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PropLine

Every prop graded against the real box score — the thing other odds APIs don't do. Real-time lines, cross-book +EV, and webhooks across 54 sports.

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Overview

The player props API that grades every Over/Under against the real box score — won, lost, or push — not just live odds. Real-time lines across 54 sports, cross-book +EV, and webhooks. 1,000 free requests/day, no credit card.

AI summary

PropLine is a player props API that grades every Over/Under against actual game results, offering real-time odds from multiple sportsbooks and exchanges across 54 sports. It provides features like cross-book +EV, webhooks, and a generous free tier, making it suitable for developers building betting tools.

Who Is It For

Best for

Developers looking to integrate sports betting data into applications, particularly those focused on player props and real-time odds.

Not for

Casual bettors or users seeking a simple, user-friendly interface without programming requirements.

Strengths & Weaknesses

Biggest strength

The ability to grade props against real box scores, providing a unique level of accuracy and detail that other odds APIs may lack.

Biggest weakness

Pricing details beyond the free tier are unclear, which may limit transparency for potential users (AI-inferred; may be outdated – founders can correct this).

Classification

Likely competitors
OddsAPITheOddsAPIBetfair APISportsRadar

Alternatives to PropLine

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How we sourced this: Observed fields () were crawled from https://prop-line.com/ and are stated as fact. AI-inferred fields () were generated by gpt-4o-mini and are always labelled – never presented as measured fact. Last updated: 17 August 2026. Is this your tool? Claim it to edit and get a do-follow badge.