--- url: "https://predictiontoolkit.com/tools/clearmarket/" publisher: "PredictionToolkit" dateModified: "2026-11-02" --- [← Resolution]() Research tool # ClearMarket: inspect what a contract resolves on ClearMarket is an open reference layer for prediction-market definitions, resolution sources and related questions. Its website, REST API and read-only MCP server support research across Polymarket and Kalshi rather than execution-sensitive price monitoring. [**3.5**/ 5Editorial rating]() [Editorial assessment]() [Open ClearMarket repository]() github.com **Available on:** Web · API · MCP **Pricing:** [See plans and costs ↓]() [Screenshots]() [Explore alternatives]() [Resolution]() [Data APIs]() +1 more [MCP servers]() ## Screenshots and interface Product preview1 / 2 Reference API and MCP introduction. ## What is ClearMarket? A Resolution Clarity Grade (RCG) assigns A, B or C to the clarity of settlement terms. Named sources and provenance help explain that assessment, including the classified absence of a source. The grade is about contract interpretation, not the probability of a winning outcome. Cross-venue research uses shared question IDs and also\_on links while each event stays a single-venue bundle. The catalyst calendar adds relevant real-world events. Inspect live API schemas because older reference specimens can combine events differently; prices refresh hourly. ### Who it is for - Researchers comparing contract definitions. - Risk teams reviewing source clarity. - Developers building read-only research agents. ## Features and coverage - **Resolution grades** Read A/B/C clarity assessments for markets. - **Named resolution sources** Inspect declared sources, provenance or classified absence. - **Cross-venue questions** Follow shared question IDs and also\_on links. - **Catalyst calendar** Find real-world events associated with upcoming market changes. - **Keyless public API** Search and retrieve event and market records. - **Read-only MCP** Use event, market, catalyst and signal tools in supported clients. - **Open reference materials** Inspect schemas, database definitions, enrichment scripts and specimens. ## Workflows with ClearMarket ### Review a settlement question Find the market, inspect grade and provenance, then read original rules for remaining ambiguity. ### Compare venue definitions Follow question links and inspect the separate venue events. ### Build a research agent Connect the HTTP MCP endpoint and request concise event detail for large market bundles. ## Pricing and total cost The read-only site, REST API and MCP endpoint are open without signup or a key. The repository is MIT-licensed. ## Getting started **Before you start:** Prices update hourly. 1. Search the public API or website and open an event/market record. 2. Inspect source, grade and catalyst dates; follow venue-question links. 3. For agents, connect the documented HTTP MCP endpoint. Hourly prices are unsuitable as an execution-price feed. [Read the resolution methodology]() ## Useful links ### What to check - Prices update hourly. - RCG measures clarity, not outcome probability. - Events are single-venue; shared question IDs link venues. - Prefer Polymarket condition ID where URL lookup is unsupported or best-effort. - Older specimens can use a combined-event schema unlike the live API. A closer look ## Ratings & reviews Editorial rating **3.5**/ 5 0 user reviews PredictionToolkit editorial ### Our take on ClearMarket Open access and explicit clarity grades make the reference easy to inspect. Hourly prices and differing specimen schemas limit execution-sensitive use. Based on documented features, setup and access terms. [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]() ![Official Polymarket Gamma API market-discovery documentation]() ![Polymarket Gamma API logo]()[Polymarket Gamma API]() Data API**4.0**Editorial Discover contracts and their identifiers before querying executable prices or building a searchable catalog. - Access API Original market discovery and metadata. ![ARBITER unified API entry page and sample market view]() ![ARBITER logo]()[ARBITER]() Data API**3.5**Editorial Query normalized markets, historical books, wallet analytics and possible event matches across Polymarket and Kalshi. - Access API Cross-venue data and historical prices. ![UMA rocks delegation features and wallet-connect entry]() ![UMA rocks logo]()[UMA rocks]() Research tool**3.0**Editorial Manage UMA voting delegation, rewards and individual dispute overrides from a web dashboard. - Access Web UMA voting delegation and dispute participation. ## Frequently asked questions about ClearMarket ### Does A mean a likely winner? No. It grades resolution clarity. ### Are credentials required? Public read-only interfaces are keyless. ### Why are matching markets in separate events? Each venue keeps its own event structure; shared question IDs provide the link. ### Can MCP place orders? Its documented tools are read-only. In this profile