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.
npx skills add DanielTomaro13/sportsdata-agents --skill vig_removalgit clone --depth 1 https://github.com/DanielTomaro13/sportsdata-agentsWrote 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.
[](https://agentmods.dev/skills/danieltomaro13/sportsdata-agents/vig_removal)<a href="https://agentmods.dev/skills/danieltomaro13/sportsdata-agents/vig_removal"><img src="https://agentmods.dev/badge/skills/danieltomaro13/sportsdata-agents/vig_removal/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/danieltomaro13/sportsdata-agents/vig_removal"><img src="https://agentmods.dev/badge/skills/danieltomaro13/sportsdata-agents/vig_removal.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00022 | $0.00347 |
| Opus 5 | $0.00011 | $0.00173 |
| Sonnet 5 | $0.00004 | $0.00069 |
| Haiku 4.5 | $0.00002 | $0.00035 |
Grade A, and why
vig_removal 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 11d 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.
What it actually says
Removing the vig
A bookmaker's quoted prices imply probabilities that sum to MORE than 1 — the excess is the margin (vig / overround / juice). To estimate what the market really thinks, remove it.
Procedure
- Collect the decimal odds for every selection in the same market at one bookmaker (all runners / both sides). Partial markets give wrong answers.
- Call the
vig_removaltool with those prices. It returns:overround— e.g. 1.052 means a 5.2% marginfair_probabilities— each selection's implied probability normalised to sum to 1
- To compare value across books: get the fair probability from the sharpest market
available (Pinnacle / Betfair exchange when present — lowest overround), then call
expected_valuewith that probability against each book's offered odds.
Rules
- Never average odds across books before removing vig — remove per book, then compare.
- A two-way 1.90/1.90 market is ~5.26% vig and 0.50/0.50 fair — a useful sanity check.
- If you cannot get the FULL market at one book, say so; do not normalise a partial set.
- Report the overround alongside any "fair" number so the user sees the margin you removed.
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.
- 11d ago First seen · 26 lines · 22 tokens per session scan A 6f210a471ec5
vig_removal is a skill published in the GitHub repository DanielTomaro13/sportsdata-agents (5 stars, last pushed 8d ago), licensed MIT. It adds 22 tokens to every session and 347 once invoked, about $0.0001 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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