111 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.
Paid chain block number read on Base (cycle 227, x402 $0.01) - GET ?sample=1|2|3 OR POST application/json {}. KEYLESS public Base JSON-RPC with 6-endpoint failover - no key, no account, no signup. Returns the current blo...
Paid Base chain head and gas price (cycle 225, x402 $0.01) - GET ?sample=1|2|3 OR POST application/json {}. KEYLESS public Base JSON-RPC -- no key, no account, no signup. Returns the current block number, the block times...
Live native-asset wallet balance lookup across 6 chains (Bitcoin, Ethereum, Base, Solana, TRON, Ronin) via public RPCs. One call returns the current balance as JSON. No API key, no signup — x402 per-call payment only.
Is TCP port 111 (RPC) open on a host? Attempts a connection from Cloudflare's edge and reports open/closed/filtered with the connect time; Cloudflare-fronted hosts are reported as inconclusive because their edge answers...
Change watch for is port 111 open: runs the check, compares it with the result from your previous call for the same host (kept 90 days) and returns the current answer, changed true/false, the fields that changed with bef...
Bulk is port 111 open: up to 20 hosts in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents...
Decentralised exchange volumes: totals, 24h/7d/30d windows, per-chain and per-protocol breakdowns, all in one payload cached at the edge. For market-structure work and volume share screens.
Contract read on Arc: one view call on any contract, decoded, with block and time. ?address=0x...&fn=function balanceOf(address) view returns (uint256)&args=["0x..."] (args a JSON array, optional; &block=N for a past blo...
Read-only contract call (eth_call) on Ethereum, Base, Arc or BNB Chain: pass ?to=&data= (hex calldata) and optional &from=, get the returned bytes or the revert reason, at a named block. Nothing is signed or sent.
Fetch eth_getLogs results for a chain/address/topic filter, with automatic fallback across multiple public RPC endpoints.
ETH balance of a Base mainnet address, incl. balance_usd.
Curated feed of active, verified cash/crypto coding and agent bounties across GitHub, Frantic, and SwarmMemo.
Curated feed of active, verified cash/crypto coding and agent bounties across GitHub, Frantic, and SwarmMemo.
High-precision network latency benchmark profiler: decomposes microsecond timing for DNS resolution, TCP handshake, TLS 1.3 negotiation, and TTFB roundtrip times for MCP servers and Base RPC endpoints ($0.75 USDC). Input...
Base RPC telemetry & decoded receipt parser: Base gas fees, EIP-3009/ERC-20 decoded logs, calldata selector & tx receipt exporter (tx-receipt-decoded-json) ($0.75 USDC). Input: tx_hash or window_blocks.