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 | Polymarket Documentation VE-d73a2d47c72de184 | DepthFeed VE-2138d31a52279f00 |
|---|---|---|
| Product overview | Polymarket's central limit order book REST and WebSocket API at clob.polymarket.com for order books, prices, order placement and cancellation with signed authentication. | DepthFeed provides data or programmatic research tools. Its overview names Polymarket, Kalshi. Publicly described capabilities include websocket delivery, historical data, replay and backtesting, order book tools, data api. |
| Research classification | Data & APIs | Data & APIs |
| Resource type | Documentation | Product or service |
| Platforms named in product context | Polymarket | Polymarket, Kalshi |
| Documented capabilities | Data API: Programmatic access is described in the product overview.; Developer SDK: A software development kit or language client is described. | WebSocket delivery: The source describes a WebSocket interface or stream.; Historical data: The product describes access to retained market observations or history.; Replay and backtesting: The source describes working with past market states or testing strategies against history.; Order book tools: Order book or market depth information appears in the product overview.; Data API: Programmatic access is described in the product overview.; AI analysis: The overview describes using AI or machine learning. Accuracy and trading performance have not been independently established here.; Sports and esports: Sports-related events or odds appear in the product scope. |
| Latest sourced pricing | Free; maker fee 0, taker fee by category (0.04 to 0.07 rate factor) | Plans are advertised from $0 to $249/month. Data-history, streaming, backtesting and paper-trading entitlements vary by plan. |
| Developer and product resources | Documentation: https://docs.polymarket.com/ | Pricing: https://depthfeed.com/pricing; About the product: https://depthfeed.com/about; Documentation: https://depthfeed.com/docs |
| Website research check | 2026-10-31T02:06:41.464807+00:00; Public page content was obtained during the dated check. Reachability does not establish continuing service availability. | 2026-10-31T02:05:10.290046+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 | First-party website observation |
| Historical product description | Polymarket's central limit order book REST and WebSocket API at clob.polymarket.com for order books, prices, order placement and cancellation with signed authentication. | Not captured |
| Name in the historical catalogue | Polymarket CLOB API | Not captured |
| Reported category | Data & APIs | Not stated |
| Reported venues | Polymarket | Not stated |
| Historical pricing statement | Free; maker fee 0, taker fee by category (0.04 to 0.07 rate factor) | Not stated |
| Open-source claim | Source says no | Not stated |
| Execution claim | Source says yes | Not stated |
| Historical status statement | live | Not captured |
| Historical backer statement | Not stated | Not stated |
| Catalogue-reported repository | Not stated | Not stated |
| Catalogue's own check date | 2026-08-27 | Not stated |
| Catalogue snapshot date (UTC) | 2026-09-08 | Not stated |
| Operator name in page metadata | Not captured | Not captured |
| Location in page metadata | Not captured | Not captured |
| Founding date in page metadata | 2020 | Not captured |
| Page-declared statements | 10 | 4 |
| Linked repository records | 0 | 0 |
| Vultax assessment | Not assessed | Not assessed |
| Website | https://docs.polymarket.com/ | https://depthfeed.com/ |
| Evidence | View source (opens in a new tab) Snapshot: Complete profile and history | View source (opens in a new tab) Observed: 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.