Prediction-market directory
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Compare the statements and evidence we have collected. Each column retains its source dates; historical claims and missing fields are visible.
Catalogue fields are historical source statements. Page metadata may refer to a publisher or embedded product. Neither establishes the verified legal operator, present pricing, regulatory status or quality of a service.
Download this comparison as CSV| Field | Probalytics VE-5cd53ea982a3a981 | Dome VK-fcb9335045ae2be4 |
|---|---|---|
| Product overview | Historical trades, markets and 1ms orderbook snapshots for Polymarket and Kalshi via REST, ClickHouse SQL, Python SDK and Parquet exports. | Dome’s documentation announces its acquisition by Polymarket and an API retirement date of 28 April 2026. The accessible documentation is historical integration material. |
| Research classification | Data & APIs | Data & APIs |
| Resource type | Product or service | Product or service |
| Platforms named in product context | Polymarket, Kalshi | Polymarket, Kalshi |
| Documented capabilities | Data API: Programmatic access is described in the product overview.; Historical data: The product describes access to retained market observations or history.; Data exports: File export or downloadable data is described.; Order book tools: Order book or market depth information appears in the product overview.; Developer SDK: A software development kit or language client is described. | Not established |
| Latest sourced pricing | Paid data plans cover REST, SQL and Parquet access, with a three-day trial advertised. The relevant historical data and delivery scope determine the appropriate plan. | Not published |
| Developer and product resources | Pricing: https://www.probalytics.io/pricing; Documentation: https://docs.probalytics.io/introduction; Linked source repository: https://github.com/Probalytics/probalytics-python | Documentation: https://docs.domeapi.io/ |
| Website research check | 2026-10-31T02:05:54.457674+00:00; Public page content was obtained during the dated check. Reachability does not establish continuing service availability. | 2026-10-31T02:26:35.431658+00:00; Public page content was obtained during the dated check. Reachability does not establish continuing service availability. |
| Published contributor description | Not supplied | Not supplied |
| Contributor pricing statement | Not supplied | Not supplied |
| Contributor details published | Not supplied | Not supplied |
| Profile claim | No active approved claim | No active approved claim |
| Record evidence | First-party website observation | Historical catalogue only |
| Historical product description | Historical trades, markets and 1ms orderbook snapshots for Polymarket and Kalshi via REST, ClickHouse SQL, Python SDK and Parquet exports. | Formerly a unified data API and SDK for Polymarket and Kalshi with historical orderbooks and websockets. Acquired by Polymarket; its APIs were retired in April 2026. |
| Name in the historical catalogue | Probalytics | Dome |
| Reported category | Data & APIs | Data & APIs |
| Reported venues | Polymarket, Kalshi | Polymarket, Kalshi |
| Historical pricing statement | Starter $39/mo + Pro $129/mo + $249/mo tier, 3 day trial | Not published |
| Open-source claim | Source says yes | Source says no |
| Execution claim | Source says no | Source says no |
| Historical status statement | live | shut_down |
| Historical backer statement | Not stated | Y Combinator (F25) |
| Catalogue-reported repository | https://github.com/Probalytics/probalytics-python | Not stated |
| Catalogue's own check date | 2026-08-27 | 2026-08-27 |
| Catalogue snapshot date (UTC) | 2026-09-08 | 2026-09-08 |
| Operator name in page metadata | Not captured | Not captured |
| Location in page metadata | Not captured | Not captured |
| Founding date in page metadata | Not captured | Not captured |
| Page-declared statements | 20 | 0 |
| Linked repository records | 0 | 0 |
| Vultax assessment | Not assessed | Not assessed |
| Website | https://probalytics.io/ | https://domeapi.io |
| Evidence | View source (opens in a new tab) Snapshot: Complete profile and history | View source (opens in a new tab) Snapshot: Complete profile and history |
Historical descriptions and catalogue claims: Kairos contributors, CC BY 4.0. Vultax adds source matching, presentation and factual comparisons. Attribution, licences and coverage.