geo-distance x402 REST usage
Great-circle distance between two lat/lon points (haversine formula). Returns km, mi or nm.
0.001 USDC per call
per call
x402.agentindex.world
x402.agentindex.world · 118 listed services · provider site
time-business-days x402 REST usage
Count weekdays (Mon-Fri) between two dates, inclusive of both endpoints.
0.001 USDC per call
per call
api-health-check x402 REST usage
Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET /...
0.001 USDC per call
per call
gas-price-checker x402 REST usage
Read the live gas price, EIP-1559 base fee and estimated native-transfer cost on Base, Ethereum, Polygon, Arbitrum or Optimism. No RPC key or account. Try GET /gas-price/sample.
0.001 USDC per call
per call
weather-forecast x402 REST usage
Current weather and a 3-day forecast for any city or lat/lon - temperature, humidity, wind, conditions. No account, no API key. Try GET /weather/sample.
0.001 USDC per call
per call
wallet-balance-checker x402 REST usage
Read native coin and USDC balances for any EVM wallet on Base, Ethereum, Polygon, Arbitrum or Optimism, with atomic amounts and current block. No RPC key or account. Try GET /wallet-balance/sample.
0.001 USDC per call
per call
extract-structured-data x402 REST usage
Extract structured data from a URL or raw text into strict JSON matching a schema you provide. Fields the content doesn't support come back null - never an invented or approximate value, and an unmatchable schema returns...
0.002 USDC per call
per call
x402-payment-test x402 REST usage
Cheapest possible Base-mainnet x402 conformance call: settle $0.001 of USDC and receive payer identity, request echo and receipt. Built for agents testing wallets, Payment-Signature, facilitators and settlement. Try GET...
0.001 USDC per call
per call
base-block-number x402 REST usage
Latest Base mainnet block height via eth_blockNumber - the current chain tip.
0.001 USDC per call
per call
number-roman x402 REST usage
Convert an integer (1-3999) to a Roman numeral, or a Roman numeral back to an integer.
0.001 USDC per call
per call
validate-iban x402 REST usage
ISO 13616 IBAN mod-97 checksum validation, with optional BIC (ISO 9362) format check.
0.002 USDC per call
per call
fact-check x402 REST usage
Fact-check verdict written by Claude Haiku 5.5 (Anthropic) from real web sources: supported/contradicted/mixed/unverifiable, each source with its stance (supports/contradicts/neutral). Answer in a few seconds. Try GET /f...
0.02 USDC per call
per call
time-humanize x402 REST usage
Human-readable relative time ('2 hours ago', 'in 3 days') between a datetime and a reference (default now).
0.002 USDC per call
per call
token-verdict-card x402 REST usage
Base token safety check: Claude Haiku 5.5 (Anthropic) writes a rug pull / honeypot verdict (SAFE/CAUTION/RISKY/DANGER) from on-chain data, a tagline, a short explanation. Deterministic fallback if Claude is slow, honestl...
0.02 USDC per call
per call
base-chain-id x402 REST usage
Base mainnet chain ID (EIP-155) via eth_chainId - confirm which network you're actually talking to.
0.001 USDC per call
per call
base-network-info x402 REST usage
Base mainnet network info in one call: chain ID, block height, and current gas price (wei and gwei).
0.001 USDC per call
per call
AgentIndex Translate x402 REST usage
Translate up to 200 text segments in a single call - the same result that would otherwise take 200 separate calls to translate a whole file. Markdown, HTML and {x} placeholders preserved per segment, order and count kept...
0.002 USDC per call
per call
json-flatten x402 REST usage
Flatten a nested JSON document into single-level dotted-path keys.
0.001 USDC per call
per call
base-simulate x402 REST checked
Simulate a Base mainnet transaction before sending it - will it succeed, estimated gas, and the decoded revert reason if it would fail.
0.005 USDC per call
per call
checked
base-estimate-gas x402 REST checked
Gas estimate for a Base mainnet swap or any other call (to/from/value/data) via eth_estimateGas, without broadcasting a transaction.
0.004 USDC per call
per call
checked
base-allowance x402 REST usage
ERC20 allowance on Base mainnet via RPC: how much a spender is approved to move from an owner balance, read with allowance(owner,spender) eth_call.
0.003 USDC per call
per call
base-block x402 REST usage
Fetch a Base mainnet block header and transaction hashes by number, tag (latest/earliest/safe/finalized), or hash via eth_getBlockByNumber/eth_getBlockByHash.
0.003 USDC per call
per call
base-code x402 REST usage
Check whether a Base mainnet address is a contract via eth_getCode - returns bytecode size, zero for an externally-owned account.
0.003 USDC per call
per call
base-erc1155-balance x402 REST usage
ERC1155 multi-token balance for a wallet and token id on Base mainnet via balanceOf(address,uint256).
0.003 USDC per call
per call
base-erc20-balance x402 REST usage
ERC20 token balance for a wallet on Base mainnet - balanceOf() and decimals() batched into one Multicall3 round trip.
0.003 USDC per call
per call
regex-test x402 REST usage
Test a regular expression against text; returns match status, capture groups and span.
0.001 USDC per call
per call
base-live-balance x402 REST usage
Native ETH balance plus up to 20 ERC20 token balances for one wallet on Base mainnet, in a single Multicall3 round trip regardless of token count.
0.003 USDC per call
per call
base-nonce x402 REST usage
Next transaction nonce for any Base mainnet wallet via eth_getTransactionCount - how many transactions it has sent.
0.003 USDC per call
per call
pdf-to-markdown x402 REST usage
Extract a public PDF (by HTTPS URL or base64) into clean Markdown - headings and tables preserved via layout-aware parsing, plus title/author/page count/date metadata and a real token count. Text content itself is never...
0.002 USDC per call
per call
base-quote x402 REST usage
Slippage estimate, swap quote, and best DEX price on Base - compares Uniswap v2, Uniswap v3, and Aerodrome on-chain via Multicall3, returns amount received, chosen path, and price impact.
0.003 USDC per call
per call
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