FAQ
What does Polystrike sell?
Section titled “What does Polystrike sell?”The record of Polymarket’s post-count markets for Elon Musk, Ted Cruz and Donald Trump: our own count, the XTracker count the markets settle on, the number the Polymarket page shows, the posts with our counted verdict, bucket prices and their history. We do not sell forecasts, trading signals, position sizing or portfolio advice.
Is there a free tier?
Section titled “Is there a free tier?”No. Since 2026-11-08 the API is paid-only: every data endpoint needs a Data key or a $0.01 x402 payment per call, and a call without either gets HTTP 402. POST /api/v1/keys/free returns 403 free_keys_paused.
What stays open without a key: GET /api/v1/health, POST /api/v1/waitlist, GET /api/v1/meta/crypto, and the public archive of parquet files older than 30 days (CC BY 4.0). The counter pages on polystrike.xyz are public too, about 30 minutes behind.
How do I get a Data key?
Section titled “How do I get a Data key?”Send $29 (30 days) or $290 (one year) in USDC on Polygon or Base to 0x2B1204Ed8152F888092cB4e25FeF6348C646C578, then submit the transaction hash and your email at polystrike.xyz/#waitlist or [email protected]. Keys are issued by hand, usually within a few hours.
What is x402?
Section titled “What is x402?”A protocol for paying per HTTP request. Call a data endpoint without a key; the 402 response carries the payment requirements in its PAYMENT-REQUIRED header. Pay $0.01 in USDC on Base and retry with the payment in X-PAYMENT (x402 v1) or PAYMENT-SIGNATURE (x402 v2). No key or account is needed. Bulk parquet files and the WebSocket are for Data keys only.
Why is real_counter higher than XTracker?
Section titled “Why is real_counter higher than XTracker?”Usually because XTracker has not scraped a new post yet: it updates about every 5 minutes, and we read @elonmusk every second. After a deletion it can also be because XTracker missed a post we kept: our count keeps a qualifying post we captured while it was live, and XTracker counted about 7 in 10 of the deletions we caught (52 measured). The market settles on XTracker’s count, not ours.
How fast is your count?
Section titled “How fast is your count?”It depends on the account. For @elonmusk a new post was in our count a median of 11.5 s after it was posted (measured on production 2026-07-29). @tedcruz is polled every 5 s, and Truth Social every ~15 s with a slower fallback of about every 5 minutes; the 11.5 s figure does not apply to either. Being early is not an edge: in our own paper testing, when a post pushed the count past a bucket boundary, the price had finished moving within about 2-3 seconds, before our feed had the post.
Does is_counted follow Polymarket’s rules?
Section titled “Does is_counted follow Polymarket’s rules?”It follows the published market rules. On X, main-feed posts, quote posts, reposts and main-feed replies count; in-thread replies and community reposts don’t. On Truth Social, Truths, quote Truths and ReTruths count; replies don’t.
Why does display_delta go negative?
Section titled “Why does display_delta go negative?”The Polymarket page sometimes shows a number above ours. We do not control that display, and it is a display figure only; the market pays on XTracker’s count.
Do you still offer predictions or trading signals?
Section titled “Do you still offer predictions or trading signals?”No. They were retired on 2026-11-08. /api/v1/signals/* and /api/v1/portfolio/* return HTTP 410, and /api/v1/prediction/{user} returns only counters, the posting pace over the last hour and each bucket’s market_price.