Agent Exchange x402 census and directory

Route: latency

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

Agent Web Tools

Agent Web Tools: Check if a URL is up: status, latency, redirects, title.

GET https://agent-web-tools.agent-web-tools.workers.dev/v1/check · 0.001 USD · base

7 different buyers paid this exact route 50 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-25; answered a valid x402 402 to our check 1 s before this answer, in 372 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "1000",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "payTo": "0xF22b154E0858c97c42CC4a1151e26Ea1797fa6C3",
  "maxTimeoutSeconds": 60,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 1

iotwerk_edge_compute_bid

iotwerk_edge_compute_bid: Filters caller-supplied bids by CPU, memory and latency constrai

POST https://iot.halowerk.com/v1/edge-compute-bid · 0.004 USD · base

6 different buyers paid this exact route 9 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-25; answered a valid x402 402 to our check 1 s before this answer, in 618 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "4000",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
  "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
  "maxTimeoutSeconds": 300,
  "extra": {
   "asset": "USDC",
   "network_name": "Base Mainnet",
   "name": "USD Coin",
   "version": "2",
   "assetTransferMethod": "eip3009",
   "eip712Domain": {
    "name": "USD Coin",
    "version": "2",
    "chainId": 8453,
    "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
   }
  }
 }
]

census record · seller

Alternative 2

Quartermaster HTTP Check

Quartermaster HTTP Check: Liveness/latency pre-flight for a URL: is it up, HTTP status and

GET https://quartermaster.surewhynot.app/v1/http-check · 0.001 USD · base

5 different buyers paid this exact route 6 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 560 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "1000",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "payTo": "0x5253666c40432f009ebd99908b9cd2a7fd1019cb",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 },
 {
  "scheme": "exact",
  "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
  "amount": "1000",
  "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "payTo": "FgcKNzsBXSEHGNZNWetPsjXiBZk1WFoU6sF2zVsnzXfa",
  "maxTimeoutSeconds": 300,
  "extra": {
   "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
  }
 }
]

census record · seller

Alternative 3

DCL Evaluator

DCL Evaluator: Low-latency pre-action screening for routine agent responses and tool-call

POST https://bazaar.fronesislabs.com/evaluate/fast · 0.01 USD · base

5 different buyers paid this exact route 9 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": "0xb790ed3796194E5511C44411CF045F67E069cdC0",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 4

vending-machine-seven.vercel.app

Public URL status, latency, and response header subset for uptime and health agents

GET https://vending-machine-seven.vercel.app/api/v/http-head · 0.002 USD · base

5 different buyers paid this exact route 5 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": "eip155:8453",
  "amount": "2000",
  "payTo": "0xc648116b5deBE4AF7D78838AA468d07e0A9Ab697",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 120,
  "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