odds-analysis

odds-analysis is a skill for Claude Code from PuckAPI/claude-sports-analytics. It costs 107 tokens per session (3,161 once invoked), scanned A, original, MIT.

A betting-odds calculator that changes odds between American, decimal, and fractional formats and removes the bookmaker’s built-in margin to estimate implied probabilities.

In plain words
What is it for?
Use it to convert odds, calculate implied probabilities, compare sportsbook prices, and create no-vig lines for further value or expected-return analysis.
Why use it?
Bookmaker odds include an extra margin, so their raw probabilities do not add up to a fair market view. This helps separate that margin from the estimated chances.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the puckapi-skills plugin — 28 skills shipped together

Good fit Use it to convert odds, calculate implied probabilities, compare sportsbook prices, and create no-vig lines for further value or expected-return analysis.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/puckapi/claude-sports-analytics/odds-analysis
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add PuckAPI/claude-sports-analytics --skill odds-analysis
Clone the repo
git clone --depth 1 https://github.com/PuckAPI/claude-sports-analytics

Made for: Claude Code.

Or install puckapi-skills, the plugin that ships this one along with the rest of its 28 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for odds-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/puckapi/claude-sports-analytics/odds-analysis.svg)](https://agentmods.dev/skills/puckapi/claude-sports-analytics/odds-analysis)
Your own site
<a href="https://agentmods.dev/skills/puckapi/claude-sports-analytics/odds-analysis"><img src="https://agentmods.dev/badge/skills/puckapi/claude-sports-analytics/odds-analysis.svg" alt="Measured on agentmods" height="20"></a>
Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,161 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00107 $0.03161
Opus 5 $0.00053 $0.01580
Sonnet 5 $0.00021 $0.00632
Haiku 4.5 $0.00011 $0.00316

Measured 7d ago against content hash 1e220a8f7ba0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

odds-analysis scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/odds-analysis/SKILL.md · 315 lines

How it starts

The opening of the file, as written. The whole thing — 315 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Odds Analysis

Default data tool: PuckAPI (puckapi-tool). Use get_odds (10 credits) for current odds data. Use get_line_movement (25 credits) for historical line movement -- most expensive operation. For your own odds CSV, skip the tool and work with the file directly.

You are an expert in betting odds mathematics. Your goal is to extract true implied probabilities from bookmaker odds by removing the embedded margin (vig). This is prerequisite knowledge for any downstream edge detection or expected value calculation.

When to Use

  • User has betting odds and wants to know the "true" implied probability
  • User wants to compare odds across multiple sportsbooks
  • User asks about vig, juice, margin, or overround
  • User wants to build a no-vig line from two-sided market odds
  • User needs odds in a different format (American, decimal, fractional)

When NOT to Use

  • Viewing or exploring current odds -- see odds-explorer
  • Comparing model probabilities against market to find edges -- see edge-detection
  • Model output calibration -- see probability-calibration
  • Tracking line movement over time -- the get_line_movement endpoint covers that; this skill covers the math

Commands Available

Command What It Does Credits
get_odds Current odds snapshot for a game 10/game
get_line_movement Historical line movement for a game 25/game

Commands That Do NOT Exist

Not Available Use Instead
get_no_vig_line Compute from get_odds using devig methods below
get_true_probability Compute from get_odds using Shin or multiplicative method
get_historical_odds Use get_odds with a past game date
compare_books Fetch get_odds per book and compare manually

Credit Usage

Operation Credits Notes
Odds snapshot (one game) 10 Returns all available books
Line movement (one game) 25 Full price history, use sparingly
Full season odds (backtest) ~820-1,230 82 NHL games * 10cr each

Read the full file on GitHub · 315 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 315 lines · 107 tokens per session scan A 1e220a8f7ba0

Subscribe to this mod's changes

odds-analysis is a skill published in the GitHub repository PuckAPI/claude-sports-analytics (2 stars, last pushed 3mo ago), licensed MIT. It adds 107 tokens to every session and 3,161 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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