Answer · No-vig · Fair odds

No-vig fair odds API

Updated 9 November 2026 · PinnFeed · 1 min read

Answer: PinnFeed attaches fair (no-vig decimal) and fairProb to every outcome, and margin to every market, using the multiplicative method. Raw decimal / american stay available so you can apply power or Shin yourself. Available on REST and WebSocket for plans that include those markets (Hobby+ for real-time REST fair fields on main markets; Builder for all markets + push).

Formula (already applied server-side)#

implied_i  = 1 / decimal_i
margin     = Σ implied_i − 1
fairProb_i = implied_i / Σ implied_j
fair_i     = 1 / fairProb_i

Outcomes of one market sum to fairProb = 1. Docs: schema.

Read fair prices over REST#

curl -sS -H "x-api-key: $PINNFEED_KEY" \
  "https://pinnfeed.io/v1/odds?sport=soccer&market=moneyline&main=true&limit=5" \
  | jq '.events[0].markets[0] | {margin, outcomes: [.outcomes[] | {name, decimal, fair, fairProb}]}'

Example shape (illustrative numbers):

{
  "margin": 0.041,
  "outcomes": [
    { "name": "home", "decimal": 2.05, "fair": 2.14, "fairProb": 0.467 },
    { "name": "draw", "decimal": 3.40, "fair": 3.55, "fairProb": 0.282 },
    { "name": "away", "decimal": 3.70, "fair": 3.86, "fairProb": 0.251 }
  ]
}

Use for value#

Against a soft-book decimal soft: EV = soft / fair − 1 (or soft × fairProb − 1). Full walkthrough: value betting guide.

Trial CTA#

Pricing — Free (delayed), Hobby (real-time REST), Builder (WebSocket, €99/mo). 3-day trial on paid plans; card required, charged after day 3 unless cancelled.

Questions people ask#

Which method is used?#

Multiplicative (proportional). Raw prices are always present if you prefer another method.

Are fair odds on Free?#

Yes on the markets Free returns (main markets, 30 s delay). Depth and specials need Builder.

Is this educational content for adults?#

Yes (18+). Fair odds are a statistical tool, not a tip or a promise of profit.