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 dingyiyi0226/fantasy-baseball-mcp --skill fantasy-baseballgit clone --depth 1 https://github.com/dingyiyi0226/fantasy-baseball-mcpWrote 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/dingyiyi0226/fantasy-baseball-mcp/fantasy-baseball)<a href="https://agentmods.dev/skills/dingyiyi0226/fantasy-baseball-mcp/fantasy-baseball"><img src="https://agentmods.dev/badge/skills/dingyiyi0226/fantasy-baseball-mcp/fantasy-baseball/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/dingyiyi0226/fantasy-baseball-mcp/fantasy-baseball"><img src="https://agentmods.dev/badge/skills/dingyiyi0226/fantasy-baseball-mcp/fantasy-baseball.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 | $0.00078 | $0.01231 |
| Opus 5 | $0.00039 | $0.00616 |
| Sonnet 5 | $0.00016 | $0.00246 |
| Haiku 4.5 | $0.00008 | $0.00123 |
Grade A, and why
fantasy-baseball 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fantasy Baseball
This skill is the top-level router for the repo's Yahoo fantasy baseball review workflows. Keep the public trigger surface stable here, and move the detailed procedure for each workflow into a dedicated tool reference so we can add more tools over time without bloating this file.
Read references/browser-control.md before reading from or writing to Yahoo.
Read references/tool-notes.md before calling the public baseball-analysis tools.
Read references/subagent-delegation.md when subagents are available for a review or Yahoo action.
Available Tools
Browser Yahoo data
Use the signed-in Yahoo browser for every league-specific read:
- account, league, and team discovery
- settings, scoring categories, standings, and roster capacity
- rosters, team stats, scoreboards, and matchup history
- player search, availability, rankings, and transaction history
Load the page-family reference needed for the request:
references/browser-discovery-league.mdreferences/browser-roster-matchup.mdreferences/browser-players-transactions.md
Do not use the Yahoo Fantasy API. If the selected browser is not signed in to Yahoo, stop and ask the user to sign in there.
daily-roster-review
Use this tool for the current day-to-day roster review flow:
- matchup scoreboard vs opponent
- opponent pressure check
- start/sit recommendations with exact slot changes
- add/drop targets and streamer ideas
- lineup adjustments delegated to
adjust-lineupby default; add/drop stays manual by default
When the user asks for fantasy roster review, daily fantasy review, start/sit help, lineup moves,
waiver targets, or general team-status advice, load references/daily-roster-review.md and follow
that workflow.
weekly-review
Use this tool for a management post-mortem on the current or a just-finished scoring week:
- category outcome vs. opponent, including in-progress weeks
- move-by-move timeline of adds/drops/lineup calls, graded on process vs. result
- opponent management comparison (lineup cleanliness, streamer usage, add/drop efficiency)
- missed opportunities (IL/NA misuse, unused streams, missed saves chases)
- for an in-progress week that is currently being lost: whether a realistic comeback is still possible with the best plausible management from here, not hindsight luck
- a scorecard grading category strategy, adds/drops, daily lineup handling, and IL/NA management
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/add-drop-player.md 7.9 KB
- references/adjust-lineup.md 8.2 KB
- references/browser-control.md 23 KB
- references/browser-discovery-league.md 3.5 KB
- references/browser-players-transactions.md 3.2 KB
- references/browser-roster-matchup.md 3.5 KB
- references/daily-roster-review.md 36 KB
- references/subagent-delegation.md 9.6 KB
- references/tool-notes.md 5.2 KB
- references/weekly-review.md 12 KB
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.
- 10d ago First seen · 113 lines · 78 tokens per session scan A 0b13cf14e384
fantasy-baseball is a skill published in the GitHub repository dingyiyi0226/fantasy-baseball-mcp (0 stars, last pushed 6d ago), licensed MIT. It adds 78 tokens to every session and 1,231 once invoked, about $0.0004 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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