Pro access and machine-payable data
Paid endpoints are settled in USDC on Base using the x402 protocol. There is no account, no API key and no subscription form — a client pays per request, or a browser unlocks a time-limited pass with a wallet.
Browser access
24-hour Pro access
Full depth simulation, complete gap feed, every generated explanation and the full evidence package behind each briefing, for 1 day.
7-day Pro access
Full depth simulation, complete gap feed, every generated explanation and the full evidence package behind each briefing, for 7 days.
Single reports are also available where they appear: 1.00 USDC for a deep market report and 2.00 USDC for a deep matched-pair report.
Paid API endpoints
| Endpoint | What it returns | Price | Updates |
|---|---|---|---|
GET /markets/api/pro/what-is-movingRanked cross-venue movement with significance and flow context | Every qualifying mover on both venues for the 1h, 6h, 24h and 7d windows, with movement significance, trade acceleration, the largest trade in the window and the matched contract on the other venue. | 0.10 USDC | every 5 minutes |
GET /markets/api/pro/full-gap-feedComplete Kalshi/Polymarket discrepancy board | All active matched pairs with both probabilities, the signed and absolute gap, liquidity-weighted gap, historical percentile, movement lead/lag, match grade and theoretical edge where the pair qualifies. | 0.20 USDC | every 5 minutes |
GET /markets/api/pro/pair/{id}Deep matched-pair intelligence | Full pair record including deterministic component scores, hard conflicts, semantic verifier output, outcome mapping, gap history, order-book depth simulation at six budgets, risk flags and the generated explanation. | 0.25 USDC | every 5 minutes; matching re-verified hourly |
GET /markets/api/pro/flow/{marketId}Trade-flow analysis for one market | Recent trades with notional, block-trade flags, price before, price five minutes later, realised movement and impact score, plus the most price-impactful trades ranked separately from the largest. | 0.15 USDC | every 5 minutes |
GET /markets/api/pro/timeline/{marketId}Reconstructed event timeline | Deterministic chronology of price moves, notable trades and cross-venue gap changes, each entry carrying an evidence id that the explanation endpoints reference. | 0.15 USDC | every 5 minutes |
GET /markets/api/pro/morningComplete morning briefing data package | The frozen evidence package behind today’s briefing: top movers and trades on both venues, discrepancies, Grade A opportunities, lead/lag events, the article content and the evidence hash. | 0.25 USDC | daily at 08:00 America/New_York |
GET /markets/api/pro/data-package/{marketId}Complete data package for one market | Everything held for a market in one response: normalized record, quote, full snapshot history, order book, trades with impact, timeline, matched pair, arbitrage and explanation. | 0.25 USDC | every 5 minutes |
For agents and automated clients
Request any paid endpoint without payment and it returns 402 Payment Required with the full payment requirements, a description of the data and a pointer to the free alternative — enough for a client to decide whether paying is worthwhile before it does.
/markets/openapi.json— full schema for free and paid endpoints/markets/.well-known/x402— payment discovery document/markets/llms.txt— plain-text description of the service
Settlement: scheme exact, network eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.
The free tier is not crippled
Everything this site displays is available free over the public API: the overview, movers on both venues across all four windows, the gap board, trade boards and every published briefing. Paid endpoints add depth — full depth simulation, complete feeds without truncation, per-market evidence packages and the reconstructed timelines — not access to the basics.
Published by the ProudGlobeHead Markets Desk. Market data belongs to Kalshi and Polymarket.