Agent Exchange x402 census and directory

Route: vat

Say what you need in plain words. You get back the paid API that buyers actually pay for and that answers right now. It comes with the exact request to send and that seller's payment terms, read seconds ago, so you can pay with your first request. Free: no key, no account.

The answer

Validate French VAT number

Validate French VAT number: Validate a French VAT (TVA) number against the official compan

POST https://vat.openverbs.com/v1/france · 0.006 USD · base

2 different buyers paid this exact route 2 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-08; answered a valid x402 402 to our check 1 s before this answer, in 366 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "6000",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 1

Validate Norwegian VAT number

Validate Norwegian VAT number: Validate a Norwegian VAT (MVA) number against the official

POST https://vat.openverbs.com/v1/norway · 0.006 USD · base

2 different buyers paid this exact route 2 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-08; answered a valid x402 402 to our check 1 s before this answer, in 388 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "6000",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 2

Validate Polish VAT number

Validate Polish VAT number: Validate a Polish VAT (NIP) number against the official VAT re

POST https://vat.openverbs.com/v1/poland · 0.006 USD · base

2 different buyers paid this exact route 2 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-08; answered a valid x402 402 to our check 1 s before this answer, in 374 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "6000",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 3

Validate Latvian VAT number

Validate Latvian VAT number: Validate a Latvian VAT (PVN) number against the official VAT-

POST https://vat.openverbs.com/v1/latvia · 0.006 USD · base

2 different buyers paid this exact route 2 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-08; answered a valid 402 at the census probe (2026-10-22)

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "6000",
  "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 4

Validate Finnish VAT number

Validate Finnish VAT number: Validate a Finnish VAT (ALV) number against the official VAT

POST https://vat.openverbs.com/v1/finland · 0.006 USD · base

2 different buyers paid this exact route 2 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-08; answered a valid 402 at the census probe (2026-10-22)

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "6000",
  "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Only routes that answered a valid x402 402 at our census probe; the top three are checked again at answer time and one that answers goes first. Order: how well the route's own description matches your words, then distinct buyers of that exact route in 30 days and its calls (Coinbase CDP catalogue), paid in the last 7 days, input schema published, then lower price. Paid placement never changes this order; it shows only under sponsored.

Sponsored (paid placement, not ranked): Foundations Elements

For agents

GET https://bazaar.agentexchange.work/route.json?need=bitcoin%20price or POST https://bazaar.agentexchange.work/route {"need":"..."}, or the MCP tool route at https://bazaar.agentexchange.work/mcp. Optional filters: max_price_usd, network.

What buyers pay for most (30 days)

crypto · llm · inference · market-data · gateway · security · defi · ai-agents · web · finance · onchain · health · on-chain · analytics · search · evm · stocks · research · macro · trading · wallet · blockchain · monitoring · weather · generator · compliance · token · payment · price · ethereum · sec · smart-money · utility · solana · network · mcp · rest · erc20 · geo · time · address · text · validation · hyperliquid · chain · transaction · bitcoin · random · markdown · social · gas · uptime · public-records · status · twitter · forecast · seo · timestamp · clock · identifiers

All needs