--- url: "https://predictiontoolkit.com/tools/adjacent-news/" publisher: "PredictionToolkit" dateModified: "2026-11-03" --- [← Aggregators]() ![Adjacent logo]() Research tool # Adjacent: Event-Contract Indices and Market Briefings Adjacent organizes prediction-market research around benchmarks, thematic indices, reference rates and news. Its web, email and API entry points cover Polymarket and multiple prediction markets; the methodology explains what each benchmark measures. [**3.5**/ 5Editorial rating]() [Editorial assessment]() [Open Adjacent]() adjacent.markets **Available on:** Web · API · Email **Pricing:** [See plans and costs ↓]() [Screenshots]() [Explore alternatives]() [Aggregators]() [Dashboards]() +4 more [Data APIs]() [News & media]() [Economic research]() [Politics & elections]() ## Screenshots and interface Product preview1 / 2 Daily and weekly market briefings alongside editorial coverage. ## What is Adjacent? A thematic basket of contracts does not automatically represent the probability of a single event. Probability-based indices use a 50–150 scale: subtract 50 from the index level to obtain the implied win probability. Total-return indices start at 100 and measure cumulative return; that probability conversion does not apply to them. Points indices use their own methodology. Reference rates are comparison benchmarks, not tradable contracts. Read the construction methodology and governance documents for the ticker you are examining. If a composite contains child indices, inspect the effective weights of its underlying leaf markets before comparing venue outcomes. Public index, reference-rate and market catalogs use delayed snapshots rather than live execution feeds: the public snapshot tables refresh every 15 minutes, and the snapshot tier has a separate 15-minute delay. ### Who it is for - Researching a theme across several event contracts. - Adding prediction-market context to news coverage. - Evaluating benchmark methodology or a custom-index project. ## Research coverage and methods - **Thematic indices** Explore baskets that group event contracts around a common subject. - **Categorical and return benchmarks** Distinguish the topic an index tracks from the method used to construct it and measure returns. - **Reference rates** Use dedicated reference-rate views alongside the index and market research. - **Research dashboards** Move between aggregate research products and the underlying events and markets. - **Daily and weekly briefings** Follow probability moves, volume, volatility and catalysts in daily or weekly editorial coverage. - **Methodology documents** Consult the construction methodology and governance documents before interpreting or comparing an index. - **API and custom indices** Use the data-API entry point or inquire about an index built for a particular subject. - **Different index scales** For probability-based indices on the 50–150 scale, subtract 50 to obtain implied win probability. Total-return indices start at 100 and measure cumulative return; points indices follow their own methods. - **Delayed public snapshots** Public index, reference-rate and market-catalog data use a delayed snapshot tier. The public tables refresh every 15 minutes, while the data have a 15-minute delay. ## Research tasks ### Build a thematic watchlist Choose an index, read its construction methodology, and inspect the underlying events and market news to investigate changes. ### Prepare a market briefing Start with the daily or weekly coverage, identify the relevant contract or theme, and use a research dashboard to add market context. ### Evaluate a benchmark product Establish what the chosen index measures and how its reference rate is defined. Those definitions give you the basis for requesting the relevant API access or describing the custom index you need. ### Interpret a composite index Identify the index type and read the ticker's methodology. If it includes child indices, inspect the effective leaf-market weights and compare the underlying venue outcomes; do not treat every index level as a probability. ## Pricing and total cost The public pages offer index discovery and editorial coverage. API access and custom-index work have separate inquiry paths; the main page does not publish a complete fee schedule. ## Research inputs and access 1. Open Indices or Dashboards and select the topic you want to research. 2. Read the methodology that applies to the selected index or reference rate. 3. Use Markets and News to investigate moves in the underlying contracts. 4. Subscribe to the daily or weekly coverage if that cadence suits your research. 5. Inquire separately about API access or a custom index. [Read index scales and construction methods]() ## Useful links ### What to check - Index constituents and interpretation depend on the construction methodology. - The reviewed research and benchmark entry points are separate from order entry. - Public snapshot tables refresh every 15 minutes, and the data tier has a separate 15-minute delay. A closer look ## Ratings & reviews Editorial rating **3.5**/ 5 0 user reviews PredictionToolkit editorial ### Our take on Adjacent The thematic products and documented methods give market narratives a useful research structure. Interpret a constructed index separately from an individual event probability, and check the commercial terms before relying on API access. **Assessment criteria:** Task usefulness, documented scope, setup clarity, and access and cost transparency. **Assessment date:** 2026-10-05 **Documentation reviewed:** 2026-10-01 Documentation-based assessment. [How we rate]() ### User reviews 0 The main score switches to user ratings after 5 published reviews. **Be the first to share your experience** A specific example helps the next person choose the right tool. ## Related tools [Browse category]() ![Election Betting Odds probabilities and electoral map]() [Election Betting Odds]() Research tool**3.5**Editorial Election research linking cross-venue probability summaries with bid/ask ranges, past race movements and state maps. - Access Web Compare a narrower overview focused on election probabilities. ![FORS public market cards with source-venue labels]() ![FORS logo]()[FORS]() Trading terminal**3.5**Editorial Compare venue-labelled events and investigate analytics and copy controls before assessing execution access and costs. - Access Web Also in Prediction Market Aggregators. ![Prophet Arena question input and model leaderboard entry]() ![Prophet Arena logo]()[Prophet Arena]() Research tool**3.5**Editorial A live AI forecasting benchmark with resolved-event scores, comparable-event standings and inspectable research traces. - Access Web Compare model forecasts and scored outcomes across public forecasting questions. ## Frequently asked questions about Adjacent ### Is Adjacent only a newsletter? No. The reviewed offering also includes indices, reference rates, research dashboards and data-access entry points. ### Can I request an index for my own topic? Adjacent provides a separate inquiry path for custom-index work. ### How should I interpret an index level? Read that index's methodology. A thematic benchmark and a return-based product can measure different things. ### Can I place Polymarket orders through it? The reviewed entry points focus on research and data, rather than order placement. ### Can every index level be converted into a probability? No. Subtracting 50 applies only to probability-based indices. Total-return and points indices use different units and methods, and reference rates are comparison benchmarks rather than tradable contracts. In this profile