saylorinnovations.com
Base, Arbitrum, Polygon · payout 0xa2a8df0f7caabea4e120a2568118f141569fc8aa
Answers HTTP 402
9 of 9 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-10-05
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
58 x402-style payments from 8 distinct payers, $0.13 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 58
- Outside payers
- 8
- USDC
- 0.13
All USDC received at this payout address: $0.13 (includes payments that are not x402)
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xa2a8df0f7caabea4e120a2568118f141569fc8aa | 162 | 3 of 3 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-05 | 58 x402-style payments from 8 distinct payers, $0.13 USDC in the last 7 days (Base, exact read) |
| Arbitrum | 0xa2a8df0f7caabea4e120a2568118f141569fc8aa | 162 | 3 of 3 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-05 | unknown. not measured on this chain yet |
| Polygon | 0xa2a8df0f7caabea4e120a2568118f141569fc8aa | 162 | 3 of 3 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-05 | unknown. not measured on this chain yet |
- Hosts
- saylorinnovations.com
- Listings
- 486 registered in the x402 catalogue
- Price range
- $0.0010 to $0.010 per call, as registered
- Categories (auto)
- Onchain data (204), Other (129), Developer tools (57), Market data (33), Identity (21), Security (12), Commerce (9), Media (6), Web data (6), Agents (3), Inference (3), Search (3)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0xa2a8df…9fc8aa to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Registrations · 486
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://saylorinnovations.com/api/evm/bsc/contract/:address EVM Contract Introspection (bsc). BNB Chain contract introspection: contract vs wallet, bytecode size, proxy detection and BEP-20 name, symbol, decimals, total supply. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/contract/:address EVM Contract Introspection (bsc). BNB Chain contract introspection: contract vs wallet, bytecode size, proxy detection and BEP-20 name, symbol, decimals, total supply. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/events/:address Contract Event Logs (bsc). BNB Chain (BSC) contract event logs over a recent block window: block, transaction hash, log index, topics and data, optionally filtered by event signature (?topic0=). Use it to watch a contra… | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/events/:address Contract Event Logs (bsc). BNB Chain (BSC) contract event logs over a recent block window: block, transaction hash, log index, topics and data, optionally filtered by event signature (?topic0=). Use it to watch a contra… | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/nonce/:address EVM Nonce (bsc). BNB Chain (BSC) account nonce for any address: confirmed nonce and pending nonce (a gap means transactions are still waiting in the mempool). Use it before sending a transaction or to detect a pending o… | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/nonce/:address EVM Nonce (bsc). BNB Chain (BSC) account nonce for any address: confirmed nonce and pending nonce (a gap means transactions are still waiting in the mempool). Use it before sending a transaction or to detect a pending o… | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/storage/:address/0 Contract Storage Slot (bsc). BNB Chain (BSC) raw contract storage slot read with the value also decoded as a uint256 and as an address. Use it to inspect proxy implementations, owners, paused flags and other on-chain st… | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/storage/:address/0 Contract Storage Slot (bsc). BNB Chain (BSC) raw contract storage slot read with the value also decoded as a uint256 and as an address. Use it to inspect proxy implementations, owners, paused flags and other on-chain st… | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/transfers/:address Token Transfer History (bsc). BNB Chain token transfer history for a wallet (in/out labelled, decoded amounts). | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/transfers/:address Token Transfer History (bsc). BNB Chain token transfer history for a wallet (in/out labelled, decoded amounts). | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/tx/:hash EVM Transaction Details (bsc). BNB Chain transaction details: status, from/to, value, block, gas used, fee, event count, method selector. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/bsc/tx/:hash EVM Transaction Details (bsc). BNB Chain transaction details: status, from/to, value, block, gas used, fee, event count, method selector. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/allowance/:address/:address2/:address3 ERC-20 Allowance (ethereum). Ethereum ERC-20 allowance: how much a spender may move from an owner, human-readable, with an unlimited-approval flag. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/allowance/:address/:address2/:address3 ERC-20 Allowance (ethereum). Ethereum ERC-20 allowance: how much a spender may move from an owner, human-readable, with an unlimited-approval flag. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/balance/:address EVM Wallet Balances (ethereum). Ethereum ERC-20 token balance and native ETH balance for any wallet: up to 20 ERC-20 tokens (?tokens=) in one call, with symbols, decimals and human-readable amounts. Live chain head. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/balance/:address EVM Wallet Balances (ethereum). Ethereum ERC-20 token balance and native ETH balance for any wallet: up to 20 ERC-20 tokens (?tokens=) in one call, with symbols, decimals and human-readable amounts. Live chain head. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/block/latest EVM Block (ethereum) — On-Chain Data | Arbitrum | Onchain data | unknown | 2026-10-05 |
https://saylorinnovations.com/api/evm/ethereum/block/latest EVM Block (ethereum) — On-Chain Data | Polygon | Onchain data | unknown | 2026-10-05 |
https://saylorinnovations.com/api/evm/ethereum/call/:address Read-Only Contract Call (eth_call) (ethereum). Ethereum read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/call/:address Read-Only Contract Call (eth_call) (ethereum). Ethereum read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/contract/:address EVM Contract Introspection (ethereum). Ethereum contract introspection: contract vs wallet (incl. EIP-7702 delegation), bytecode size, proxy detection (EIP-1967 implementation/admin/beacon and legacy OpenZeppelin slots)… | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/contract/:address EVM Contract Introspection (ethereum). Ethereum contract introspection: contract vs wallet (incl. EIP-7702 delegation), bytecode size, proxy detection (EIP-1967 implementation/admin/beacon and legacy OpenZeppelin slots)… | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/erc1155-balance/:address/:address2/1 ERC-1155 Balance (ethereum). ERC-1155 balance: how many copies of a token id a wallet holds. Any of 5 chains. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/erc1155-balance/:address/:address2/1 ERC-1155 Balance (ethereum). ERC-1155 balance: how many copies of a token id a wallet holds. Any of 5 chains. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/events/:address Contract Event Logs (ethereum). Ethereum contract event logs: raw logs for a contract, optional ?topic0= event filter, up to 2,000 blocks, newest first, up to 200 rows. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/events/:address Contract Event Logs (ethereum). Ethereum contract event logs: raw logs for a contract, optional ?topic0= event filter, up to 2,000 blocks, newest first, up to 200 rows. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nft-metadata/:address/1 NFT Metadata (ERC-721 / ERC-1155) (ethereum). NFT metadata for ERC-721 and ERC-1155: tokenURI resolved (IPFS, Arweave, data: URIs) and the JSON fetched and parsed, with a direct image URL. Any of 5 chains. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nft-metadata/:address/1 NFT Metadata (ERC-721 / ERC-1155) (ethereum). NFT metadata for ERC-721 and ERC-1155: tokenURI resolved (IPFS, Arweave, data: URIs) and the JSON fetched and parsed, with a direct image URL. Any of 5 chains. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nft-owner/:address/1 NFT Owner (ERC-721) (ethereum). NFT owner (ERC-721 ownerOf) for any collection on Base, Ethereum, Arbitrum, Optimism or Polygon. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nft-owner/:address/1 NFT Owner (ERC-721) (ethereum). NFT owner (ERC-721 ownerOf) for any collection on Base, Ethereum, Arbitrum, Optimism or Polygon. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nfts/:address/:address2 NFTs Held in a Collection (ERC-721 Enumerable) (ethereum). NFTs a wallet holds in a collection (ERC-721 Enumerable): balance and up to 50 token ids. Any of 5 chains. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nfts/:address/:address2 NFTs Held in a Collection (ERC-721 Enumerable) (ethereum). NFTs a wallet holds in a collection (ERC-721 Enumerable): balance and up to 50 token ids. Any of 5 chains. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nonce/:address EVM Nonce (ethereum). Ethereum account nonce: confirmed and pending transaction count for any address. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/nonce/:address EVM Nonce (ethereum). Ethereum account nonce: confirmed and pending transaction count for any address. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/storage/:address/0 Contract Storage Slot (ethereum). Ethereum contract storage slot read: raw 32-byte value plus uint and address decodings. | Arbitrum | Developer tools | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/storage/:address/0 Contract Storage Slot (ethereum). Ethereum contract storage slot read: raw 32-byte value plus uint and address decodings. | Polygon | Developer tools | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/transfers/:address Token Transfer History (ethereum). Ethereum token transfer history: ERC-20 and ERC-721 Transfer events for a token, filtered to one wallet (?wallet=, in/out labelled, up to 2,000 blocks) or the latest 20 blocks unfilter… | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/transfers/:address Token Transfer History (ethereum). Ethereum token transfer history: ERC-20 and ERC-721 Transfer events for a token, filtered to one wallet (?wallet=, in/out labelled, up to 2,000 blocks) or the latest 20 blocks unfilter… | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/tx/:hash EVM Transaction Details (ethereum). Ethereum transaction details: status, from/to, value, block, nonce, gas used, total fee, event count and method selector. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/ethereum/tx/:hash EVM Transaction Details (ethereum). Ethereum transaction details: status, from/to, value, block, nonce, gas used, total fee, event count and method selector. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/allowance/:address/:address2/:address3 ERC-20 Allowance (optimism). Optimism ERC-20 allowance: how much a spender may move from an owner, human-readable, with an unlimited-approval flag. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/allowance/:address/:address2/:address3 ERC-20 Allowance (optimism). Optimism ERC-20 allowance: how much a spender may move from an owner, human-readable, with an unlimited-approval flag. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/balance/:address EVM Wallet Balances (optimism). Optimism ERC-20 token balance and native ETH balance for any wallet: up to 20 ERC-20 tokens (?tokens=) in one call, with symbols, decimals and human-readable amounts. Live chain head. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/balance/:address EVM Wallet Balances (optimism). Optimism ERC-20 token balance and native ETH balance for any wallet: up to 20 ERC-20 tokens (?tokens=) in one call, with symbols, decimals and human-readable amounts. Live chain head. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/call/:address Read-Only Contract Call (eth_call) (optimism). Optimism read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/call/:address Read-Only Contract Call (eth_call) (optimism). Optimism read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data. | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/contract/:address EVM Contract Introspection (optimism). Optimism contract introspection: contract vs wallet (incl. EIP-7702 delegation), bytecode size, proxy detection (EIP-1967 and legacy OpenZeppelin slots) and ERC-20 name, symbol, de… | Arbitrum | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/contract/:address EVM Contract Introspection (optimism). Optimism contract introspection: contract vs wallet (incl. EIP-7702 delegation), bytecode size, proxy detection (EIP-1967 and legacy OpenZeppelin slots) and ERC-20 name, symbol, de… | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/events/:address Contract Event Logs (optimism). Optimism contract event logs: raw logs for a contract, optional ?topic0= event filter, up to 2,000 blocks, newest first, up to 200 rows. | Polygon | Onchain data | unknown | 2026-09-25 |
https://saylorinnovations.com/api/evm/optimism/events/:address Contract Event Logs (optimism). Optimism contract event logs: raw logs for a contract, optional ?topic0= event filter, up to 2,000 blocks, newest first, up to 200 rows. | Arbitrum | Onchain data | unknown | 2026-09-25 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.