Agent Exchange x402 census and directory

Route: dns

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

dns-intel-api-production.up.railway.app

Reverse-DNS lookup for an IP: PTR record plus a best-effort list of other domains hosted o

POST https://dns-intel-api-production.up.railway.app/dns/reverse · 0.002 USD · base

6 different buyers paid this exact route 8 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-23; answered a valid x402 402 to our check 1 s before this answer, in 227 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "amount": "2000",
  "payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 1

DNSSEC Health Check

DNSSEC Health Check: DNSSEC health check: reports whether a domain is DNSSEC-signed (DNSKE

GET https://dns.use.x402atlas.com/dnssec · 0.005 USD · base

6 different buyers paid this exact route 11 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-21; answered a valid x402 402 to our check 1 s before this answer, in 133 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "amount": "5000",
  "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
  "maxTimeoutSeconds": 300,
  "extra": {
   "merchant": "x402Atlas",
   "name": "USD Coin",
   "tier": "standard",
   "version": "2"
  }
 },
 {
  "scheme": "exact",
  "network": "eip155:137",
  "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
  "amount": "5000",
  "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
  "maxTimeoutSeconds": 300,
  "extra": {
   "merchant": "x402Atlas",
   "name": "USD Coin",
   "tier": "standard",
   "version": "2"
  }
 },
 {
  "scheme": "exact",
  "network": "eip155:42161",
  "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
  "amount": "5000",
  "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
  "maxTimeoutSeconds": 300,
  "extra": {
   "merchant": "x402Atlas",
   "name": "USD Coin",
   "tier": "standard",
   "version": "2"
  }
 }
]

census record · seller

Alternative 2

DNS TXT Record Lookup

DNS TXT Record Lookup: DNS TXT record lookup — a domain's TXT records as a clean JSON list

GET https://dns.use.x402atlas.com/txt · 0.005 USD · base

6 different buyers paid this exact route 10 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-24; answered a valid x402 402 to our check 1 s before this answer, in 125 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "amount": "5000",
  "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
  "maxTimeoutSeconds": 300,
  "extra": {
   "merchant": "x402Atlas",
   "name": "USD Coin",
   "tier": "standard",
   "version": "2"
  }
 },
 {
  "scheme": "exact",
  "network": "eip155:137",
  "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
  "amount": "5000",
  "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
  "maxTimeoutSeconds": 300,
  "extra": {
   "merchant": "x402Atlas",
   "name": "USD Coin",
   "tier": "standard",
   "version": "2"
  }
 },
 {
  "scheme": "exact",
  "network": "eip155:42161",
  "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
  "amount": "5000",
  "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
  "maxTimeoutSeconds": 300,
  "extra": {
   "merchant": "x402Atlas",
   "name": "USD Coin",
   "tier": "standard",
   "version": "2"
  }
 }
]

census record · seller

Alternative 3

DNS & WHOIS Lookup

DNS & WHOIS Lookup: Send up to 10 domain names and get back every DNS record type (A, AAAA

POST https://dns-whois-lookup.underscoredone.com/lookup · 0.01 USD · base

5 different buyers paid this exact route 7 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-21; 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": "10000",
  "payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 4

DNS Doctor

DNS Doctor: One DNS Doctor bulk scan of 2-50 domains in a single call, priced per domain.

POST https://dnsdoctor.dev/api/v1/bulk-scan · 0.01 USD · base

6 different buyers paid this exact route 7 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-23; answered a valid 402 at the census probe (2026-10-22)

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "base",
  "amount": "10000",
  "payTo": "0x6fDc1f22520151DfBc6273d6C48E413D434C7916",
  "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