Agent Exchange x402 census and directory

Route: markets

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

api.onesource.io

Deepstate, the on-chain order-book exchange on Robinhood Chain. Lists the markets this ser

GET https://api.onesource.io/deepstate/v1/markets · 0.005 USD · base

207 different buyers paid this exact route 207 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 45 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "amount": "5000",
  "maxAmountRequired": "5000",
  "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
  "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
  "maxTimeoutSeconds": 3600,
  "extra": {
   "credentialTypes": [
    "authorization"
   ],
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 1

Oblique Markets

Oblique Markets: Use when an agent needs a trusted UTC timestamp or the smallest end-to-en

GET https://api.oblique.markets/api/v1/paid/time · 0.01 USD · base

53 different buyers paid this exact route 85 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 24 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "10000",
  "maxAmountRequired": "10000",
  "maxTimeoutSeconds": 60,
  "resource": "https://api.oblique.markets/api/v1/paid/time",
  "description": "Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Returns Current server time as ISO 8601 and Unix epoch milliseconds, returned only after a real settlement. $0.01.",
  "payTo": "0x970007590aCC5C938cd51345B17AF51B1B40D3Ab",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "extra": {
   "name": "USD Coin",
   "version": "2",
   "bazaar": {
    "enabled": true,
    "category": "utility",
    "tags": [
     "time",
     "clock",
     "timestamp",
     "x402-test",
     "utility"
    ],
    "serviceName": "Oblique Markets",
    "iconUrl": "https://oblique.markets/icon.png",
    "description": "Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Returns Current server time as ISO 8601 and Unix epoch milliseconds, returned only after a real settlement. $0.01.",
    "output": {
     "type": "json",
     "example": {
      "timestamp": "2026-01-01T00:00:00.000Z",
      "epoch": 1767225600000,
      "timezone": "UTC",
      "message": "This response was paid for via x402 protocol"
     }
    }
   }
  }
 },
 {
  "scheme": "exact",
  "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
  "amount": "10000",
  "maxTimeoutSeconds": 60,
  "maxAmountRequired": "10000",
  "resource": "https://api.oblique.markets/api/v1/paid/time",
  "description": "Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Returns Current server time as ISO 8601 and Unix epoch milliseconds, returned only after a real settlement. $0.01.",
  "payTo": "GYyTRmt317JafPHXPnM54Fsvsma5GnS9wm6qGMqaykdS",
  "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "extra": {
   "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
   "name": "USD Coin",
   "bazaar": {
    "enabled": true,
    "category": "utility",
    "tags": [
     "time",
     "clock",
     "timestamp",
     "x402-test",
     "utility"
    ],
    "serviceName": "Oblique Markets",
    "iconUrl": "https://oblique.markets/icon.png",
    "description": "Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Returns Current server time as ISO 8601 and Unix epoch milliseconds, returned only after a real settlement. $0.01.",
    "output": {
     "type": "json",
     "example": {
      "timestamp": "2026-01-01T00:00:00.000Z",
      "epoch": 1767225600000,
      "timezone": "UTC",
      "message": "This response was paid for via x402 protocol"
     }
    }
   }
  }
 }
]

census record · seller

Alternative 2

Oblique Markets

Oblique Markets: Use when an agent needs base block number. Returns Fetch the current Base

GET https://api.oblique.markets/api/v1/paid/base-block-number · 0.002 USD · base

55 different buyers paid this exact route 62 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 187 ms

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "2000",
  "maxAmountRequired": "2000",
  "maxTimeoutSeconds": 60,
  "resource": "https://api.oblique.markets/api/v1/paid/base-block-number",
  "description": "Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant public RPCs and return structured JSON with source and freshness metadata. $0.002.",
  "payTo": "0x970007590aCC5C938cd51345B17AF51B1B40D3Ab",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "extra": {
   "name": "USD Coin",
   "version": "2",
   "bazaar": {
    "enabled": true,
    "category": "chain-data",
    "tags": [
     "base",
     "block",
     "number",
     "chain-data"
    ],
    "serviceName": "Oblique Markets",
    "iconUrl": "https://oblique.markets/icon.png",
    "description": "Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant public RPCs and return structured JSON with source and freshness metadata. $0.002.",
    "output": {
     "type": "json",
     "example": {
      "block_number": 33712840,
      "network": "eip155:8453",
      "as_of": "2026-08-10T12:00:00.000Z"
     }
    }
   }
  }
 },
 {
  "scheme": "exact",
  "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
  "amount": "2000",
  "maxTimeoutSeconds": 60,
  "maxAmountRequired": "2000",
  "resource": "https://api.oblique.markets/api/v1/paid/base-block-number",
  "description": "Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant public RPCs and return structured JSON with source and freshness metadata. $0.002.",
  "payTo": "GYyTRmt317JafPHXPnM54Fsvsma5GnS9wm6qGMqaykdS",
  "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "extra": {
   "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
   "name": "USD Coin",
   "bazaar": {
    "enabled": true,
    "category": "chain-data",
    "tags": [
     "base",
     "block",
     "number",
     "chain-data"
    ],
    "serviceName": "Oblique Markets",
    "iconUrl": "https://oblique.markets/icon.png",
    "description": "Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant public RPCs and return structured JSON with source and freshness metadata. $0.002.",
    "output": {
     "type": "json",
     "example": {
      "block_number": 33712840,
      "network": "eip155:8453",
      "as_of": "2026-08-10T12:00:00.000Z"
     }
    }
   }
  }
 }
]

census record · seller

Alternative 3

BlockRun.AI

BlockRun.AI: Query Polymarket markets with filtering, sorting, and pagination

GET https://blockrun.ai/api/v1/pm/polymarket/markets · 0.0085 USD · base

101 different buyers paid this exact route 154 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-25; answered a valid 402 at the census probe (2026-09-30)

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "8500",
  "payTo": "0x6E007731870EDe419CfB31889Cd5C4493CEcb04c",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 300,
  "extra": {
   "name": "USD Coin",
   "version": "2"
  }
 }
]

census record · seller

Alternative 4

Oblique Markets

Oblique Markets: Use when an agent wants one-call situational awareness of the x402 Bazaar

GET https://api.oblique.markets/api/v1/paid/bazaar-pulse · 0.002 USD · base

39 different buyers paid this exact route 45 times in the last 30 days (Coinbase CDP catalogue), last on 2026-10-21; answered a valid 402 at the census probe (2026-09-30)

Payment terms (sign and send with the first request)
[
 {
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "2000",
  "payTo": "0x970007590aCC5C938cd51345B17AF51B1B40D3Ab",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "maxTimeoutSeconds": 60,
  "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