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 | Manifold API VK-4423af5add87d17a | Adjacent VE-0b95f6fcc0c443b2 |
|---|---|---|
| Product overview | Manifold's play-money market API at api.manifold.markets with key auth, bet and limit order endpoints, WebSocket updates and a 500 requests per minute limit. | Adjacent publishes prediction-market indices, reference rates and related news. Its page includes definitions that help readers interpret the published measures. |
| Research classification | Data & APIs | Data & APIs |
| Resource type | Documentation | Product or service |
| Platforms named in product context | Manifold | Not established |
| Documented capabilities | Not established | Not established |
| Latest sourced pricing | Free; market creation and API comments cost mana | Free public API; other tiers not published |
| Developer and product resources | Documentation: https://docs.manifold.markets/; Linked source repository: https://github.com/manifoldmarkets/manifold/ | About the product: https://adjacent.markets/about |
| Website research check | 2026-10-31T02:08:00.685880+00:00; Public page content was obtained during the dated check. Reachability does not establish continuing service availability. | 2026-10-31T02:04:53.479795+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 | Historical catalogue only | First-party website observation |
| Historical product description | Manifold's play-money market API at api.manifold.markets with key auth, bet and limit order endpoints, WebSocket updates and a 500 requests per minute limit. | Publishes prediction market indices, reference rates and related news, exposed through a public JSON API (15 minute delay, no auth), an MCP server and llms.txt for agents. |
| Name in the historical catalogue | Manifold API | Adjacent News |
| Reported category | Data & APIs | Data & APIs |
| Reported venues | Manifold | Not stated |
| Historical pricing statement | Free; market creation and API comments cost mana | Free public API; other tiers not published |
| 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 | 2 |
| Linked repository records | 0 | 0 |
| Vultax assessment | Not assessed | Not assessed |
| Website | https://docs.manifold.markets/api | https://adjacent.markets/ |
| 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.