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.

Betfair publishes 7 API contracts indexed on the APIs.io network, including Exchange Stream API, Accounts API, Betting API, and 4 more. Tagged areas include Betting Exchange, Sports Betting, Wagering, Trading, and Market Data.

The Betfair catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Betfair’s developer surface includes authentication, documentation, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.5/100 thin ▬ flat Agent 22/100 agent aware saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Betting ExchangeSports Betting Wagering Trading Market Data JSON-RPC Streaming Sports

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 28.5/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 4.5 / 15

Access Clarity 1.0 / 15

Operational Transparency 1.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/betfair/"><img src="https://apis.io/badge/betfair/card.svg" alt="Betfair on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 29.8 — up to +14.0 composite points Ask about this →
Operational Transparency scores 11.9 — up to +11.5 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/betfair/apis.yml: open an issue on github.com/api-evangelist/betfair to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Gaming, Entertainment and Sports	regulated	36.4 (thin)	-	-
Sports Betting and iGaming (licensed operators and suppliers)	regulated	36.4 (thin)	-	-
APIs.guru OpenAPI Directory (API definition directory)	regulated	36.4 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

JSON RPC

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

AsyncAPI

measured — observed by APIs.io (published)

APIs 7

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 for all 7

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Betfair Exchange API (API-NG) Accounts API

OPEN COLLECTION

Betfair Exchange API (API-NG) Accounts Betting API

OPEN COLLECTION

Betfair Exchange API (API-NG) Accounts Heartbeat API

OPEN COLLECTION

Betfair Exchange API (API-NG) Accounts Historic Data API

OPEN COLLECTION

Betfair Exchange API (API-NG) Accounts Identity API

OPEN COLLECTION

Betfair Exchange API (API-NG)

OPEN COLLECTION

Betfair API pricing

Not yet checked against Betfair's own pricing page. Compiled by API Evangelist on 2026-07-03 from support.developer.betfair.com/hc/en-us/articles/115003864...; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Delayed Application Key free	—
Live Application Key paid	—
Exchange Commission usage	—
Historic Data Packages paid	—

Plan details, limits and sources →

Rate limits

Market Data Request Weighting: 200 max per request weight
Betting REST/JSON-RPC Requests: not published (monitored) requests
placeOrders Instructions: bounded per request instructions

Compiled by API Evangelist, not yet checked against Betfair's documentation. All 7 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Betfair Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Betfair Rate Limits

7 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Betfair Finops

FINOPS

Event Specifications 1

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: ...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Betfair — asyncapi rules

7 rules · 6 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Betfair Authentication

apiKey · 2 schemes

SECURITY

Betfair Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Betfair Agentic Access

27 operations · 8 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: betfair
url: https://raw.githubusercontent.com/api-evangelist/betfair/refs/heads/main/apis.yml
name: Betfair
kind: company
description: 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.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - betfair/stream-api-sample-code
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/betfair.png
tags:
- Betting Exchange
- Sports Betting
- Wagering
- Trading
- Market Data
- JSON-RPC
- Streaming
- Sports
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.23'
apis:
- aid: betfair:betfair-exchange-stream-api
  name: Betfair Exchange Stream API
  tags:
  - Streaming
  - Real-Time
  - Market Data
  - TCP
  tags_raw:
  - Streaming
  - Real Time
  - Market Data
  - TCP
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Exchange+Stream+API
  baseURL: tcp+ssl://stream-api.betfair.com:443
  properties:
  - url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Exchange+Stream+API
    type: Documentation
  - url: https://github.com/betfair/stream-api-sample-code
    type: SourceCode
  - url: asyncapi/betfair-asyncapi.yml
    type: AsyncAPI
  description: 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 JSON message per line) - NOT WebSocket; attempted WebSocket connections are refused.
    Clients authenticate then send marketSubscription / orderSubscription requests and receive market change (mcm) and order
    change (ocm) messages plus connection, status, and heartbeat frames.
- aid: betfair:betfair-vendor-api
  name: Betfair Vendor API
  tags:
  - Vendor
  - Affiliates
  - OAuth
  - Web App
  - Authentication
  tags_raw:
  - Vendor
  - Affiliate
  - OAuth2
  - Web Apps
  - Authentication
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Web+Vendor+Facility
  baseURL: https://identitysso.betfair.com
  properties:
  - url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Web+Vendor+Facility
    type: Documentation
  description: 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 access and refresh tokens and act on a Betfair customer's
    behalf, with the vendor able to charge subscriptions via application subscription tokens.
- aid: betfair:betfair-accounts-api
  name: Betfair Accounts API
  description: AccountAPING - account funds, details, statement, and app keys.
  humanURL: https://developer.betfair.com/en/get-started/
  baseURL: https://api.betfair.com/exchange/betting
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/betfair-accounts-api-openapi.yml
  - type: Documentation
    url: https://developer.betfair.com/exchange-api/
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Betting+API
  - type: PostmanCollection
    url: collections/betfair.postman_collection.json
  - type: OpenCollection
    url: collections/betfair.opencollection.json
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Accounts+API
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Heartbeat+API
  - type: Documentation
    url: https://developer.betfair.com/historical-data-services-api/
  - type: Specification
    url: https://historicdata.betfair.com/Betfair-Historical-Data-Feed-Specification.pdf
- aid: betfair:betfair-betting-api
  name: Betfair Betting API
  description: SportsAPING - market navigation, prices, and bet placement.
  humanURL: https://developer.betfair.com/en/get-started/
  baseURL: https://api.betfair.com/exchange/betting
  tags:
  - Betting
  properties:
  - type: OpenAPI
    url: openapi/betfair-betting-api-openapi.yml
  - type: Documentation
    url: https://developer.betfair.com/exchange-api/
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Betting+API
  - type: PostmanCollection
    url: collections/betfair.postman_collection.json
  - type: OpenCollection
    url: collections/betfair.opencollection.json
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Accounts+API
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Heartbeat+API
  - type: Documentation
    url: https://developer.betfair.com/historical-data-services-api/
  - type: Specification
    url: https://historicdata.betfair.com/Betfair-Historical-Data-Feed-Specification.pdf
- aid: betfair:betfair-heartbeat-api
  name: Betfair Heartbeat API
  description: HeartbeatAPING - dead man's switch that cancels unmatched bets.
  humanURL: https://developer.betfair.com/en/get-started/
  baseURL: https://api.betfair.com/exchange/betting
  tags:
  - Heartbeat
  properties:
  - type: OpenAPI
    url: openapi/betfair-heartbeat-api-openapi.yml
  - type: Documentation
    url: https://developer.betfair.com/exchange-api/
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Betting+API
  - type: PostmanCollection
    url: collections/betfair.postman_collection.json
  - type: OpenCollection
    url: collections/betfair.opencollection.json
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Accounts+API
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Heartbeat+API
  - type: Documentation
    url: https://developer.betfair.com/historical-data-services-api/
  - type: Specification
    url: https://historicdata.betfair.com/Betfair-Historical-Data-Feed-Specification.pdf
- aid: betfair:betfair-historic-data-api
  name: Betfair Historic Data API
  description: Download purchased historical exchange market data.
  humanURL: https://developer.betfair.com/en/get-started/
  baseURL: https://api.betfair.com/exchange/betting
  tags:
  - Historic Data
  properties:
  - type: OpenAPI
    url: openapi/betfair-historic-data-api-openapi.yml
  - type: Documentation
    url: https://developer.betfair.com/exchange-api/
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Betting+API
  - type: PostmanCollection
    url: collections/betfair.postman_collection.json
  - type: OpenCollection
    url: collections/betfair.opencollection.json
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Accounts+API
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Heartbeat+API
  - type: Documentation
    url: https://developer.betfair.com/historical-data-services-api/
  - type: Specification
    url: https://historicdata.betfair.com/Betfair-Historical-Data-Feed-Specification.pdf
- aid: betfair:betfair-identity-api
  name: Betfair Identity API
  description: Session login, keep-alive, and logout via Betfair identity SSO.
  humanURL: https://developer.betfair.com/en/get-started/
  baseURL: https://api.betfair.com/exchange/betting
  tags:
  - Identity
  properties:
  - type: OpenAPI
    url: openapi/betfair-identity-api-openapi.yml
  - type: Documentation
    url: https://developer.betfair.com/exchange-api/
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Betting+API
  - type: PostmanCollection
    url: collections/betfair.postman_collection.json
  - type: OpenCollection
    url: collections/betfair.opencollection.json
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Accounts+API
  - type: APIReference
    url: https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Heartbeat+API
  - type: Documentation
    url: https://developer.betfair.com/historical-data-services-api/
  - type: Specification
    url: https://historicdata.betfair.com/Betfair-Historical-Data-Feed-Specification.pdf
common:
- type: AgenticAccess
  url: agentic-access/betfair-agentic-access.yml
- type: DomainSecurity
  url: security/betfair-domain-security.yml
- type: Authentication
  url: authentication/betfair-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/betfair
- type: Website
  url: https://www.betfair.com
- type: Documentation
  url: https://developer.betfair.com/
- type: Plans
  url: plans/betfair-plans-pricing.yml
- type: RateLimits
  url: rate-limits/betfair-rate-limits.yml
- type: FinOps
  url: finops/betfair-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Betfair API — frequently asked questions

Does Betfair have an API?

Yes. APIs.io lists 7 APIs from Betfair, including Betfair Exchange Stream API, Betfair Vendor API and Betfair Accounts API, and 4 more.

Is there an OpenAPI specification for the Betfair API?

Yes. APIs.io indexes 5 OpenAPI specifications for Betfair, each linked for download from this page.

How do I authenticate with the Betfair API?

Betfair uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Betfair Authentication.

How much does the Betfair API cost?

APIs.io lists 4 pricing plans for Betfair, with each plan's price, limits and inclusions under Pricing on this page.

Is the Betfair API ready for AI agents?

Betfair has a Kin Score of 28.5 out of 100 (thin) and an Agent Readiness score of 22.4 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/betfair"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/betfair/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/betfair/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.