161 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-poisoning check before an agent or wallet sends crypto: pass the sending wallet and recipient; we scan the sender's real on-chain history (Ethereum, Base, optional Avalanche) and flag lookalike recipients, zero-v...
Public holiday and business-day calendar for US and UK: is a date a business day, add N business days, count business days between dates (net of holidays), and list a year's holidays. $0.01 per call in USDC on Base via x...
Which x402 API should I call? API recommender / discovery for agents: describe the need in plain words; get the best x402 endpoints from the WHOLE Bazaar (36k+ endpoints, re-indexed every 6 h) ranked by relevance, real 3...
Payment memos attached to B20 transfers: pairs each Memo(address,bytes32) log with its Transfer at the previous log index (same tx, same token). Give a tx hash for one transaction, or scan a block window. Returns memoHex...
ERC-20 metadata plus B20 signals for any Base address: name, symbol, decimals, total supply, best-effort paused/cap, bytecode size, and whether the address carries the factory-issued 0xB200 prefix. Works on plain ERC-20s...
Momentum across x402 sellers: which sellers are gaining settlements and buyers hour over hour on Base, graded for wash-trade resistance from the on-chain leaderboard. Use it when an agent is routing spend, researching th...
Boolean verdict with reasons: is this address a real factory-issued B20 on Base? Checks the 0xB200 address prefix, ERC-20 readability, and whether the B20 feature set is activated on the registry.
Your own settled calls in the shape a finance system posts: one row per payment with what was bought, the amount settled, the quoted ceiling where one applied, and the evidence - settlement transaction, sha256 of the byt...
Checks any x402 endpoint's unpaid 402 response: x402 version, accepted scheme, network, asset (is it USDC), price, payTo, https resource url, description, and Bazaar discovery metadata validated against its schema. Makes...
x402 endpoint check. Check an x402 seller before you pay it: decode any public endpoint's 402 payment requirements without paying (v1 body or v2 header) into USD price for native USDC, network, asset, recipient, scheme a...
Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum a...
Header + summary for a base block by number (or "latest"): hash, timestamp, tx count, gas used and base fee.
x402 Settlement Review: Replay and Double Charge — Reviews pasted seller-side x402 code that accepts the PAYMENT-SIGNATURE header, talks to the facilitator and delivers the goods (the cash register), for the silent failu...
Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, Sei, or Arc. Read-only on-chain call. The minimal single-token read for payment flows - for EVERY token a walle...
Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address
Use when a Brazilian postal code needs to become a real address — filling a form, validating a delivery, completing a customer record. JSON body { cep } (8 digits). Returns street, complement, neighborhood, city and stat...
Lists scheduled US economic releases (CPI, NFP, PPI, GDP, PCE) in a date range with times in ET and UTC.
Use when an agent needs IBAN validation before saving bank details, invoicing or a payout: structure, mod-97 and national BBAN checksum where defined, plus country, bank code, account code, bank name, BIC and SEPA member...
Pre-payment check of an x402 endpoint: one unpaid request, decodes the 402 offer (v1/v2): network, USDC or not, USD price, payTo, testnet, red flags.
Settlement assurance for a completed x402 payment on Base or Solana: confirm the transaction succeeded (0x hash or base58 signature), match the USDC transfer to an expected wallet and amount, format a receipt, and option...
x402 audit of a seller. Audit an x402 seller before an agent buys from it: decodes the endpoint's 402 terms without paying, OFAC-screens each payTo address, reads its account type and nonce on the payment network, checks...
Stripe Webhook Review — Reviews ONE Stripe webhook handler (the route code, in any language or framework) for the five mistakes that let a forged or repeated event move money, grant access or ship goods, and lists only t...
CUDA, driver and Ollama compatibility - GPU support, model memory fit and proof inference uses the GPU
Base payment check. Returns pong after settlement.