Betfair
Betfair operates the world's largest online betting exchange, where customers back and lay outcomes against each other rather than against a bookmaker. The Betfair Exchange API (API-NG) gives automated clients programmatic access to the exchange - navigating markets, retrieving live prices, placing and managing bets, and reading account state. It is exposed as lightweight JSON-RPC and REST operations over HTTPS under https://api.betfair.com/exchange (the Betting, Accounts, and Heartbeat APIs), with a separate real-time Exchange Stream API delivered over a raw SSL/TCP socket (CRLF-delimited JSON, not WebSocket) for low-latency market and order updates. A Historic Data API and a licensed Vendor (affiliate) API round out the platform. Auth combines an Application Key with a session token (ssoid) obtained from Betfair's identity SSO login.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Betfair the way a machine reads it — 22 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Betfair scores 40.5/100 (developing), with a separate agent-readiness read of 23/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Betfair's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/betfair/"
title="Betfair on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/betfair.svg"
alt="Betfair Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/betfair/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/betfair/"
title="Betfair on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/betfair/card.svg"
alt="Betfair Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Betfair
Each block below is one kind of artifact we hold for Betfair. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 7
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Betfair Exchange Stream API
Low-latency, subscription-based push of market and order changes over a persistent raw SSL/TCP socket to stream-api.betfair.com:443. The protocol is CRLF-delimited JSON (one JSO...
Betfair Vendor API
The Web Vendor Facility for licensed software vendors building web-based betting applications. Uses an OAuth2-style authorization flow so a vendor's web application can obtain a...
Betfair Accounts API
AccountAPING - account funds, details, statement, and app keys.
Betfair Betting API
SportsAPING - market navigation, prices, and bet placement.
Betfair Heartbeat API
HeartbeatAPING - dead man's switch that cancels unmatched bets.
Betfair Historic Data API
Download purchased historical exchange market data.
Betfair Identity API
Session login, keep-alive, and logout via Betfair identity SSO.
Scroll within the panel for all 7 ·
Open Collections 7
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONBetfair Exchange API (API-NG) Accounts API
OPEN COLLECTIONBetfair Exchange API (API-NG) Accounts Betting API
OPEN COLLECTIONBetfair Exchange API (API-NG) Accounts Heartbeat API
OPEN COLLECTIONBetfair Exchange API (API-NG) Accounts Historic Data API
OPEN COLLECTIONBetfair Exchange API (API-NG) Accounts Identity API
OPEN COLLECTIONBetfair Exchange API (API-NG)
OPEN COLLECTIONScroll within the panel for all 7 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Betfair Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Betfair Finops
FINOPSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Betfair Exchange Stream API (SSL/TCP)
AsyncAPI 2.6 description of the Betfair **Exchange Stream API** - Betfair's low-latency, subscription-based push channel for market and order changes. IMPORTANT TRANSPORT NOTE: ...
ASYNCAPISpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Betfair API Rules
SPECTRALSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Betfair — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/betfair · machine-readable index on apis.io
This is an independent, third-party profile of Betfair, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.