--- url: "https://predictiontoolkit.com/tools/pmxt-hosted-api/" publisher: "PredictionToolkit" dateModified: "2026-11-02" --- [← Data APIs]() ![PMXT hosted API logo]() Data API # PMXT hosted API: build on a shared prediction-market catalog PMXT hosted API supplies a common market catalog and API for supported prediction venues, including Polymarket, Kalshi, Limitless and Smarkets. Python and TypeScript clients connect research and supported execution to PMXT infrastructure. [**3.5**/ 5Editorial rating]() [Editorial assessment]() [Open PMXT]() pmxt.dev **Available on:** API **Pricing:** Hosted data is metered in credits: Free, Starter US$29.99/month and Pro US$99.99/month. [Screenshots]() [Explore alternatives]() [Data APIs]() [Historical data]() ## Screenshots and interface Product preview1 / 2 API introduction and client example. ## What is PMXT hosted API? Router provides one search across the hosted catalog. Matching results include relation types and confidence scores, so inspect the underlying contracts before treating a cluster as equivalent outcomes. The shared Event, Market and Outcome schema helps carry that identity into an application. Hosted operation differs from running pmxt-core locally with venue-native access. In particular, the documented hosted write path uses PreFundedEscrow custody. Method coverage depends on both venue and runtime mode; catalog IDs do not always substitute for venue-native IDs. ### Who it is for - Multi-venue research applications. - Teams using hosted catalog and matching infrastructure. - Developers combining discovery with supported execution. ## Data and API methods - **Shared market objects** Use Event, Market and Outcome across venue clients. - **Router search** Search the hosted catalog with one query. - **Matched clusters** Inspect related markets, relation types and confidence. - **Hosted history** Access candles and order-book snapshots under the applicable plan. - **Venue methods** Query markets, read positions and create orders where implemented. - **Hosted writes** The documented trading path uses PreFundedEscrow. - **Python and TypeScript** Choose Python pmxt or TypeScript pmxtjs. ## Integration tasks ### Compare an event Search with Router, retain cluster relation and confidence, then inspect bid/ask data and contract rules before choosing a venue client. ### Scope an integration Start with a small read request, budget REST and WebSocket usage, then follow the hosted trading quickstart for account writes. ## Pricing and total cost Hosted data is metered in credits: Free, Starter US$29.99/month and Pro US$99.99/month. ### Free US$0/month - 25,000 credits/month; 60 requests/minute; 5 WebSocket streams. ### Starter US$29.99/month - 250,000 credits/month; 300 requests/minute; 20 streams. ### Pro US$99.99/month - 1 million credits/month; 1,000 requests/minute; 100 streams. ### Fees and usage costs - One REST call costs 1 credit; one WebSocket message costs 0.1 credits. - Published plans are personal-use only; enterprise access is quoted separately. ## API access and setup 1. Create a hosted API key and install pmxt or pmxtjs. 2. Initialize Router or a venue client and inspect a small market response. 3. Check matching and venue support, then follow the hosted trading guide if adding execution. [Read PMXT documentation]() ## Useful links - [PMXT Discord community]() - [View PMXT plans]() ### What to check - Hosted and self-hosted credentials and custody differ. - Catalog IDs and native venue IDs are not always interchangeable. - Shared method names do not imply universal venue support. - Published data plans permit personal use only. A closer look ## Ratings & reviews Editorial rating **3.5**/ 5 0 user reviews PredictionToolkit editorial ### Our take on PMXT hosted API Shared schemas and hosted matching can shorten a multi-venue prototype. Personal-use licensing, custody and uneven method coverage remain material production constraints. **Assessment criteria:** Task usefulness, documented scope, setup clarity, and access and cost transparency. **Assessment date:** 2026-10-01 **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]() ![PMXT repository overview and supported venue families]() ![PMXT open-source SDK logo]()[PMXT open-source SDK]() SDK**3.5**Editorial Use one Python or TypeScript interface across supported prediction venues, with an explicit hosted or local backend choice. - Language Python · TypeScript Local backend and language clients. ![PolyRouter interactive Markets API tester before request submission]() ![PolyRouter logo]()[PolyRouter]() Data API**3.5**Editorial Query markets, books, trades, price history and standardized sports data through one REST interface. - Access API · MCP Another unified market-data API. ![pmxt-mcp configuration with hosted and local modes]() ![pmxt-mcp logo]()[pmxt-mcp]() SDK**3.0**Editorial An MCP bridge to PMXT data and supported account methods, using your chosen hosted or local backend. - Access MCP PMXT methods for an assistant. ## Guides and workflows - [Kalshi API access]() ## Frequently asked questions about PMXT hosted API ### How does hosted mode differ? It uses PMXT infrastructure and a key; local mode runs pmxt-core with venue-native access. ### What consumes credits? A REST call uses 1 credit; a WebSocket message uses 0.1 credits. ### Does matching prove equal settlement terms? No. Inspect relation types, confidence and the contracts themselves. In this profile