MARKET MONITOR / CATALOGUE Services 117,253 MCP listed 40,082 x402 77,234 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-27 · 3 sources
Task

Rpc

92 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.

HubVibe x402 REST usage

Full website audit in one call: accessibility (WCAG 2.1 A/AA via axe-core), on-page SEO, HTTP security headers and page speed / page weight, from a single browser load of one URL. Cheaper than four separate calls; if any...

hubvibe-io.com Security 581 calls / 30d checked 2026-10-27
0.15 USDC per call per call

AiSpace Venice x402 REST usage

Text-to-image generation on Venice models (Flux, SD3.5, GPT-Image, HunyuanImage, and more), paid per request in USDC on Base via x402, no API key. Charge is catalog unit × variants (1–4). A bare unpaid probe (no model) q...

x402.aispace.bot Media & Creative 43 calls / 30d checked 2026-10-27
0.015 USDC per call per call

Toolsmith x402 REST usage

Keyless web search for agents: pass a query, get a concise web-grounded answer plus the top source results (title, URL, snippet). Live web access, no API key or account needed. JSON response. $0.008 USDC per call, pay vi...

toolsmith-api.dassad10.workers.dev Search & Research 74 calls / 30d checked 2026-10-27
0.008 USDC per call per call

NodeFlare x402 REST usage

Base RPC (chain 8453): JSON-RPC over HTTPS on NodeFlare's own bare-metal nodes. Pay per request in USDC, no account or API key - built for AI agents. All methods including eth_getLogs, eth_call, trace, and debug (archive...

rpc.nodeflare.app Crypto & Payments 178 calls / 30d checked 2026-10-27
0.001 USDC per call per call

Phoenix Zero L2 Health Oracle x402 REST usage

Real-time L2 sequencer health across 12 chains (Base, Arbitrum, Optimism, zkSync, Blast, Linea, Mantle, Mode, Scroll, Taiko, Polygon zkEVM, Casper). Returns kernel-level P99/P95 RTT from eBPF probes, revert ratios (Base...

rtt.phoenix-ai.work Other services 9 calls / 30d checked 2026-10-27
0.01 USDC per call per call

base-rpc-health-map x402 REST usage

Which Base public RPCs serve a stale chain tip. Every 30s we ask all major public RPCs for eth_blockNumber in parallel and record how many blocks behind the fastest peer each was, plus latency and error rate. An RPC neve...

x402.dailyelo.com Geo & Maps 7 calls / 30d checked 2026-10-27
0.01 USDC per call per call

Phoenix Zero Safe Check x402 REST usage

Boolean pre-flight check for L2 transaction safety across all 12 chains (?chain= param, default: base). Returns safe=true/false with reason code. Revert ratio data available for Base and Arbitrum only (eth_getBlockReceip...

rtt.phoenix-ai.work Dev & Code 7 calls / 30d checked 2026-10-27
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 6 calls / 30d checked 2026-10-27
0.01 USDC per call per call

x402 Multi-Chain RPC x402 REST usage

Safelisted read-only JSON-RPC proxy across major EVM chains (base, ethereum, polygon, arbitrum, optimism) — eth_call, eth_getBalance, eth_getTransactionReceipt, eth_getBlockByNumber, and more

x402tap.com Crypto & Payments 6 calls / 30d checked 2026-10-27
0.01 USDC per call per call

code402 Chain Data x402 REST usage

Latest Ethereum block height

verify.code402.dev Crypto & Payments 7 calls / 30d checked 2026-10-27
0.005 USDC per call per call

chainquery Bitcoin RPC x402 REST usage

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Currently banned peer IPs and subnets from chainquery's independent full node. Bitcoin Core listbanned.

x402.chainquery.com Databases & Storage 7 calls / 30d checked 2026-10-27
0.005 USDC per call per call

Multi-chain EVM RPC (read-only) x402 REST usage

Read-only JSON-RPC against Ethereum, Base, Polygon, Arbitrum, or Optimism with built-in multi-endpoint failover - one paid call, no node or API key of your own. Prefer the named reads (block-number, chain-info, block-inf...

agent402.tools Crypto & Payments 8 calls / 30d checked 2026-10-27
0.004 USDC per call per call

x402 Multi-Chain RPC x402 REST usage

Safelisted read-only JSON-RPC proxy across major EVM chains (base, ethereum, polygon, arbitrum, optimism) — eth_call, eth_getBalance, eth_getTransactionReceipt, eth_getBlockByNumber, and more

agentx402pay.com Crypto & Payments 3 calls / 30d checked 2026-10-27
0.01 USDC per call per call

Toolsmith x402 REST usage

Foreign exchange reference rates from the European Central Bank. Base currency plus optional symbols filter. Updated daily on ECB schedule. JSON response. $0.002 USDC per call, pay via x402, no API key.

toolcall.click Crypto & Payments 15 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Multichain RPC/nft x402 REST usage

NFT metadata for ERC-721 and ERC-1155 tokens on Base, Polygon, Arbitrum, Optimism and Ethereum. Resolves tokenURI through IPFS, Arweave, data: URIs and public HTTPS, and returns the parsed metadata JSON.

multichain-rpc.clankerceo.workers.dev Crypto & Payments 7 calls / 30d checked 2026-10-27
0.004 USDC per call per call

Multichain RPC/balance x402 REST usage

Native coin and ERC-20 token balance for any wallet address on Base, Polygon, Arbitrum, Optimism or Ethereum. Returns raw and human-decimal amounts in one call.

multichain-rpc.clankerceo.workers.dev Crypto & Payments 12 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Read-only JSON-RPC passthrough x402 REST usage

Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-only whitelist (eth_call, eth_getLogs, eth_getBlockByNumber, eth_getTransactionReceipt, eth_chainId, e...

agent402.tools Data & Finance 8 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Public RPC endpoints any chain x402 REST usage

Keyless public RPC endpoints (HTTPS and WebSocket) of any EVM chain by name or chainId, with block explorers, native currency and website. Lets an agent connect to any chain.

api.vextorium.com Other services 5 calls / 30d checked 2026-10-27
0.003 USDC per call per call

ENS Resolver x402 REST usage

Resolve ENS in either direction on Ethereum: an ENS name (vitalik.eth) → its 0x address, or a 0x address → its primary ENS name (plus avatar when set). The identity read wallet, payment, and UX agents make to verify who...

store.agentexchange.work Crypto & Payments 3 calls / 30d checked 2026-10-27
0.005 USDC per call per call

Ethereum x402 REST usage

Receipt Check: status, gas used, logs by tx hash on Ethereum mainnet. Ethereum mainnet transaction receipt via eth_getTransactionReceipt. Takes query parameter hash (transaction hash, 0x + 64 hex). Returns the node's rec...

api.arysphere.com Crypto & Payments 7 calls / 30d checked 2026-10-25
0.002 USDC per call per call

x402check-base x402 REST usage

Read-only Base mainnet data: GET /base/block, /base/tx?hash=, /base/balance?address=, /base/erc20?token=&holder=, /base/gas. Small JSON payloads over a Base node; pay ~$0.002 USDC on Base per call.

x402check.arden-instance.workers.dev Crypto & Payments 7 calls / 30d checked 2026-10-27
0.002 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 13 calls / 30d checked 2026-10-27
0.001 USDC per call per call

Evm address summary x402 REST usage

Everything cheap that is knowable about an address, in one call — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Geo & Maps 2 calls / 30d checked 2026-10-26
0.006 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 4 calls / 30d checked 2026-10-27
0.003 USDC per call per call

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