What is polymarket-odds-scanner?

polymarket-odds-scanner is an open-source comparison tool for finding sports price gaps between Polymarket and external sportsbook feeds. Best for: Analysts researching cross-market discrepancies without automatic execution. Less suitable for: Users who expect guaranteed arbitrage, identical contracts or complete bookmaker coverage. Key limitations: Matching contracts can differ in rules and timing; odds feeds, fees, limits, latency and account eligibility can erase an apparent gap. The documented monitor runs on a 30-minute schedule and can use a two-hour cache. Price-gap output is research, not proof that both legs can be filled together after fees and eligibility checks.

ArbitrageMarket Analytics

Who is polymarket-odds-scanner best for?

Best for

Analysts researching cross-market discrepancies without automatic execution.

Not ideal for

Users who expect guaranteed arbitrage, identical contracts or complete bookmaker coverage.

Limitations

Matching contracts can differ in rules and timing; odds feeds, fees, limits, latency and account eligibility can erase an apparent gap.

How do access and execution work?

Entity typeTool / application

Polymarket supportPolymarket native

Pricing modelFree · Scope and terms apply

Free planYes

Access requirementOpen access

Wallet requiredNo

Trade executionNone

Product statusLive

OtherPolymarket

Scope-aware product facts

What to look for

Surfaces

ProductUnknown · Supported Evidence

Access modes

Primary workflowOpen access · wallet No · Not required · Non-custodial Evidence

Execution modes

Primary workflowNone · Not supported · Not required Evidence

Pricing offers

Primary productFree plan · $0 · Supported · Default ESPN feed requires no key; optional external odds providers may require keys and separate payment. 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 historyNot applicable · Not applicable Evidence

Data provenance

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

Data originMixed sources

PnL methodologyNot applicable

Fees includedNot applicable

Rewards includedNot applicable

Open positions includedNot applicable

Order-book historyNot applicable

Update cadencePeriodic

Review provenance evidence

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 sinceSep 8, 2026

Last editorial reviewNov 6, 2026

Latest public updateJun 21, 2026

Official documentationYes

Public repositoryYes

How was polymarket-odds-scanner reviewed?

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

Sources reviewed · Nov 6, 2026

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

polymarket-odds-scanner