional endpoint URL, get allowed, reason, remainingUsdc, capUsdc, spentUsdc from the published policy. $0.001 USDC on Base.

audit.liquidlogicx.com Crypto & Payments 2 calls / 30d checked 2026-10-26
0.001 USDC per call per call

Quartermaster ERC-20 Allowance x402 REST usage

Check an ERC-20 spending allowance on Base; flags unlimited approvals.

quartermaster.surewhynot.app Crypto & Payments 1 calls / 30d checked 2026-10-26
0.001 USDC per call per call

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