MARKET MONITOR / CATALOGUE Services 142,555 MCP listed 42,287 x402 100,381 Rails Base / Solana / Polygon / Arbitrum Imported 2026-11-04 · 3 sources
Task

Onchain

281 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.

Address Nonce x402 REST usage

🆕 The next nonce for any Base address, plus its ETH balance and whether it is a contract. The count means different things either side of that line — transactions sent for a wallet, contracts deployed for a contract — s...

402.com.tr Geo & Maps 9 calls / 30d checked 2026-11-04
0.002 USDC per call per call

Quartermaster Transaction Status x402 REST usage

Check the status of a Base transaction: success/reverted/pending, confirmations, gas used, and explorer link — settlement verification for agents and payment flows.

quartermaster.surewhynot.app Crypto & Payments 9 calls / 30d checked 2026-11-04
0.002 USDC per call per call

a-un x402 REST usage

Base Latest Block: current Base mainnet block number, timestamp, base fee and gas used. $0.001 per call.

a-upgradenet.com Crypto & Payments 17 calls / 30d checked 2026-11-04
0.001 USDC per call per call

Chain Storage AT x402 REST usage

Raw storage slot (eth_getStorageAt) of a Base contract. Use when an agent needs proxy implementation/admin slots or raw contract state.

x402-data-api.sigrunner.workers.dev Search & Research 8 calls / 30d checked 2026-11-04
0.002 USDC per call per call

Chain Block Number x402 REST usage

Current Base mainnet block number. Use when an agent needs the latest Base block to time or sanity-check a transaction.

x402-data-api.sigrunner.workers.dev Data & Finance 8 calls / 30d checked 2026-11-04
0.002 USDC per call per call

AveDaris Agent Utilities x402 REST usage

Check a UUID: send a string and get whether it is a valid UUID plus its version and variant. $0.001 USDC per call on Base.

api.avedaris.com Crypto & Payments 16 calls / 30d checked 2026-11-04
0.001 USDC per call per call

Latest Block Number x402 REST usage

The current chain tip (latest block height) via eth_blockNumber, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The freshness read settlement, indexing and trading agents poll to know where the chain is. Liv...

store.agentexchange.work Crypto & Payments 16 calls / 30d checked 2026-11-04
0.001 USDC per call per call

x402 Agent Hub x402 MCP usage

Token verdict / rug check: an A-F safety grade, a one-line verdict and a plain-language take on any token on Base, Ethereum, BSC, Arbitrum, Optimism, Polygon, Avalanche or Solana, with a shareable page and card image. Bu...

x402-agent-hub.x402-agent-hub.workers.dev Crypto & Payments 1 calls / 30d checked 2026-11-04
0.015 USDC per call per call

Chain Wallet x402 REST usage

Wallet screening bundle (balance, activity, contract vs EOA check): ETH balance + balance_usd + tx count + contract-code check (EIP-7702 delegated-EOA aware) for a Base mainnet address, in one call.

x402-data-api.sigrunner.workers.dev Crypto & Payments 5 calls / 30d checked 2026-11-04
0.003 USDC per call per call

Base wallet balances x402 REST usage

Base wallet balances. Base only (all 5 chains: wallet_balances; USD values: wallet_portfolio). An address on Base: ETH and major token balances (USDC, WETH, cbBTC, DAI, USDbC, cbETH, AERO, EURC) plus up to 20 token addre...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 3 calls / 30d checked 2026-11-04
0.005 USDC per call per call

Ethereum Address Inspector x402 REST usage

Use when: what is this Ethereum address (wallet, contract, proxy, token)? Inspect any Ethereum address: EOA vs contract vs EIP-7702 delegated, ETH balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name...

automaton-tx-explainer.vercel.app Crypto & Payments 3 calls / 30d checked 2026-11-04
0.005 USDC per call per call

Ethereum Token Approval Check x402 REST usage

Use when: which token approvals on this Ethereum wallet should I revoke? Check a Ethereum wallet's ERC-20 approvals: allowances for 8 major tokens (USDC, USDT, WETH, DAI...) to common spenders (Permit2, Uniswap Universal...

automaton-tx-explainer.vercel.app Crypto & Payments 3 calls / 30d checked 2026-11-04
0.005 USDC per call per call

EVM Block x402 REST usage

Fetch a block header by number, hash, or "latest" on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain: timestamp, miner, gas used/limit, base fee, transaction count, size. Public JSON-RPC, no API keys. POST a JS...

keyronne.com Crypto & Payments 5 calls / 30d checked 2026-11-04
0.003 USDC per call per call

Chain IS Contract x402 REST usage

Is a Base address a smart contract or an EOA? Returns is_contract and bytecode size. Use when an agent must decide whether a recipient is a contract before sending funds or approving it.

x402-data-api.sigrunner.workers.dev Crypto & Payments 7 calls / 30d checked 2026-11-04
0.002 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 7 calls / 30d checked 2026-11-04
0.002 USDC per call per call

Text Tools API x402 REST usage

Wandelt CSV in JSON oder JSON in CSV um, ohne KI (Convert CSV to JSON or JSON to CSV, deterministic).

2-28-111-166.sslip.io Productivity & Docs 7 calls / 30d checked 2026-11-04
0.002 USDC per call per call

EVM Block by Height or Hash x402 REST usage

Retrieve a live EVM block header and a bounded list of real transaction hashes by height, tag, or block hash.

ai-data-marketplace-1042299154756.us-central1.run.app Data & Finance 7 calls / 30d checked 2026-11-04
0.002 USDC per call per call

ManyLives Onchain x402 REST usage

Live balances of a Base wallet: native ETH and US-dollar stablecoin, plus its transaction count.

api.manylives.me Crypto & Payments 6 calls / 30d checked 2026-11-02
0.002 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 12 calls / 30d checked 2026-11-04
0.001 USDC per call per call

Live EVM Block Number x402 REST usage

Read the current block height directly from a supported Base, Ethereum, or Arbitrum public JSON-RPC provider.

ai-data-marketplace-1042299154756.us-central1.run.app Crypto & Payments 11 calls / 30d checked 2026-11-04
0.001 USDC per call per call

solcheck x402 REST usage

Decimals, raw and total supply, mint authority and freeze authority for an SPL token mint.

api.firstmention.uk Data & Finance 1 calls / 30d checked 2026-11-04
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

Decode x402 REST usage

Use when: what am I about to sign with this calldata? Decode EVM calldata before signing: function signature candidates (openchain DB), decoded args, and plain-English warnings for approve/setApprovalForAll/permit/unlimi...

automaton-tx-explainer.vercel.app Dev & Code 2 calls / 30d checked 2026-11-04
0.005 USDC per call per call

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