Prediction-market directory
Compare projects
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 | Opinion Open API VK-744aa046aa5ed15f | Adanos Market Sentiment API VK-505c78328bb60175 |
|---|---|---|
| Product overview | Opinion Labs' HTTP API at openapi.opinion.trade for BNB Chain markets, prices, order books and history, with one API key shared by WebSocket and CLOB SDKs. | REST API returning sentiment and attention signals for stock and crypto tickers, with a Polymarket endpoint alongside Reddit, X and news sources. Includes a CLI for traders and agents. |
| Research classification | Data & APIs | Data & APIs |
| Resource type | Documentation | Product or service |
| Platforms named in product context | Opinion | Polymarket |
| Documented capabilities | Developer SDK: A software development kit or language client is described. | Not established |
| Latest sourced pricing | Free; public 5 req/s, keyed 15 req/s | Free + Hobby $29/mo + Professional $299/mo |
| Developer and product resources | About the product: https://docs.opinion.trade/about-opinion/about-opinion; Linked source repository: https://github.com/opinion-labs/opinion-clob-sdk | Not captured |
| Website research check | 2026-10-31T02:08:09.376002+00:00; Public page content was obtained during the dated check. Reachability does not establish continuing service availability. | 2026-10-31T02:08:01.452242+00:00; The recorded URL redirected to a different host. No automatic product or company identity merge was made. |
| 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 | Historical catalogue only | Historical catalogue only |
| Historical product description | Opinion Labs' HTTP API at openapi.opinion.trade for BNB Chain markets, prices, order books and history, with one API key shared by WebSocket and CLOB SDKs. | REST API returning sentiment and attention signals for stock and crypto tickers, with a Polymarket endpoint alongside Reddit, X and news sources. Includes a CLI for traders and agents. |
| Name in the historical catalogue | Opinion Open API | Adanos Market Sentiment API |
| Reported category | Data & APIs | Data & APIs |
| Reported venues | Opinion | Polymarket |
| Historical pricing statement | Free; public 5 req/s, keyed 15 req/s | Free + Hobby $29/mo + Professional $299/mo |
| Open-source claim | Source says no | Source says no |
| Execution claim | Source says yes | Source says no |
| Historical status statement | live | live |
| Historical backer statement | Not stated | Not stated |
| Catalogue-reported repository | Not stated | 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 | 0 | 0 |
| Linked repository records | 0 | 0 |
| Vultax assessment | Not assessed | Not assessed |
| Website | https://docs.opinion.trade/developer-guide/opinion-open-api/overview | https://adanos.org/ |
| 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.