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MARKET MONITOR / CATALOGUE Services 99,236 MCP listed 39,685 x402 59,598 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-26 · 3 sources
Task

Approval

24 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.

Request a Human x402 REST usage

Ask a real person for a short written answer where human judgment matters: an opinion, a moral or social call, taste, or native-speaker intuition. Send 'question' (and optional 'context'); a human answers within 24 h. Ad...

agents.requestahuman.com Search & Research 1 calls / 30d checked 2026-10-26
3 USDC per call per call

Sign Guard x402 REST usage

The check before the riskiest moment — signing. Decodes raw unsigned calldata (approve / permit / transfer / setApprovalForAll), shows the exact intent (who gets power over what, and whether it's UNLIMITED), and screens...

402.com.tr Dev & Code 6 calls / 30d checked 2026-10-26
0.06 USDC per call per call

Agent Wallet Audit x402 REST usage

🆕 The complete fund-movement authority on a Base wallet in one call: ERC-20 approvals (a spender you approved can pull the token) PLUS Base Account spend permissions (the agent-era scoped recurring allowance) — one drai...

402.com.tr Crypto & Payments 5 calls / 30d checked 2026-10-26
0.06 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

TxSim Decoder x402 REST usage

Decode raw EVM calldata into a named function, signature and arguments, plus security risk flags (unlimited token approval, setApprovalForAll, ownership transfer, unknown selector, native value transfer). Keyless, determ...

simulate.cyberwarex.com Dev & Code 50 calls / 30d checked 2026-10-26
0.002 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

Base Payee Safety x402 REST usage

Check a Base address before an agent pays or approves it. Input: one address. Output: allow or warn. Reports wallet or contract, whether the wallet has sent a transaction, whether a contract already had code 7 days ago,...

base-token-check.fly.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 22 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

DYOE Policy Authorization x402 REST usage

Approve or deny an agent action instantly against a human-set policy — no waiting. Returns a signed decision receipt; anything over the policy line escalates to a human. Input: ?action=&counterparty=&amount= (counterpart...

agents.dyoeway.org Other services 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

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

Erc721 approved x402 REST usage

Which address is approved to move one NFT — Genesis402 / UnyKorn Operator Network

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

ERC20 allowance x402 REST

ERC20 allowance on Ethereum, Base, Arc or BNB Chain: how much a spender may move from an owner, raw and in token units, and whether the approval is effectively unlimited. Pass ?token=&owner=&spender=&chain=

apexfaucet.xyz Crypto & Payments checked 2026-10-26
0.001 USDC per call per call

Base ERC-20 Allowance Checker x402 REST

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

x402-data-api.sigrunner.workers.dev Crypto & Payments checked 2026-10-26
0.002 USDC per call per call

txsafety-raw x402 REST

Pre-sign safety verdict for a raw EVM transaction. Decodes the calldata against a known-signature registry, shows known-pattern effects (approval delta, transfer target), dry-runs eth_call for revert, checks scam-blockli...

payai.agentstools.dev Security checked 2026-10-26
0.02 USDC per call per call

approvals-wallet x402 REST

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...

payai.agentstools.dev Crypto & Payments checked 2026-10-26
0.02 USDC per call per call

approvals-nft x402 REST

Standing-state audit of a wallet's live NFT operator approvals. Indexes every ApprovalForAll the address granted, filters to operators still live on-chain via isApprovedForAll, flags scam-listed, stale and canonical oper...

payai.agentstools.dev Crypto & Payments checked 2026-10-26
0.01 USDC per call per call

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