race-plan

race-plan is a skill for Claude Code from seungwee-choi/oh-my-personal-best. It costs 14 tokens per session (2,088 once invoked), scanned A, original, MIT.

A tool for creating a structured marathon training plan over a defined number of weeks toward a target finish time. Marathon training is a long-distance running program that usually combines different workout types and gradual progression.

In plain words
What is it for?
Building a new plan when a runner has a marathon goal and target time, while routing injuries, existing-plan changes, and race-week requests elsewhere.
Why use it?
It gives runners a complete training cycle instead of isolated daily workouts or last-minute race advice.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the oh-my-personal-best plugin — 11 skills, 11 commands, 8 agents shipped together

Good fit Building a new plan when a runner has a marathon goal and target time, while routing injuries, existing-plan changes, and race-week requests elsewhere.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/seungwee-choi/oh-my-personal-best/race-plan
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 seungwee-choi/oh-my-personal-best --skill race-plan
Clone the repo
git clone --depth 1 https://github.com/seungwee-choi/oh-my-personal-best

Made for: Claude Code.

Or install oh-my-personal-best, the plugin that ships this one along with the rest of its 11 skills, 11 commands, 8 agents.

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 race-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/seungwee-choi/oh-my-personal-best/race-plan/github.svg)](https://agentmods.dev/skills/seungwee-choi/oh-my-personal-best/race-plan)
Your own site
<a href="https://agentmods.dev/skills/seungwee-choi/oh-my-personal-best/race-plan"><img src="https://agentmods.dev/badge/skills/seungwee-choi/oh-my-personal-best/race-plan/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.

agentmods 80×15 button for race-plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/seungwee-choi/oh-my-personal-best/race-plan"><img src="https://agentmods.dev/badge/skills/seungwee-choi/oh-my-personal-best/race-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,088 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 $0.00014 $0.02088
Opus 5.5 $0.00006 $0.00835
Sonnet 5.5 $0.00003 $0.00418
Haiku 4.5 $0.00001 $0.00209

Measured 2mo ago against content hash 5e175a43282b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

race-plan 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 2mo 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/race-plan/SKILL.md · 173 lines

How it starts

The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<Use_When>

  • The runner states a target event and finish time ("sub-3:30 full marathon in 16 weeks", "풀코스 sub-3:30 만들고 싶어", "I want to run a sub-4 marathon")
  • The runner uses a keyword trigger: "race plan", "훈련 계획", "sub-N", or any goal time expression
  • A new training cycle is starting from scratch and needs full periodization
  • The existing plan has been discarded or is outdated and a fresh plan is needed </Use_When>

<Do_Not_Use_When>

  • Only a single day's session is needed — use /pb-today (session-coach) instead
  • A plan already exists and only the current week needs adjustment — use weekly-adapt instead
  • The race is within 7 days — use race-week for the final race-day brief instead
  • The runner reports pain or injury before a plan exists — route to physio-advisor first; do not build a plan until physio-advisor issues GREEN or YELLOW clearance </Do_Not_Use_When>

Step 0 — Disambiguate when invoked with no goal + an approved plan already exists

If no goal text was given AND $OMPB_HOME/plan-state.json already exists with critic_approved: true, do NOT silently rebuild from scratch. First ask the runner which they want:

  • Adjust this week → weekly-adapt (keep the plan, tune the current week).
  • Change the goal / rebuild → continue this skill with the new goal (or confirm the existing one).
  • Just view it → render via /pb-week (this week) or /pb-report. Only proceed to a full rebuild once the runner confirms a new/changed goal.

Step 1 — Ensure Runner State Exists

Load $OMPB_HOME/runner-profile.json and $OMPB_HOME/goal.json.

Read the full file on GitHub · 173 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. 2mo ago First seen · 173 lines · 14 tokens per session scan A 5e175a43282b

Subscribe to this mod's changes

race-plan is a skill published in the GitHub repository seungwee-choi/oh-my-personal-best (3 stars, last pushed 2mo ago), licensed MIT. It adds 14 tokens to every session and 2,088 once invoked, about $0.0001 per session on Opus 5.5. 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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