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Assymetrix Data API

Polymarket: Query normalized prediction-market data through one API.

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Polymarket support
Partial
Pricing model
Freemium
Access requirement
API key required
Wallet required
No
Trade execution
None
Last editorial review
Aug 24, 2026

01 · Overview

What is Assymetrix Data API?

Assymetrix provides REST and WebSocket data, history, market discovery, and wallet analytics across several prediction venues. Best for: Developers using normalized live and historical venue data, discovery, and wallet analytics to build cross-venue research, monitoring, or data products. Less suitable for: Users looking for a consumer trading terminal or guaranteed data completeness. Key limitations: Coverage, rate limits, retention, and premium endpoints vary by plan; validate venue-specific schemas before production use.

APIHistorical DataMarket AnalyticsSDK
Explore Assymetrix Data API by taskBuild with Polymarket dataReplay historical marketsDownload Polymarket datasetsResearch a marketMonitor markets

02 · Best for

Who is Assymetrix Data API best for?

Best for

Developers using normalized live and historical venue data, discovery, and wallet analytics to build cross-venue research, monitoring, or data products.

Not ideal for

Users looking for a consumer trading terminal or guaranteed data completeness.

Limitations

Coverage, rate limits, retention, and premium endpoints vary by plan; validate venue-specific schemas before production use.

03 · Access & execution

How do access and execution work?

Entity typeData infrastructure
Polymarket supportPartial
Pricing modelFreemium
Free planYes
Access requirementAPI key required
Wallet requiredNo
Trade executionNone
Product statusLive
KalshiLimitlessPolymarketPredict.fun

Scope-aware product facts

What to look for

Surfaces

ProductWeb · Supported Evidence

Access modes

Primary workflowAPI key required · wallet No · Not required · Non-custodial Evidence

Execution modes

Primary workflowNone · Not supported · Not required Evidence

Pricing offers

Primary productFree plan · Supported Evidence

Data capabilities

Product data · P&LNot applicable · Not applicable Evidence
Product data · Fee accountingNot applicable · Fees included in P&L Evidence
Product data · Rewards accountingNot applicable · Rewards included in P&L Evidence
Product data · Open positions accountingNot applicable · Open positions included in P&L Evidence
Market data · Order book historyUnknown · Unknown Evidence

04 · Data provenance

Data provenance

Current coverage: CompleteA transparent record of which official sources were checked and when.

Data originVenue API
PnL methodologyNot applicable
Fees includedNot applicable
Rewards includedNot applicable
Open positions includedNot applicable
Order-book historyUnknown
Update cadenceReal time
Review provenance evidence

05 · Public footprint

Public footprint

Current public signals from official platform sources, shown with their observation dates.

Product activity

A transparent record of which official sources were checked and when.

Product statusLive
Tracked by PredAtlas sinceAug 24, 2026
Last editorial reviewAug 24, 2026

06 · Sources & review

How was Assymetrix Data API reviewed?

Documentation strength: ThinA transparent record of which official sources were checked and when.

Sources reviewed · Aug 24, 2026

Official product sources were checked for documented identity, scope, access, pricing and limitations. This is not a security audit, performance test or endorsement.

Official homepagedata.assymetrix.com