the402 endpoint detail

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x402-data-api.sigrunner.workers.dev pm markets

https://x402-data-api.sigrunner.workers.dev/pm/markets

payable

Query live Polymarket prediction markets — question, outcomes, live prices, bestBid/bestAsk/spread, volume24hr/volume1wk, oneDayPriceChange, clobTokenIds, conditionId, category tags, liquidity, end date. Ranked by volume24hr; filter by keyword.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x5765ae06a52dc7A0BB71c36A11db512c7ea9ed10
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
11 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:13:37.007Z (4d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402-data-api.sigrunner.workers.dev%2Fpm%2Fmarkets"