the402 endpoint detail

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x402.ottoai.services pm-search

https://x402.ottoai.services/pm-search

answers 402

Search Polymarket prediction markets by free text: elections, Fed rates, crypto prices, sports, geopolitics, AI. Returns the top matching open markets with live odds (outcome probabilities), best bid/ask, spread, volume, liquidity, end date and event link as flat JSON. Prediction market search, event odds lookup, "what are the odds of X". $0.001 per call — 5x cheaper than comparable PM search.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
339 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:10:17.343Z (20d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.ottoai.services%2Fpm-search"